Per Lunde
Position
Emeriti, Professor emeritus, Physics / Acoustics
Affiliation
- per.lunde@uib.no
- Phone number
- +47 99493901
- +47 55582786
- Visitor address
-
Allégaten 55
5007 Bergen - Postal address
-
P.O. Box 7803NO-5020 BergenNorway
Per Lunde
Position
Emeriti, Professor emeritus, Physics / Acoustics
Affiliation
Research groups
Publications
Master’s thesis
- Maja Haugen Villanger; Audun Pedersen; Per Lunde et al. (2026). Guided ultrasonic waves in solid cylinders for structural health monitoring. (external link)
- António Alexandre Fraga Dias; Per Lunde (2013). Construction, modeling and characterization of a piezoelectric ultrasonic and underwater transducer. (Master thesis). (external link)
- Berg Isabel; Per Lunde; U. Peter Svensson (2021). Uncertainty estimation in sound scattering measurements within an anechoic chamber. Master thesis. (external link)
- Sverre Kongsro Finstad; Per Lunde; Mathias Myrtveit Sæther et al. (2021). Characterization and finite element modelling of piezoelectric ceramic discs vibrating in air, for a frequency range including the first two radial modes. Master thesis. (external link)
- Magnus Hammervold Eileraas; Per Lunde; Magne Vestrheim (2019). Lydhastighetsmålinger med og uten resonanseffekter i en viskoelastisk stålplate i vann. Master thesis. (external link)
- Sigrid Husebø Øygard; Per Lunde; Geir Pedersen (2018). Simulations of acoustic transmission loss of Fin whale calls reaching the LoVe Ocean Observatory. Master thesis. (external link)
- Erik Larsen; Per Lunde; Tor Arne Johansen (2020). "Scholte waves in seabed mapping". Master thesis. (external link)
- Sindre Nordlund Vatnehol; Per Lunde; Egil Ona (2012). Modellering av det spredte lydfeltet fra en rigid kule med innfallende lydfelt fra en akustisk sylinderarray (Eng.: Modelling of the sound pressure scattered from a rigid sphere, with incident sound field radiated by a cylindrical acoustic array) (Master thesis). (external link)
- Haiwa Pedersen; Per Lunde; Rolf Korneliussen et al. (2020). Måling av ekvivalent åpningsvinkel for et 38 kHz fiskeriekkolodd. Kalibrering av ekkolodd ved bruk av flere svingere. Master thesis. (external link)
- Ivar Ravndal; Per Lunde; Magne Vestrheim (2020). Normal incidence ultrasonic beam transmission through steel plates. Measuring and modelling the transmission coefficient. Master thesis. (external link)
- Mats Johan Fjellheim; Per Lunde; Jan Martin Kocbach et al. (2023). Defect detection and acoustic penetration of grout in offshore structures. Master thesis.. (external link)
- Robert Løland; Per Lunde; Audun Oppedal Pedersen et al. (2023). Triangulation method for measurement of fisheries echosounder two-way equivalent beam solid angle, 𝜓. Master thesis.. (external link)
- Henrik Fosså; Per Lunde; Knut Matre (2011). Ultrasound phantom for myocardium. (Master thesis). (external link)
- Simen Hammervold Midtbø; Per Lunde; Magne Vestrheim et al. (2018). Beam diffraction effects in guided-wave transmission of fluid embedded elastic plate. Influence of receiver distance and finite aperture. Master thesis. (external link)
- Håvard Råheim Økland; Per Lunde; Mathias Myrtveit Sæther et al. (2023). Finite element modelling, construction and experimental characterization of piezoelectric transducers for gas. Master thesis. (external link)
- Irene Dahl Isaksen; Per Lunde; Mathias Myrtveit Sæther et al. (2023). Normally incident ultrasonic beam transmission through a water-embedded steel plate as a function of ka-number. Master thesis.. (external link)
- Andreas Hagen; Per Lunde; Magne Vestrheim (2017). Ultrasonic measurement systems with diffraction correction for gas: Master thesis. (external link)
- Andre Adelsten Søvik; Per Lunde; Magne Vestrheim (2015). Ultrasonic measurement systems for gas. Finite element modelling compared with measurements in air. Master thesis. (external link)
- Espen Fosse; Per Lunde; Mathias Myrtveit Sæther et al. (2022). Finite element modeling and experimental characterization of piezoelectric ceramic disk in air. Master thesis. (external link)
- Joachim Gjesdal Kristensen; Per Lunde; Tarjei Rommetveit (2022). Measurement cell for sound speed in liquids: The 3-way pulse method. Master thesis. (external link)
- Celine Prøytz; Per Lunde; Mathias Myrtveit Sæther et al. (2022). Underwater ultrasonic transducer technology. Construction, characterization and finite-element modelling. Master thesis. (external link)
- Hannah Dyveke Skogheim Benus; Per Lunde; Tarjei Rommetveit (2022). Measurement cell for sound speed in liquids: Pulse-echo buffer rod method. Master thesis. (external link)
- Miranda Ruth Veim; Per Lunde; Tonje Nesse Forland et al. (2022). Simulation-based methods of sphere selection for calibration of broadband echosounders in fisheries acoustics. Master thesis. (external link)
- Philip Trætteberg; Per Lunde; Mathias Myrtveit Sæther et al. (2022). An analysis on material constants estimation for the low characteristic impedance piezoceramic Pz37HD using measurements and FEM modeling. Master thesis. (external link)
- Renate Grindheim; Per Lunde; Magne Vestrheim (2019). Ultrasonic measurement system for gas. Experimental and theoretical characterization using piezoelectric elements at radial mode vibration in air. Master thesis. (external link)
- Erlend Bjørndal; Magne Vestrheim; Per Lunde (1994). "Utnyttelse av resonansmodi i ultralyd transduserkonstruksjonar" (Cand. Scient. thesis). (external link)
- Lars Jordal; Erling A. Hammer; Per Lunde (1991). "Modellering av piezoelektriske krystallers vibrasjonsmoder basert på admittansmåling" (Cand. Scient. Thesis). (external link)
- Maren F. Rong; Per Lunde; Tonje Nesse Forland et al. (2022). The application of CW and FM sonar technology to detect a decrease in air in the swim bladder of Atlantic salmon, measurements and modeling. Master thesis. (external link)
- Eivind Mosland; Magne Vestrheim; Per Lunde et al. (2013). Reciprocity calibration method for ultrasonic piezoelectric transducers in air. (Master thesis). (external link)
- Rune Hauge; Per Lunde; Magne Vestrheim et al. (2013). Finite element modeling of ultrasound measurement systems for gas. Comparison with experiments in air. (Master thesis). (external link)
- Jan M. Kocbach; Magne Vestrheim; Per Lunde (1997). "Endelig element modellering av piezoelektriske skiver" (Cand. Scient. thesis). (external link)
- Kenneth Kirkeng Andersen; Per Lunde; Magne Vestrheim et al. (2015). Reciprocity calibration of ultrasonic piezoelectric disks in air. Master thesis. (external link)
- Adrian Kvist; Per Lunde; Svein Mjølsnes (2019). "Tid-frekvens-analyse av støy fra kaviterende skipspropeller". Master thesis. (external link)
- Marianne Solberg; Per Lunde; Kjell-Eivind Frøysa (2009). "Absolute sound velocity measurements in liquid using the three-way pulse method" (Master thesis). (external link)
- Per Lunde (1982). "Om parabolsk modell i ikkje-lineær akustikk" (Cand. Real. thesis). (external link)
- Kjetil Daae Lohne; Magne Vestrheim; Per Lunde (2005). "Undersøkelse og utnyttelse av svingemoder i ultralyd tranduserkonstruksjon" (Master thesis). (external link)
Academic article
- Julian David Pelaez Quinones; Steinar Bjørnstad; Peter James Thomas et al. (2026). Monitoring surface gravity wave variability with State of Polarization sensing on a subsea telecommunication cable. (external link)
- Eivind Nag Mosland; Per Lunde; Jan Martin Kocbach (2023). A spectrum-of-spectrum filtering method to extract direct and multipath arrivals from simulations and measurements. (external link)
- Lars Robert Hole; Per Lunde; Yngve T. Gjessing (1997). Effects of strong sound velocity gradients on propagation of low frequency impulse sound: Comparison of FFP predictions and experimental data. (external link)
- Jan M. Kocbach; Per Lunde; Magne Vestrheim (2001). "Resonance frequency spectra with convergence tests for piezoceramic disks using the finite element method". (external link)
- Magne Aanes; Kjetil Daae Lohne; Per Lunde et al. (2017). Beam diffraction effects in the backward wave regions of viscoelastic leaky Lamb modes for plate transmission at normal incidence. (external link)
- Rune Øyerhamn; Eivind Nag Mosland; Espen Storheim et al. (2018). Finite element modeling of ultrasound measurement systems for gas. Comparison with experiments in air. (external link)
- Per Lunde (2020). Finite‐amplitude power budget equations for acoustic fish abundance estimation. (external link)
- Per Lunde; Audun Oppedal Pedersen (2025). Criteria for Consistent Broadband Pulse Compression and Narrowband Echo Integration Operation in Fisheries Echosounder Backscattering Measurements. (external link)
- Magne Aanes; Remi André Kippersund; Kjetil Daae Lohne et al. (2017). Time-of-flight dependency on transducer separation distance in a reflective-path guided-wave ultrasonic flow meter at zero flow conditions. (external link)
- Magne Aanes; Kjetil Daae Lohne; Per Lunde et al. (2016). Finite aperture influence on energy concentration, frequency shift, and signal enhancement, for acoustic transmission in the negative group velocity region of the S1 leaky Lamb mode. (external link)
- Johannes Just Hjertaas; Henrik Fosså; Grete Lunestad Dybdahl et al. (2013). Accuracy of real-time single- and multi-beat 3-D speckle tracking echocardiography in vitro. (external link)
- Per Lunde; Rolf Korneliussen (2016). Power budget equations and calibration factors for fish abundance estimation using scientific echo sounders and sonar systems. (external link)
- Magne Aanes; Kjetil Daae Lohne; Per Lunde et al. (2016). Beam diffraction effects in sound transmission of a fluid-embedded viscoelastic plate at normal incidence. (external link)
- Mathias Myrtveit Sæther; Stian Almenningen; Geir Ersland et al. (2022). Compressional wave phase velocity measurements during hydrate growth in partially and fully water saturated sandstone. (external link)
- Audun Oppedal Pedersen; Per Lunde; Frank Tichy et al. (2022). Finite-amplitude sound propagation effects in volume backscattering measurements for fish abundance estimation. (external link)
- Eivind Nag Mosland; Per Lunde; Jan Martin Kocbach (2023). Finite element-based diffraction correction for piezoelectric transducers accounting for diffraction at transmission, propagation, and reception. (external link)
- Mathias Myrtveit Sæther; Simen Hammervold Midtbø; Per Lunde (2022). Interaction of three-dimensional acoustic beam with fluid-loaded solid plate: Axial near- to far-field transmission at normal beam incidence. (external link)
- Magne Aanes; Kjetil Daae Lohne; Per Lunde et al. (2015). Transducer beam diffraction effects in sound transmission near leaky Lamb modes in elastic plates at normal incidence. (external link)
- Gry Debora Wisthus Eveborn; Henrik Schirmer; Geir Heggelund et al. (2013). The Evolving Epidemiology of Valvular Aortic Stenosis. The Tromsø Study. (external link)
- Eivind Nag Mosland; Per Lunde; Jan Martin Kocbach (2025). Comparison of measured and finite element-based diffraction correction (FEDC) for ultrasonic measurement systems in a gaseous medium. (external link)
- Magne Aanes; Kjetil Daae Lohne; Per Lunde et al. (2012). Ultrasonic beam transmission through a water-immersed plate at oblique incidence using a piezoelectric source transducer. Finite element - angular spectrum modeling and measurements. (external link)
- Per Lunde (2015). Equations describing finite-amplitude effects in acoustic fish abundance estimation. (external link)
- Anders Hallanger; Kjell-Eivind Frøysa; Per Lunde (2002). "CFD simulation and installation effects for ultrasonic flow meters in pipes with bends". (external link)
- Eivind Nag Mosland; Per Lunde; Jan Martin Kocbach (2024). Diffraction correction in high-precision pulse-echo and multiple-reflection ultrasonic measurement systems for fluids. (external link)
Conference lecture
- Wang Wei; Per Lunde; Audun Oppedal Pedersen (2026). Nearfield effects of large-aperture sources on a fluid-loaded solid plate at normal incidence. (external link)
- Per Lunde; Eivind Nag Mosland; Jan Martin Kocbach et al. (2025). Diffraction correction for piezoelectric transducers in precision ultrasonic measurement systems. (external link)
- Audun Oppedal Pedersen; Per Lunde; Frank E. Tichy et al. (2026). Nonlinear Sound Propagation in Echosounder Measurements – Sensitivity to Seawater Parameters. (external link)
- Audun Oppedal Pedersen; Per Lunde; Rolf Korneliussen et al. (2009). "Nonlinear sound propagation fisheries research echo" sounders (abstract). (external link)
- Skule Smørgrav; Atle k. Abrahamsen; Per Lunde et al. (2006). "Developments in transducer technology and reciprocity in ultrasonic flow meters". (external link)
- Per Lunde; Rolf Korneliussen (2015). A unifying theory explaining different formulations of power budget equations and calibration factors commonly used for fish abundance estimation. (external link)
- Per Lunde; Kjell-Eivind Frøysa; Trond Folkestad (2007). "Pressure and temperature effects for Ormen Lange ultrasonic gas flow meters". (external link)
- Mathias Myrtveit Sæther; Per Lunde (2023). “Contributions from the backward- and forward-wave bands to ultrasonic beam transmission for a fluid-embedded steel plate”. (external link)
- Mathias Myrtveit Sæther; Per Lunde (2022). "Ultrasonic beam transmission in the backward and forward-wave frequency-wavenumber bands of a fluid-embedded steel plate", Proc. 2022 IEEE International Ultrasonics Symposium, Venice, Italy, 10-13 October 2022, 4 p.. (external link)
- Magne Aanes; Kjetil Daae Lohne; Per Lunde et al. (2018). Transmission through an isotropic viscoelastic water-coupled plate using a transmit-receive transducer system. (external link)
- Skule Smørgrav; Atle k. Abrahamsen; Per Lunde et al. (2007). Developments in transducer technology and reciprocity in ultrasonic flow meters. (external link)
- Sigrid Husebø Øygard; Geir Pedersen; Per Lunde (2019). Simulations of acoustic transmission loss of Fin whale calls reaching the LoVe Ocean Observatory. (external link)
- Mathias Sæther; Per Lunde; Stian Almenningen et al. (2019). Acoustic laboratory measurements of hydrate-bearing Bentheim sandstones. (external link)
- Renate Grindheim; Per Lunde; Magne Vestrheim (2019). Characterization of ultrasound transmit-receive measurement systems in air. Comparison with prior work on piezoelectric elements in radial mode vibration. (external link)
- Simen Hammervold Midtbø; Magne Aanes; Per Lunde et al. (2018). Comparison of angular spectrum models for baffled piston sound field with finite receiver apertures. (external link)
- Mathias Sæther; Per Lunde; Stian Almenningen et al. (2019). Elastic wave velocities under methane hydrate growth in Bentheim sandstone. (external link)
- Per Lunde; Kjell-Eivind Frøysa; Svein Neumann et al. (2008). "Handbook of uncertainty calculations, - Ultrasonic fiscal oil metering stations". (external link)
- Remi andré Kippersund; Jan M. Kocbach; Per Lunde (2008). "Simulation of guided waves in a fluid loaded elastic plate". (external link)
- Kjetil Daae Lohne; Magne Vestrheim; Per Lunde (2008). "Ultrasonic signal transmission in plates. Study of a steel plate immersed in water". (external link)
- Jochen Deibele; Jan M. Kocbach; Per Lunde et al. (2008). "Transdusere for SURF avbildning". (external link)
- Per Lunde; Kjell-Eivind Frøysa (2008). "Pressure and temperature effects for Ormen Lange ultrasonic gas flow meters, - Results from a follow-up study". (external link)
- Per Lunde; Magne Vestrheim (1995). "Modelling of loss effects in piezoceramic materials, and adaptation to measurements on radial and thickness modes in thin disks". (external link)
- Per Lunde (1995). "Radial modes in thick, circular, isotropic and piezoceramic disks". (external link)
- Per Lunde (1994). "On the modelling of causal wave propagation in viscoelastic solids". (external link)
- Per Lunde (1993). "On the modelling of wave propagation in piezoelectric ceramic transducers". (external link)
- Andrew C. Baker; Per Lunde (1999). “Effects of deposits on the performance of ultrasonic gas transducers”. (external link)
- Hilde Furset; Per Lunde; Magne Vestrheim et al. (1999). “Investigation of acoustic properties in wet gas for ultrasonic flowmetering”. (external link)
- Kjell-Eivind Frøysa; Per Lunde (1999). “Comparison of simulation models for ultrasonic propagation in wet gas”. (external link)
- Jan M. Kocbach; Per Lunde; Magne Vestrheim et al. (1998). “Piezoelectric disks with a front layer. Comparisons of FEM with experimental data”. (external link)
- Magne Aanes; Kjetil Daae Lohne; Per Lunde et al. (2012). "Normal incidence ultrasonic beam transmission through a water-immersed plate using a piezoelectric source transducer. Finite element modeling, angular spectrum method and measurements". (external link)
- Simen Eldevik; Åge A. Olsen; Per Lunde (2012). Sound velocity change owing to the acousto-elastic / plastic effects in steel measured using Acoustic Resonance Technology (ART). (external link)
- Jan M. Kocbach; Per Lunde; Magne Vestrheim (1997). "FEM analysis of piezoelectric disks - Method and testing". (external link)
- Per Lunde; Kjell-Eivind Frøysa (1997). "Influence of piezoelectric transducer response on transit time determination using cross-correlation of chirp signals". (external link)
- Per Lunde (2003). "Subsea multipath ultrasonic liquid flow meter". (external link)
- Eivind Nag Mosland; Jan Martin Kocbach; Per Lunde (2022). Errors using the spatially averaged free-field pressure approximation for description of the receiving properties of piezoelectric transducers. (external link)
- Panagiotis Papathanasiou; Per Lunde; Michal Bezdek et al. (2020). 3D simulation of ultrasonic flowmeters using a hybrid FEM-FVM method. (external link)
- Audun Oppedal Pedersen; Magne Vestrheim; Per Lunde (2005). Consequences of non-linear sound propagation on target strength measurements - preliminary studies. (external link)
- Rune Hauge; Eivind Mosland; Espen Storheim et al. (2014). Updated results on finite element modeling of a transmit-receive ultrasound measurement system. Comparison with experiments in air. (external link)
- Mathias Sæther; Simen Hammervold Midtbø; Per Lunde et al. (2020). Nearfield effects from leaky Lamb modes in a steel plate for normal beam incidence. (external link)
- Marianne Solberg; Magne Aanes; Per Lunde et al. (2020). Complex dispersion properties of Lamb modes vs. Poisson’s ratio. (external link)
- Audun Oppedal Pedersen; Per Lunde; Magne Vestrheim (2005). "Nonlinear effects in fisheries and research echo sounders and sonars". (external link)
- Petter Norli; Per Lunde; Magne Vestrheim (2005). "Investigation of precision sound velocity measurements as reference for ultrasonic gas flow meters". (external link)
- Eivind Nag Mosland; Per Lunde; Jan Martin Kocbach (2023). Using spectrum-of-spectrum (SoS) filtering to extract direct and multipath arrivals from a frequency domain simulation. Comparison with cepstrum and time-gating methods. (external link)
- Eivind Mosland; Per Lunde; Jan Martin Kocbach (2023). Near-field diffraction and reception effects in finite element modeling of ultrasound measurement systems for gas. Comparison to measurements in air. (external link)
- Remi andré Kippersund; Per Lunde; Kjell-Eivind Frøysa (2009). "Deposit detection using plate waves". (external link)
- Kjetil Daae Lohne; Per Lunde; Magne Vestrheim (2011). Ultrasonic beam interactions with a fluid-immersed steel plate at normal and oblique incidence. Measurement results and comparisons with an angular spectrum method in frequency and time-domains. (external link)
- Remi andré Kippersund; Per Lunde; Kjell-Eivind Frøysa (2011). Hydrate deposit detection in pipes using ultrasonic guided waves. (external link)
- Espen Storheim; Per Lunde; Magne Vestrheim (2011). Diffraction correction in ultrasonic fields for measurements of sound velocity in gas. Conventional and alternative methods. (external link)
- Jan Martin Kocbach; Remi andré Kippersund; Per Lunde (2010). "Time domain finite element modeling of SH-mode propagation in elastic plates with deposits". (external link)
- Espen Storheim; Magne Aanes; Magne Vestrheim et al. (2010). "Ultrasonic piezoceramic transducers for air, - finite element analysis and measurements". (external link)
- Magne Aanes; Kjetil Daae Lohne; Per Lunde et al. (2011). Finite element analysis of acoustic beam interactions with a plate at normal incidence. Comparison with a 3D angular spectrum method and measurements. (external link)
- Magne Vestrheim; Per Lunde; Paul Meldahl (1988). "High resolution shallow seismic surveying using parametric acoustic source technology". (external link)
- Magne Vestrheim; Per Lunde (1988). "Signalbehandling i parametriske antenner". (external link)
- Magne Vestrheim; Per Lunde (1987). "Utvikling av akustiske transdusere for gass-strømmåling". (external link)
- Per Lunde; Magne Vestrheim (1987). "Full bølgje FFP simulering for seismisk gasslommedeteksjon". (external link)
- Per Lunde; Magne Vestrheim (1986). "Tredimensjonal FFP modellering av elastiske bølgjer i horisontalt stratifiserte media". (external link)
- Per Lunde (1985). "Acoustic transmission line analysis of formants in hyperbaric helium speech". (external link)
- Per Lunde; Magne Vestrheim; Reidar Bø (1990). "Aspects of transducer modelling". (external link)
- Per Lunde; Magne Vestrheim; Asle Lygre (1989). "Ultrasonic pulse propagation in stratified multiphase media". (external link)
- Per Lunde; Magne Vestrheim (1989). "The interaction of seismic waves with shallow gas structures". (external link)
- Per Lunde; Magne Vestrheim (1988). "Full wave simulation of multilayer reflection coefficients in shallow seismics". (external link)
- Eivind Nag Mosland; Espen Storheim; Per Lunde et al. (2021). Diffraction correction for precision measurements of sound velocity in gas. Is full receiver modelling needed?. (external link)
- Per Lunde; Paul Meldahl; Magne Vestrheim (1987). "Full wave elastic modelling for seismic detection of shallow gas". (external link)
- Asle Lygre; Magne Vestrheim; Per Lunde et al. (1987). "Numerical simulation of ultrasonic flowmeters". (external link)
- Per Lunde (1991). "Interference effects in sound fields transmitted at fluid-fluid and fluid-solid interfaces". (external link)
- Asle Lygre; Magne Vestrheim; Per Lunde et al. (1988). "Numerical simulation of ultrasonic flowmeters". (external link)
- Per Lunde; Hans B. Helle; J. Pajchel (1992). "Comparison of full-wave and ray-tracing synthetic seismograms with emphasis on thin-layer resolution". (external link)
- Espen Storheim; Per Lunde; Magne Vestrheim (2017). Sound field radiation from a non-uniformly vibrating baffled and circular piezoelectric ceramic disk in radial mode vibration. (external link)
- Eivind Mosland; Rune Hauge; Espen Storheim et al. (2013). "Reciprocity calibration method for ultrasonic piezoelectric transducers in air”. (external link)
- Rune Hauge; Eivind Mosland; Espen Storheim et al. (2013). "Finite element modeling of ultrasound measurement systems for gas. System model compared to measurements”. (external link)
- Magne Aanes; Kjetil Daae Lohne; Per Lunde et al. (2012). "Ultrasonic beam transmission through a water-immersed plate at oblique incidence using a piezoelectric source transducer. Finite element - angular spectrum modeling and measurements”. (external link)
- Espen Storheim; Rune Hauge; Eivind Mosland et al. (2013). "Finite element modeling of ultrasound measurement systems for gas. Use of a full receiver description in comparison with spherical reciprocity”. (external link)
- Magne Aanes; Per Lunde; Magne Vestrheim (2013). "Interaction of a transducer excited ultrasonic beam with an elastic plate. 3D modeling in comparison with experiments”. (external link)
- Per Lunde; Magne Vestrheim; Espen Storheim et al. (2013). "Industrial ultrasound research at UiB/IFT. From gas flow measurement to structural monitoring". (external link)
- Kjell-Eivind Frøysa; Per Lunde (2001). "A ray theory approach to investigate the influence of flow velocity profiles on transit times in ultrasonic flow meters for gas and liquid". (external link)
- Andrew C. Baker; Kjell-Eivind Frøysa; Hilde Furset et al. (2001). "Ultrasonic scattering from liquid droplets in wet gas". (external link)
- Per Lunde (1987). "FFP-modelling of seismic / elastic waves in horizontally stratified geologies". (external link)
- Per Lunde (1987). "Modelling of acoustic transducers". (external link)
- Viktor Berge; Asle Lygre; Per Lunde et al. (1987). "Simuleringsverktøy for ultralyd væske og gasstrømningsmåling". (external link)
- Magne Vestrheim; Per Lunde (1988). "Parametrisk lydkilde. Optimalisering". (external link)
- Kjell-Eivind Frøysa; Anders Hallanger; Per Lunde (2007). "Fiskalmåling av olje med høy vannfraksjon. Sensitivitetsstudie for en turbinmeter-basert målestasjon". (external link)
- Per Lunde; Magne Vestrheim; Reidar Bø et al. (2007). "Reciprocal operation of ultrasonic flow meters: Criteria and applications". (external link)
- Per Lunde; Kjell-Eivind Frøysa (2007). "Trykk- og temperatur-effekter for Ormen Lange ultralyd gassmålere". (external link)
- Per Lunde; Petter Norli; Magne Vestrheim et al. (2007). "Precision sound velocity cell as reference for gas quality measurement in ultrasonic flow meters. Preliminary results using two candidate methods with argon at low pressure". (external link)
- Magne Vestrheim; Per Lunde; Rune Fardal (2002). "Endelig element modellering av piezoelektriske transduser vibrasjoner". (external link)
- Kjell-Eivind Frøysa; Per Lunde; Gaute Øverås Lied et al. (2007). "Natural gas quality measurement using ultrasonic flow meters. Development of a prototype Gas Analyzer with results from testing on North Sea gas field data". (external link)
- Per Lunde; Magne Vestrheim (1994). "Comparison of models for radial and thickness modes in piezoceramic disks". (external link)
- Jan M. Kocbach; Per Lunde; Magne Vestrheim (1999). "FE simulations of piezoceramic disks with a front layer of varying thickness". (external link)
- Per Lunde; Kjell-Eivind Frøysa; Magne Vestrheim (2000). "Challenges for improved accuracy and traceability in ultrasonic fiscal flow metering". (external link)
- Kjell-Eivind Frøysa; Per Lunde; Reidar Sakariassen et al. (1996). "Operation of multipath ultrasonic gas flow meters in noisy environments". (external link)
- Jan M. Kocbach; Per Lunde; Magne Vestrheim (2000). "Finite element modeling of piezoceramic disks including radiation into a fluid medium". (external link)
- Per Lunde; Kjell-Eivind Frøysa; Jon B. Fossdal et al. (1999). "Functional enhancements within ultrasonic gas flow measurement". (external link)
- Audun Oppedal Pedersen; Per Lunde; Rolf Korneliussen et al. (2008). "Nonlinear sound propagation fisheries research echo sounders". (external link)
- Per Lunde; Kjell-Eivind Frøysa; Magne Vestrheim (2000). "Challenges for improved accuracy and traceability in ultrasonic fiscal flow metering of natural gas". (external link)
- Per Lunde (1984). "Formantanalyse av hyperbar heliumtale". (external link)
- Per Lunde (1984). "Unscrambling of speech in a hyperbaric helium oxygen atmosphere". (external link)
- Per Lunde; Kjell Inge Dalland (1984). "Det matematiske og fysiske grunnlaget for datamaskinell taleprosessering". (external link)
- Per Lunde (1986). "The influence of diving masks on the formant spectrum of normal speech and helium speech". (external link)
- Magne Vestrheim; Per Lunde (1987). "Simulering av full-bølge lydforplantning i marin seismikk". (external link)
- Andrzej Hanyga; Hans B. Helle; Per Lunde et al. (1991). "Seismic wave simulation in exploration and production". (external link)
- Magne Vestrheim; Per Lunde (1989). "Pulse generation using a parametric source". (external link)
- Per Lunde; Remi André Kippersund; Magne Vestrheim et al. (2005). "Finite element modeling of sound propagation from a piezoelectric transducer through an elastic layer". (external link)
- Petter Norli; Per Lunde (2006). "A three-way pulse method for a precision sound velocity measurement cell". (external link)
- Kjell-Eivind Frøysa; Per Lunde (2006). "Mass and energy measurement of natural gas using ultrasonic flow meters. Results from testing on various North Sea gas field data". (external link)
- Skule Smørgrav; Atle k. Abrahamsen; Per Lunde et al. (2006). "Developments in transducer technology and reciprocity in ultrasonic flow meters". (external link)
- Kjell-Eivind Frøysa; Per Lunde; Anfinn Paulsen et al. (2006). "Density and calorific value measurement of natural gas using ultrasonic flow meters. Results from testing on various North Sea gas field data". (external link)
- Mathias Sæther; Per Lunde (2015). "Sound velocity measurement method for porous sandstone. Discussion and prelimirary results”. (external link)
- Magne Aanes; Kjetil Daae Lohne; Espen Storheim et al. (2015). "Beam transmission of water-embedded steel plate at normal incidence. Diffraction effects in the S1 to A3 region”. (external link)
- Per Lunde; Magne Vestrheim; Reidar Bø (2006). "Reciprocity in electroacoustic measurement systems, and reciprocal operation: Principles and applications to ultrasonic flow metering". (external link)
- Raymond j. Kalivoda; Per Lunde (2006). "Liquid ultrasonic meters for crude oil measurement". (external link)
- Per Lunde; Hans B. Helle; Jan Pajchel (1992). "A comparison of full-wave and ray-tracing seismograms with emphasis on thin-layer resolution". (external link)
- Andre Adelsten Søvik; Kenneth Kirkeng Andersen; Per Lunde et al. (2015). "Characterization of ultrasound transmit-receive measurement systems in air. Comparison of finite element modelling and experimental measurements". (external link)
- Kenneth Kirkeng Andersen; Andre Adelsten Søvik; Per Lunde et al. (2015). "Reciprocity calibration method for ultrasonic piezoelectric transducers in air. Comparison of finite element modelling and experimental measurements". (external link)
- Per Lunde; Audun Oppedal Pedersen (2015). "Volume backscattering of finite-amplitude acoustic waves: Power flow, sampled volume, and scattering cross section". (external link)
- Per Lunde (1988). "Årsaker til heliumtaleforvrenging". (external link)
- Kjell-Eivind Frøysa; Espen Storheim; Remi andré Kippersund et al. (2013). Axial sound field from a non-uniformly vibrating circular sound source mounted in a rigid baffle. (external link)
- Rune Hauge; Eivind Mosland; Espen Storheim et al. (2013). Finite element modelling of ultrasound measurement systems for gas. Comparison with experiments in air. (external link)
- Magne Aanes; Kjetil Daae Lohne; Per Lunde et al. (2017). Dispersion properties of Lamb and leaky Lamb modes in elastic and viscoelastic plates. (external link)
- Per Lunde; Kjell-Eivind Frøysa; Remi andré Kippersund et al. (2003). "Transient diffraction effects in ultrasonic meters for volumetric, mass and energy flow measurement of natural gas". (external link)
- Per Lunde; Remi andré Kippersund; Magne Vestrheim et al. (2004). "Transient diffraction effects in piezoelectric ultrasonic transducers using finite element modelling". (external link)
- Per Lunde; Kjell-Eivind Frøysa (2002). "Handbook of uncertainty calculations. Ultrasonic fiscal gas metering stations". (external link)
- Per Lunde; Kjell-Eivind Frøysa (2002). "Mass and energy measurement of gas using ultrasonic flow meters". (external link)
- Per Lunde; Kjell-Eivind Frøysa; Magne Vestrheim (2003). "Transient diffraction effects in ultrasonic flow meters for gas and liquid". (external link)
- Per Lunde; Kjell-Eivind Frøysa; Svein Neumann et al. (2002). "Handbook of uncertainty calculations. Ultrasonic fiscal gas metering stations". (external link)
- Remi andré Kippersund; Per Lunde; Magne Vestrheim (2004). "Finite element modelling of piezoelectric ultrasonic transducer properties in natural gas". (external link)
- Petter Norli; Per Lunde; Magne Vestrheim (2004). "Methods for precision sound velocity measurements in pressure cells for gas characterization". (external link)
- Per Lunde; Kjell-Eivind Frøysa; Gaute Øverås Lied et al. (2010). Handbook of uncertainty calculations, - Fiscal oil metering systems based on ultrasonic duty and master meters. (external link)
- Eivind O. Dahl; Kjell-Eivind Frøysa; Per Lunde (2003). "Handbook of uncertainty calculations. Fiscal orifice gas and turbine oil metering stations". (external link)
- Per Lunde; Remi andré Kippersund; Magne Vestrheim (2003). "Signal modelling using the FLOSIM system model in ultrasonic instrumentation for industrial applications". (external link)
- Mathias Myrtveit Sæther; Per Lunde; Magne Vestrheim (2021). Ultrasonic beam radiation from piston source through water-immersed steel plate using ASM. Pressure-to-pressure transfer function and numerical challenges. (external link)
- Marianne Solberg; Magne Aanes; Per Lunde et al. (2021). Complex dispersion properties of lossy and leaky Lamb modes related to Poisson's ratio. (external link)
- Eivind Nag Mosland; Jan Martin Kocbach; Espen Storheim et al. (2022). Radiation in air from a piezoelectric ceramic disk in radial mode vibration. Contributions from front, side and rear surfaces. (external link)
- Magne Aanes; Per Lunde; Magne Vestrheim (2013). Ultrasonic beam transmission through a steel plate at oblique incidence: Uniform piston vs. piezoelectric transducer. (external link)
- Eivind Mosland; Rune Hauge; Espen Storheim et al. (2013). Reciprocity calibration method for ultrasonic, piezoelectric transducers in air, including finite element simulations. (external link)
- Per Lunde; Kjell-Eivind Frøysa; Skule Smørgrav (2010). "Challenges and technology trends in fiscal metering of natural gas including measurement of CO2 emission". (external link)
- Magne Aanes; Espen Storheim; Magne Vestrheim et al. (2010). "Finite element analysis and measurement of ultrasonic piezoceramic transducers in air and water". (external link)
- Kjetil Daae Lohne; Magne Aanes; Per Lunde et al. (2017). Finite aperture effects in the backward wave propagation region of a leaky Lamb mode at normal beam incidence. (external link)
- Kjell-Eivind Frøysa; Per Lunde; Magne Vestrheim (2001). "A ray theory approach to investigate the influence of flow velocity profiles on transit times in ultrasonic flow meters for gas and liquid". (external link)
- Anders Hallanger; Kjell-Eivind Frøysa; Per Lunde (2001). "CFD simulation and installation effects for ultrasonic flow meters in pipes with bends". (external link)
- Kjell-Eivind Frøysa; Per Lunde (2004). "Mass and energy measurement of natural gas using ultrasonic flow meters. Recent results". (external link)
- Audun Oppedal Pedersen; Per Lunde; Magne Vestrheim (2004). "Convergence and accuracy of the Bergen Code for investigating nonlinear effects in fishery echo sounders". (external link)
- Marianne Solberg; Per Lunde; Magne Vestrheim (2022). Energy-flux density in real-, imaginary-, and complex-valued branches of Lamb modes in an isotropic plate. (external link)
- Mathias Myrtveit Sæther; Per Lunde; Magne Vestrheim (2022). Ultrasonic beam transmission through a water-immersed steel plate in the vicinity of the ZGV angle. (external link)
- Wang Wei; Audun Oppedal Pedersen; Per Lunde (2025). Interaction of sound beams with fluidloaded solid plate at normal incidence: Influence of piston 𝒌𝒂 numbers. (external link)
- Remi andré Kippersund; Per Lunde; Kjell-Eivind Frøysa (2010). "Measurement of fluid viscosity in pipes using multimode ultrasonic guided wave attenuation". (external link)
- Per Lunde (2010). "Challenges of ultrasonic quantum measurement of natural gas". (external link)
- Per Lunde (2015). Equations describing finite-amplitude effects in acoustic fish abundance estimation. (external link)
- Mathias Myrtveit Sæther; Jan Martin Kocbach; Per Lunde (2024). Transducers for gas measurement in the lower hundred kHz frequency range. (external link)
- Espen Storheim; Per Lunde; Magne Vestrheim (2017). Vibration of a baffled piezoelectric ceramic circular disk in lower radial modes, with near- and farfield sound radiation. (external link)
- Per Lunde; Audun Oppedal Pedersen (2012). Sonar and power budget equations for backscattering of finite amplitude sound waves, with implications in fishery acoustics for abundance estimation of marine resources. (external link)
- Kjell-Eivind Frøysa; Per Lunde (2005). "Density and calorific value measurement in natural gas using ultrasonic flow meters". (external link)
- Kjetil Daae Lohne; Magne Vestrheim; Per Lunde (2005). "Electrical and acoustical response of of a Pz27 piezoelectric ceramic element in air. Finite element analyses and experimental results". (external link)
- Per Lunde; Magne Vestrheim; Reidar Bø et al. (2005). "Reciprocity and its utilization in ultrasonic flow meters". (external link)
- Mathias Sæther; Per Lunde; Geir Ersland (2016). Sound velocity measurement method for porous sandstone. Measurements, finite element modelling, and diffraction correction. (external link)
- Kenneth Kirkeng Andersen; Per Lunde; Jan Martin Kocbach (2016). Reciprocity calibration method for ultrasonic piezoelectric transducers in air. Comparison of finite element modelling and experimental measurements. (external link)
- Magne Aanes; Kjetil Daae Lohne; Per Lunde et al. (2016). Transducer finite aperture effects in sound transmission near leaky Lamb modes in elastic plates at normal incidence. (external link)
- Audun Oppedal Pedersen; Magne Vestrheim; Per Lunde (2005). "Nonlinear sound propagation effects in fisheries research echo sounders - Measurements and simulations in fresh water". (external link)
- Raymond j. Kalivoda; Per Lunde (2005). "Liquid ultrasonic meters for crude oil measurement". (external link)
- Frank Tichy; H. Solli; H. Klaveness et al. (2005). "Nonlinear effects in a 200 kHz sound beam". (external link)
- Audun Oppedal Pedersen; Magne Vestrheim; Per Lunde (2005). "Quantification of nonlinear sound propagation effects in fisheries research echo sounders". (external link)
Doctoral thesis (PhD)
- Panagiotis Papathanasiou; Per Lunde; Michal Bezdek et al. (2023). A Hybrid Numerical Method for 3D Multiphysics Modeling of Ultrasonic Transit-Time Flowmeters : Including Sound Propagation in Real Pipe Flows. (external link)
- Simen Eldevik; Per Lunde (2014). Measurement of non-linear acoustoelastic effect in steel using acoustic resonance (PhD thesis). (external link)
- Per Lunde (1987). Analysis and unscrambling of hyperbaric helium speech. (external link)
- Magne Aanes; Per Lunde; Magne Vestrheim (2014). Interaction of piezoelectric transducer excited ultrasonic pulsed beams with a fluid-embedded viscoelastic plate. Finite element modeling, angular spectrum modeling and measurements (PhD thesis). (external link)
- Espen Storheim; Per Lunde; Magne Vestrheim (2015). Diffraction effects in the ultrasonic field of transmitting and receiving circular piezoceramic disks in radial mode vibration. FE modelling and comparison with measurements in air. (external link)
- Jan Kocbach; Per Lunde; Magne Vestrheim (2000). Finite Element Modeling of Ultrasonic Piezoelectric Transducers. Influence of geometry and material parameters on vibration, response functions and radiated field. (external link)
- Petter Norli; Magne Vestrheim; Per Lunde (2007). "Sound velocity cell for gas characterization" (PhD thesis). (external link)
- Mathias Sæther; Per Lunde; Geir Ersland (2018). Elastic wave velocities and attenuation under methane hydrate growth in Bentheim sandstone - Measurements and modelling. PhD Thesis. (external link)
- Audun Pedersen; Magne Vestrheim; Per Lunde (2006). "Effects of nonlinear sound propagation in fisheries research" (PhD thesis). (external link)
- Per Lunde; Magne Vestrheim; Jan Martin Kocbach (2000). "Finite element modelling of ultrasonic piezoelectric transducers. Influence of geometry and material parameters on vibration response functions and radiated field" (Dr. Scient. thesis). (external link)
- Per Lunde (1986). "Analysis and unscrambling of hyperbaric helium speech. Part I and II" (Dr. Philos. thesis). (external link)
Research report
- Per Lunde; Audun Oppedal Pedersen; Rolf Korneliussen et al. (2013). Power-budget and echo-integrator equations for fish abundance estimation. (external link)
- Andrew C. Baker; Per Lunde (2001). "Nonlinear propagation from circular echo-sounder transducers. Numerical simulation results". (external link)
- Anders Hallanger; Per Lunde (2001). "Sluttrapport. SIP - Gassteknologi 1997-2000". (external link)
- Jan M. Kocbach; Per Lunde; Magne Vestrheim (2000). "Tables of resonance frequencies for disks of PZT-5A, PZT-5H, Pb(ZrTi)O3 and PbTiO3". (external link)
- Jan M. Kocbach; Per Lunde; Magne Vestrheim (1999). "FEMP - Finite element modeling of piezoelectric structures. Theory and verification for piezoceramic disks". (external link)
- Per Lunde (2001). "Wet gas flow metering using multipath transit time flow meters. Sensitivity study". (external link)
- Andrew C. Baker; Morten I. Andersen; Kjell-Eivind Frøysa et al. (2001). "Ultrasound transmission in wet gas. Scattering from mist droplets and measurement of pipe wall film thickness". (external link)
- Andrew C. Baker; Morten I. Andersen; Per Lunde (2001). "Ultrasound transmission in wet gas. Transducer technology". (external link)
- Andrew C. Baker; Kjell-Eivind Frøysa; Hilde Furset et al. (2001). "Ultrasound transmission in wet gas. Effects of liquid mist and transducer deposits on sound speed and attenuation". (external link)
- Jan M. Kocbach; Per Lunde; Remi andré Kippersund et al. (2008). "INDSURF project. 3D finite element simulations for a dual frequency band piezocomposite transducer using FEMP". (external link)
- Vidar Knappskog; Per Lunde; Remi andré Kippersund (2008). "Fluenta FGM 130 piezoelectric ultrasonic transducers. Finite element simulations using FEMP". (external link)
- Per Lunde (1994). "Piezoelectric transducer modelling. Radial and thickness modes in poled ferroelectric ceramic disks". (external link)
- Per Lunde; Magne Vestrheim; Reidar Bø et al. (1993). "FMU 700 - Fiskal måler ultralyd. Akustiske transdusere". (external link)
- Per Lunde; Magne Vestrheim (1988). "Full wave simulation of multilayer reflection coefficients in shallow seismics" (Expanded version of paper given at XI Scandinavian Cooperation Meeting in Acoustics / Hydrodynamics, Ustaoset, January 31 - February 3, 1988). (external link)
- Asle Lygre; Per Lunde; Reidar Bø et al. (1988). "High precision ultrasonic flowmeter. Sensitivity study. Volume II". (external link)
- Per Lunde (1990). "Modellering av seismisk respons i samband med tynn-lags-problematikk i Nordsjøen. Bruk av fullbølgjemodellen CAPROS". (external link)
- Magne Vestrheim; Per Lunde (1990). "Shallow seismics using parametric acoustic sources". (external link)
- Magne Vestrheim; Asle Lygre; Reidar Bø et al. (1986). "High precision ultrasonic gas flowmeters. Feasibility study". (external link)
- Knut Andersen; Kjell Inge Dalland; Per Lunde (1983). "Communication evaluation during a 350 msw operational dive". (external link)
- Per Lunde (1986). "Sound propagation from a seismic source array", Lecture series given at the University of Bergen, Dept. of Mathematics, May 1986 (Compilation of viewgraphs). (external link)
- Per Lunde (1983). "Software documentation of the NUTEC experimental unscrambler". (external link)
- Per Lunde; Kjell-Eivind Frøysa; Øyvind Nesse et al. (1996). "Wet gas flow metering. Ultrasonic transit time methods. Basic studies. TOP - Online monitoring of oil and gas processes". (external link)
- Asle Lygre; Hans Ingebrigtsen; Reidar Bø et al. (1993). "FMU 700 - Fiskal måler ultralyd. Konstruksjonsunderlag". (external link)
- Øyvind Nesse; Per Lunde (1993). "Separator instrumentation. Preliminary study of ultrasonic interface detection through a separator steel wall. TOP - Online monitoring of oil and gas processes". (external link)
- Per Lunde; Magne Vestrheim (1986). "Simuleringsprogrammet CAPROS Versjon 1.0. Programvaredokumentasjon". (external link)
- Per Lunde (1985). "Helium speech unscrambling". (external link)
- Per Lunde; Kjell-Eivind Frøysa; Magne Vestrheim (1995). "FMUSIK - Version 1.0. Uncertainty model for the 6-path FMU 700 ultrasonic gas flow meter". (external link)
- Per Lunde (1995). "FMU 700 - Fiskal måler ultralyd. Akustiske transdusere, Serie 03". (external link)
- Per Lunde; Magne Vestrheim (1991). "Piezoelectric transducer modelling. Thickness mode vibration". (external link)
- Per Lunde; Magne Vestrheim (1991). "Piezoelectric transducer modelling. Part 1: Basic equations for poled ferroelectric ceramics". (external link)
- Per Lunde; Øyvind Nesse (1995). "Wet gas measurement. Ultrasonic transducer for thickness measurement of liquid film. TOP - Online monitoring of oil and gas processes". (external link)
- Per Lunde (1989). "CAPROS version 2.0. Full wave elastic modelling for shallow gas identification". (external link)
- Magne Vestrheim; Reidar Bø; Per Lunde et al. (1989). "Aluminium elektrolysecelle. Ultralydmålinger av sjikttykkelser. Forprosjekt". (external link)
- Asle Lygre; Jannicke Hilland; Kjell-Eivind Frøysa et al. (1994). "Plandokument 1994. TOP - Strategisk teknologiprogram. Online monitoring of oil and gas processes". (external link)
- Per Lunde (1991). "Modellering av seismisk respons i samband med tynn-lags-problematikk i Nordsjøen. Del II". (external link)
- Magne Vestrheim; Per Lunde (1988). "Shallow gas detection with a parametric seismic source. Phase I: Feasibility study. Part 1". (external link)
- Asle Lygre; Per Lunde; Reidar Bø et al. (1988). "High precision ultrasonic flowmeter. Sensitivity study. Volume I". (external link)
- Per Lunde; Magne Vestrheim; Reidar Bø et al. (1991). "Presisjons ultralyd gass-strømningsmåler. Del 2 - Utvikling og konstruksjon. Design av akustiske transdusere i en flerstråle ultralyd gasstrømningsmåler. Arbeidsrapport nr. 2. Vol. I og II". (external link)
- Per Lunde; Magne Vestrheim (1986). "Simuleringsprogrammet CAPROS Versjon 1.0. Brukarinstruksjon". (external link)
- Per Lunde; Magne Vestrheim (1986). "Lydforplantning fra seismisk kildearray. Simuleringsmodellen CAPROS". (external link)
- Jan Åke Lundblad; Kjell Inge Dalland; Knut Andersen et al. (1985). "OTP diver communication project Obtained results and further development". (external link)
- J. Jakobsen; Robert Palmstrøm; Per Lunde et al. (1989). "Permanent multilayer well monitoring. A study of a down-hole instrumentation system for oil and gas production wells". (external link)
- Magne Vestrheim; Per Lunde (1989). "Presisjons ultralyd gass-strømningsmåler. Del 2 - Utvikling og konstruksjon. Rammespesifikasjoner for akustiske transdusere i en flerstråle ultralyd gasstrømningsmåler. Teknisk notat nr. 2.1". (external link)
- Asle Lygre; Per Lunde; Kjell-Eivind Frøysa (1995). "Present status and future research on multi-path ultrasonic gas flow meters". GERG Technical Monograph, TM-8. (external link)
- Per Lunde; Magne Vestrheim (1992). "FGM 100 fakkelgasssmålar. Verknad av gassparametrar på ultralyd signaltransmisjon". (external link)
- Magne Vestrheim; Per Lunde (1989). "Shallow gas detection with a parametric seismic source. Phase 1: Feasibility study. Part 2: Technological basis for realization". (external link)
- Magne Vestrheim; Reidar Bø; Per Lunde et al. (1990). "Aluminium elektrolysecelle. Ultralydmåling av sjikttykkelser. Akustisk transmisjon i flytende kryolitt". (external link)
- Asle Lygre; Per Lunde (1990). "FGM 100 transdusere - Vurdering av direktivitet. Arbeidsnotat". (external link)
- Asle Lygre; Per Lunde; Kjell-Eivind Frøysa (1995). "GERG Project on ultrasonic flow meters". (external link)
- Magne Vestrheim; Per Lunde (1989). "Presisjons ultralyd gass-strømningsmåler. Del 2 - Utvikling og konstruksjon. Numeriske simuleringer av akustiske transdusere for en flerstråle ultralyd gasstrømningsmåler. Teknisk notat nr. 2.2". (external link)
- Per Lunde; Paul Meldahl; Magne Vestrheim (1987). "Full wave elastic modelling for seismic detection of shallow gas". (Expanded version of paper given at 49th Meeting and Technical Exhibition for the European Association of Exploration Geophysicists (EAEG'87), Belgrade, Yugoslavia, June 9-12, 1987). (external link)
- Per Lunde; Magne Vestrheim (1995). "Modelling of loss effects in piezoceramic materials, and adaptation to measurements on radial and thickness modes in thin disks" (Expanded version of paper given at 15th International Congress on Acoustics (ICA '95), Trondheim, Norway, 26-30 June, 1995, Newman, M. (ed.), Volume I, pp. 381-384). (external link)
- Per Lunde; Rolf Korneliussen (2014). A unifying theory explaining different power budget formulations used in modern scientific echosounders for fish abundance estimation. (external link)
- Per Lunde; Kjell-Eivind Frøysa (2010). "Ormen Lange ultrasonic gas flow meters. A study for establishment of corrections for pressure and temperature effects. Phase 2". (external link)
- Jan M. Kocbach; Per Lunde; Magne Vestrheim et al. (2007). "INDSURF project. Comparison of finite element (FE) and plane wave (Mason) types of simulations for a dual frequency band piezocomposite transducer". (external link)
- Per Lunde; Kjell-Eivind Frøysa (2007). "Ormen Lange ultrasonic gas flow meters. A study for establishment of corrections for pressure and temperature effects". (external link)
- Andrew C. Baker; Per Lunde (2002). "Nonlinear effects in sound propagation from echo-sounders used in fish abundance estimation. Numerical simulation results". (external link)
- Anders Hallanger; Kjell-Eivind Frøysa; Per Lunde (2007). "Fiscal measurement of oil with high water fraction. Phase 1: Sensitivity study for a turbine meter based fiscal metering station". (external link)
- Kjell-Eivind Frøysa; Per Lunde (2001). "MPU 600 3-stråle USM. Integrasjonsmetodar for fleirstråle ultralyd strøymingsmåling i våtgass. Teoretisk studie". (external link)
- Remi andré Kippersund; Per Lunde (2007). "INDSURF project. Dual frequency gas transducer. Preliminary FEMP simulations". (external link)
- Jan M. Kocbach; Per Lunde; Magne Vestrheim et al. (2006). "Finite element modelling of ultrasonic piezoelectric transducers. Extension of FEMP to 3D analysis". (external link)
- Per Lunde; Eivind O. Dahl; Einar Halvorsen (2006). "National strategy for R&D on oil and gas flow measurement technology. A comparison of Norwegian and UK funding systems". (external link)
- Jan M. Kocbach; Per Lunde; Remi andré Kippersund et al. (2007). "INDSURF project. 3D finite element simulations for a dual frequency band piezocomposite transducer using FEMP". (external link)
- Kjell-Eivind Frøysa; Per Lunde (2002). "Multipath ultrasonic liquid flow meter. Integration method for the 6-path prototype. Basis for implementation". (external link)
- Per Lunde; Remi andré Kippersund; Stig Heggstad et al. (2004). "Multipath ultrasonic liquid flow meter. Ultrasonic transducers for prototype light oil flow meter (Phase 2A). Production procedures". (external link)
- Per Lunde; Magne Vestrheim (2007). "Final report for the 2005-06 UoB-CMR "såkorn" project "3D finite element modelling (FEM) of precision non-wetted ultrasonic fiscal flow meters for oil and gas"". (external link)
- Per Lunde; Kjell-Eivind Frøysa; Magne Vestrheim et al. (2004). "Ultrasonic technology for improved exploitation of petroleum resources. A Strategic Institute Programme (SIP). Status Report 2003". (external link)
- Per Lunde; Morten I. Andersen; Magne Vestrheim (1997). "EUCLID RTP 10.8 - Smart sonar array. Piezoelectric buzzer for a self calibrating hydrophone system. Work specifications - Rev. 1". (external link)
- Per Lunde; Kjell-Eivind Frøysa; Magne Vestrheim (1997). "GARUSO - Version 1.0. Uncertainty model for multipath ultrasonic transit time gas flow meters". (external link)
- Øyvind Isaksen; Per Lunde; Kjell-Eivind Frøysa et al. (1997). "On-line overvåking av olje- og gassprosesser. Vedlegg til NFR sluttrapport (NFR/100986/420)". (external link)
- Kjell-Eivind Frøysa; Per Lunde (1998). ”VESUM - Version 1.0. Uncertainty model for velocity of sound measurements for the 6-path FMU 700 ultrasonic gas flow meter". (external link)
- Per Lunde; Reidar Bø; Morten I. Andersen et al. (1999). “GERG project on ultrasonic flow meters. Phase II - Transducer testing. Part 1: Measurement methods. Part 2: KOS transducers. Part 3: Daniel transducers". (external link)
- Morten I. Andersen; Per Lunde; Michel Gaeta (1999). “EUCLID RTP 10.8: Smart Sonar Array. Wet-end demonstrator. User’s Manual”. (external link)
- Morten I. Andersen; Per Lunde; Michel Gaeta (1999). “EUCLID RTP 10.8: Smart Sonar Array. Wet-end demonstrator. Test report”. (external link)
- Per Lunde; Morten I. Andersen; Magne Vestrheim (1997). "EUCLID RTP 10.8 - Smart sonar array. Piezoelectric buzzer for a self calibrating hydrophone system. Work specifications - Rev. 2". (external link)
- Asle Lygre; Per Lunde; Øyvind Isaksen (1997). "Wet gas metering. Flow conditions and metering techniques". (external link)
- Kjell-Eivind Frøysa; Anders Hallanger; Per Lunde (1998). “K-factor of the Fluenta FGM 100 flare gas meter for the "Laminaria and Corallina development" project”. (external link)
- Per Lunde; Magne Vestrheim (1998). “Precision sound velocity cell for natural gas at high pressures. Phase 1 - Feasibility study”. (external link)
- Kjell-Eivind Frøysa; Anders Hallanger; Per Lunde (1998). “K-factor of the Fluenta FGM 100 flare gas meter for the "Valhall/Hod modification" project”. (external link)
- Siri Granum Carson; Elisabet Haugsbø; Martin Ludvigsen et al. (2021). Blått kompass. Stø kurs mot bærekraft i norske havnæringer. Kapittel 6: Visjonen om det digitale havet – fra et hav av data til bærekraftig ressursforvaltning. (external link)
- Kjell-Eivind Frøysa; Per Lunde; Gaute Øverås Lied (2015). Handbook of uncertainty calculations for ultrasonic oil flow metering stations. Documentation of uncertainty models and internet tool. (external link)
Lecture
- Per Lunde (2009). "Bergen Acoustics – Quo vadis?". (external link)
- Per Lunde (2009). "Acoustics in the Bergen region". (external link)
- Per Lunde (2020). Acoustics - Sensing the invisible. (external link)
- Ivar Ravndal; Per Lunde; Magne Vestrheim (2020). Thickness resonances and dispersion properties of leaky Lamb modes in a steel plate. (external link)
- Per Lunde (2011). Acoustics, some perspectives. (external link)
- Per Lunde (2020). SFI Smart Ocean - Flexible and cost-effective monitoring for management of a productive and healthy ocean. (external link)
- Christian Brekken; Magnus Hjelstuen; Ivar Eskerud Smith et al. (2024). Water-Break in Oil Wells, Controlled & Labelled DAS data with Acoustic Reference Measurements. (external link)
- Ehsan Hossein Zadeh Khezri; Per Lunde; Peter James Thomas et al. (2024). Propagation of flow noise in multilayered oil pipeline systems subject to water and gas injection. (external link)
- Per Lunde (2004). "Bruk av ultralyd til nye måleprosessar". (external link)
Conference poster
- Cato Bjelland; Per Lunde; Remi andré Kippersund (2005). "Making downhole sensors available at high temperatures". (external link)
- Audun Oppedal Pedersen; Magne Vestrheim; Per Lunde (2005). Ikkelineær lydforplantning ved bruk av ekkolodd i firskeriforvaltning. (external link)
- Petter Norli; Per Lunde; Magne Vestrheim (2005). "Investigation of precision sound velocity measurement methods as reference for ultrasonic gas flow meters". (external link)
- Espen Storheim; Per Lunde; Magne Vestrheim (2011). Diffraction correction for precision measurements of sound velocity in gas. Use of an alternative method for non-uniform piezoelectric transmitting transducer vibration (Poster). (external link)
- Kjell-Eivind Frøysa; Per Lunde (2005). "Integration methods in ultrasonic flow meters for gas and liquid". (external link)
- Simen Eldevik; Fabrice Jean Gabriel Prieur; Per Lunde (2013). Measuring stress-state of gas pipelines (Poster presentation). (external link)
Media interview
Conference abstract
- Johannes Just Hjertaas; Henrik Fosså; Grete Lunestad Dybdahl et al. (2011). Accuracy of real-time single and multi beat 3D speckle tracking echocardiography in vitro. (external link)
- Geir Heggelund; knut Rasmussen; Per Lunde et al. (2010). Prognostic significance of mitral flow derived Doppler indices in a general population with normal systolic function: A prospective population-based chort study. The Tromso Study 1994-2009. (external link)