HTEK201 "Measurement Technology"

HTEK202 "Laboratory Course in Measurement Technology and Instrumentation"

HTEK102 "Practical Training in Ocean Technology"

2024

• Stavland, Stian Husevik; Tjugum, Stein-Arild; Hallanger, Anders et al. (2024). Characterization of multiphase flow through Venturi nozzle using gamma-ray tomography. (external link)

2023

• Kvamme, Juli Grønaas; Lande-Sudall, David; Hjertaker, Bjørn Tore (2023). Eksperimentell og numerisk sammenligning av ikke-lineære fokuserte bølger. (external link)
• Eriksen, Thomas; Bartl, Jan Michael Simon; Hjertaker, Bjørn Tore (2023). Flow measurements in the wake of multirotor wind turbine arrangements. (external link)
• Rafetinirinarisoa, Johanna Diamondra; Lande-Sudall, David; Hansen, Thomas Henrik Hertzfelder et al. (2023). Aerodynamisk nedskalering av en 20 MW vindturbin. (external link)
• Tolleifsen, Sondre; Lande-Sudall, David; Hjertaker, Bjørn Tore (2023). Eksperimentell undersøkelse med modellturbin under konstant slep og bølgebelastning. (external link)
• Bindingsbø, Oliver Trygve; Singh, Maneesh; Hjertaker, Bjørn Tore et al. (2023). Fault detection of a wind turbine generator bearing using interpretable machine learning. (external link)
• Voldsund, Oskar; Møller, Ments Tore; Ong, Muk Chen et al. (2023). Estimation and Verification of Hydrodynamic Parameters of an ROV using CFD. (external link)
• Ullestad, Oskar Ask; Liu, Zhenhui; Hjertaker, Bjørn Tore (2023). A comparative study on the free vibration characteristics of submerged pipe structures. (external link)
• Lunde, Ørjan; Bartl, Jan Michael Simon; Hjertaker, Bjørn Tore (2023). Yaw misalignment of a passively yawed floating multirotor wind turbine. (external link)
• Dolve, Erling Calvert; Bikass, Saeed; Momeni, Hassan et al. (2023). Investigating Wave Loads and Energy of a Spherical Object Using Numerical and Experimental Methods. (external link)

2022

• Arellano Prieto, Yessica Alexandra; Stavland, Stian Husevik; Chavez Panduro, Elvia Anabela et al. (2022). Imaging measurement technologies for CCS. (external link)

2021

• Johansen, Geir Anton; Hjertaker, Bjørn Tore; Hashemi, Reza et al. (2021). Tomographic gamma-ray imaging of industrial processes and equipment. (external link)
• Spelay, Ryan; Hashemi, Reza; Sanders, Sean et al. (2021). Improved scatter correction model for high attenuation gamma-ray tomography measurements. (external link)
• Hashemi, Reza; Spelay, Ryan; Sanders, Sean et al. (2021). A novel method to improve Electrical Resistance Tomography measurements on slurries containing clays. (external link)

2020

• Nyland, Joakim; Impelluso, Thomas; Hjertaker, Bjørn Tore (2020). Implementation of hydrodynamic forces into the Moving Frame Method for analysis of multi-body wave energy converters. (external link)
• Stavland, Stian Husevik; Arellano Prieto, Yessica Alexandra; Hunt, Andy et al. (2020). Multimodal analysis of gas-oil intermittent structures in co-current horizontal flow. (external link)
• Stavland, Stian Husevik; Arellano Prieto, Yessica Alexandra; Hunt, Andy et al. (2020). Multimodal Two-Phase Flow Measurement Using Dual Plane ECT and GRT. (external link)

2019

• Moe, Otto Andreas; Balakin, Boris; Hjertaker, Bjørn Tore (2019). Digital twin of a hydraulic accumulator for virtual detection of subsea leaks. (external link)
• Høyven, Thomas Skinlo; Lande-Sudall, David; Hjertaker, Bjørn Tore (2019). Bending moments and collision loads between a floating offshore wind turbine and a supporting barge.. (external link)
• Riple, Håkon Lerøy; Lande-Sudall, David; Thuestad, Thore Clifford et al. (2019). Dynamisk analyse og levetidsberegning på utviklingsprosjektet «Havliljen». (external link)
• Alsaker, Erik Wangen; Rytír, Martin; Hjertaker, Bjørn Tore (2019). Kvantifisering av troposfæriske effecter i satellittkommunikasjon ved bruk av numeriske værprodukter. (external link)
• Glesnes, Odd Marius Stubbe; Stenfelt, Gloria; Hjertaker, Bjørn Tore et al. (2019). The dynamic behavior of a closed fish farm. (external link)
• Haugsdal, Rene; Birkeland, Olav; Sagevik, Stian Scisly et al. (2019). MRI compatible miniature motor system: Proof of Concept. (external link)
• Stavland, Stian Husevik; Sætre, Camilla; Hjertaker, Bjørn Tore et al. (2019). Gas fraction measurements using single and dual beam gamma-densitometry for two phase gas-liquid pipe flow. (external link)

2018

• Hjertaker, Bjørn Tore; Tjugum, Stein-Arild; Hallanger, Anders et al. (2018). Characterization of multiphase flow blind-T mixing using high speed gamma-ray tomometry. (external link)
• Spjeld, Cato; Hjertaker, Bjørn Tore; Frøysa, Kjell Eivind (2018). Identifikasjon av undervannsobjekter ved bruk av ultralyd. (external link)
• Stavland, Stian Husevik; Tjugum, Stein-Arild; Hallanger, Anders et al. (2018). Investigation of Venturi constriction characteristics in multiphase flow using high speed gamma-ray tomography. (external link)
• Spelay, Ryan; Hashemi, Reza; Sanders, Sean et al. (2018). Improved backscatter correction model for high attenuation gamma-ray tomography measurements. (external link)
• Hashemi, Reza; Spelay, Ryan; Sanders, Sean et al. (2018). Comparison of Different Tomography Method Measurements on Clay Based Slurry Pipeline Systems. (external link)
• Peterson, Andreas Soto; Hjertaker, Bjørn Tore; Folgerø, Kjetil (2018). Combined thickness and permittivity measurement of layers using an open-ended coaxial probe. (external link)

2017

• Silgjerd, Ørjan; Hjertaker, Bjørn Tore; Erga, Svein Rune et al. (2017). Videreutvikling av instrumentering for studier av mikroalgers vertikalmigrasjon under ulike lysforhold. (external link)
• Frette, Kristian; Hjertaker, Bjørn Tore; Hamre, Børge (2017). Optisk goniometer for optimalisering av retningsbestemt solenergi. (external link)
• Johansen, Geir Anton; Sætre, Camilla; Tjugum, Stein-Arild et al. (2017). Tomographic methods for multiphase flow measurement. (external link)
• Melo, Silvio; Meric, Ilker; Silva, Fabiano et al. (2017). A Geometric Approach to Spectral Analysis. (external link)

2016

• Bahareh, Nikparvar; Hjertaker, Bjørn Tore; Folgerø, Kjetil (2016). Estimation of Relative Permittivity and Thickness for Dielectric Materials Using an Open-Ended Waveguide Sensor. (external link)
• Tjugum, Stein-Arild; Hjertaker, Bjørn Tore; Maad, Rachid et al. (2016). Investigation of Multiphase Flow-Regimes After a Blind-T Mixer and at the Throat of the Venturi – Using Gamma-Ray Tomography and CFD Modelling. (external link)
• Maad, Rachid; Tjugum, Stein-Arild; Hallanger, Anders et al. (2016). Investigation of multiphase flow blind-T mixing effectiveness using high speed gamma-ray tomometry. (external link)
• Grimsbø, Endre; Nortvedt, Ragnar; Hjertaker, Bjørn Tore et al. (2016). Optimal AC frequency range for electro-stunning of Atlantic salmon (Salmo salar). (external link)
• Bruvik, Erik Magnus; Hjertaker, Bjørn Tore (2016). Liquid characterization and measurement of fluid properties for reduced uncertainty in multiphase flow area fraction measurements. (external link)

2015

• Naustdal, Sigve; Hjertaker, Bjørn Tore; Hallanger, Anders et al. (2015). A study of the Coriolis flowmeter as a reference instrument in multiphase flow. (external link)
• Li, Mang; Hjertaker, Bjørn Tore; Folgerø, Kjetil (2015). Near Surface Petrochemical Sensing Using Coplanar Waveguides. (external link)

2014

• Preclíková, Jana; Kozak, Martin; Fregenal, Daniel et al. (2014). Coherent control of superposition of atomic Rydberg states with femtosecond laser pulses. (external link)
• Johansen, Geir Anton; Meric, Ilker; Maad, Rachid et al. (2014). Non-destructive monitoring of multiphase hydrocarbon flow by high-speed gamma-ray tomography. (external link)

2013

• Holm, Vårin Renate Andvik; Hjertaker, Bjørn Tore; Bruvik, Erik Magnus (2013). Detection of CO2 in N2 and H2O using photoacoustics. (external link)
• Fotland, Sindre; Hjertaker, Bjørn Tore; Frette, Øyvind et al. (2013). Instrumentering av eksperimentell vannkolonne for studier av mikroalgers vertikalforflytning. (external link)
• Bayati, Zahra; Hjertaker, Bjørn Tore; Folgerø, Kjetil (2013). Hydrate Monitoring using Capacitive Sensors. (external link)
• Preclíková, Jana; Kozak, Martin; Fregenal, Daniel et al. (2013). Quantum coherent interactions of Rydberg atoms with controlled sequences of femtosecond laser pulses. (external link)
• Thorn, Richard; Johansen, Geir Anton; Hjertaker, Bjørn Tore (2013). Three-phase flow measurement in the petroleum industry. (external link)

2012

• Sivertsen, Lasse; Hjertaker, Bjørn Tore; Kjenner, Tom Erik et al. (2012). Condition monitoring of subsea electrical equipment using motor current signature analysis. (external link)
• Precliková, Jana; Waheed, Abdul; Fregenal, Daniel et al. (2012). Unidentified transitions in one-photon intrashell dynamics in Rydberg atoms. (external link)
• Precliková, Jana; Fregenal, Daniel; Hjertaker, Bjørn Tore et al. (2012). Creation of Rydberg wavepackets with femtosecond laser pulses. (external link)
• Haarr, Kristian Frafjord; Hjertaker, Bjørn Tore; Kolstø, Stein Dankert (2012). Development of laboratory exercises in instrumentation and process control. (external link)
• Gjermundrød, Åsmund Nedrelid; Hjertaker, Bjørn Tore; Hallanger, Anders (2012). Måling av vann i olje/vann-strømning, metoder og usikkerhet. (external link)
• Karimi, Mahsa; Hjertaker, Bjørn Tore; Folgerø, Kjetil (2012). Permittivity measurements using dual open ended coaxial probes. (external link)
• Waheed, Abdul; Fregenal, Daniel; Frette, Øyvind et al. (2012). Suppression of multiphoton intrashell resonances in Li Rydberg atoms. (external link)
• Melo, Silvio; Moreira, Icaro; Dantas, Carlos et al. (2012). The particle system iterative reconstruction technique in a high speed gamma-ray tomograph. (external link)
• Bruvik, Erik Magnus; Hjertaker, Bjørn Tore; Folgerø, Kjetil et al. (2012). Monitoring oil-water mixture separation by time domain reflectometry. (external link)
• Hjertaker, Bjørn Tore; Maad, Rachid; Johansen, Geir Anton (2012). Inherent dual mode single energy gamma-ray tomography. (external link)
• Johansen, Geir Anton; Hjertaker, Bjørn Tore; Tjugum, Stein Arild et al. (2012). Industrial applications of tomographic gamma-ray methods. (external link)
• Preclíková, Jana; Kozak, Mariusz; Fregenal, Daniel et al. (2012). Excitation of Rydberg wave packets with chirped laser pulses. (external link)

2011

• Waheed, Abdul; Fregenal, Daniel; Frette, Øyvind et al. (2011). Suppression of multiphoton intrashell resonances in Li Rydberg atoms. (external link)
• Waheed, Abdul; Fregenal, Daniel; Frette, Øyvind et al. (2011). Suppression of multiphoton intrashell resonances in Li Rydberg atoms. (external link)
• Hjertaker, Bjørn Tore; Maad, Rachid; Johansen, Geir Anton (2011). Dual-mode capacitance and gamma-ray tomography using the Landweber reconstruction algorithm. (external link)
• Haukalid, Kjetil; Hjertaker, Bjørn Tore; Folgerø, Kjetil (2011). Den coplanare bølgelederen som permittivitetssensor. (external link)
• Sivertsen, Lasse; Hjertaker, Bjørn Tore; Kjenner, Tom Erik et al. (2011). Tilstandsovervåkning av frekvensdriftede motorer med lange forsyningskabler ved bruk av motorstrøm signaturanalyse. (external link)

2010

• Bruvik, Erik Magnus; Hjertaker, Bjørn Tore; Hallanger, Anders (2010). Gamma-ray tomography applied to hydro-carbon multi-phase sampling and slip measurements. (external link)
• Hoff, Dag Arne Lihaug; Hoff, DAL; Gregersen, Hans et al. (2010). Patients with functional chest pain have an increased oesophageal wall tone during bag distension. (external link)
• Hoff, Dag Arne Lihaug; Gregersen, Hans; Ødegaard, Svein et al. (2010). Sensation evoked by esophageal distension in functional chest pain patients depends on mechanical stress rather than on ischemia. (external link)
• Stjernberg, Stian; Hjertaker, Bjørn Tore; Sivertsen, Lasse (2010). Tilstandsovervåkning av undervanns motordrift med lange forsyningskabler. (external link)
• Hjertaker, Bjørn Tore; Maad, Rachid; Johansen, Geir Anton (2010). Static characterization of dual mode capacitance and gamma-ray tomography using the Landweber reconstruction algorithm. (external link)
• Maad, Rachid; Hjertaker, Bjørn Tore; Johansen, Geir Anton et al. (2010). Dynamic characterization of a high speed gamma-ray tomograph. (external link)
• Kjenner, Tom Erik; Hjertaker, Bjørn Tore; Sivertsen, Lasse (2010). Tilstandsovervåkning av frekvensstyrt undervannsmotordrift ved strømanalyse. (external link)
• Maad, Rachid; Hjertaker, Bjørn Tore; Johansen, Geir Anton et al. (2010). Dynamic characterization of a high speed gamma-ray tomograph. (external link)
• Waheed, Abdul; Fregenal, Daniel; Frette, Øyvind et al. (2010). Intra-shell RF-resonances in Li Rydberg atoms. (external link)
• Johansen, Geir Anton; Hampel, Uwe; Hjertaker, Bjørn Tore (2010). Flow imaging by high speed transmission tomography. (external link)
• Nilssen, Inge Berg; Gregersen, Hans; Ødegaard, Svein et al. (2010). In patients with functional chest pain, sensation elicited during oesophageal bag distension is mechanical rather than ischemic in origin. (external link)
• Hoff, Dag Arne Lihaug; Gregersen, Hans; Ødegaard, Svein et al. (2010). Patients with functional chest pain have a higher wall tone during bag distention. (external link)

2009

• Bruvik, Erik Magnus; Hjertaker, Bjørn Tore (2009). Characterization of on-line fluid sampling using gamma-ray tomography. (external link)
• Bruvik, Erik Magnus; Holstad, Marie Bueie; Spilde, Jarle et al. (2009). Fluid characterisation in a subsea on-line multiphase fluid sampling and analysis system. (external link)
• Meyer, Sigrid Katharina; Hjertaker, Bjørn Tore; Bruvik, Erik Magnus (2009). Måling av permittivitet og væskenivå i et testkammer for hydrokarbon væske ved hjelp av Time Domain Reflectometry (TDR). (external link)
• Soldal, Eivind Lyng; Hjertaker, Bjørn Tore (2009). Elektrisk og akustisk monitorering og diagnostisering av undervannspumpe. (external link)

2008

• Olsen, Karl Kristian; Hjertaker, Bjørn Tore (2008). Automatisering og optimalisering av fortrengningseksperimenter i oppsprukne reservoarbergarter. (external link)
• Bøe, Yngve; Hjertaker, Bjørn Tore; Brix, Ole (2008). Measurements and simulations of electrical conductivity in live fish. (external link)
• Steffensen, Pål; Hjertaker, Bjørn Tore (2008). Mulitiparametrisk monitorering av spiserøret og programutvikling for biomekaniske studier av organet. (external link)
• Maad, Rachid; Hjertaker, Bjørn Tore; Johansen, Geir Anton (2008). Semi-empirical scatter correction model for high-speed gamma-ray tomography. (external link)
• Hjertaker, Bjørn Tore; Maad, Rachid; Schuster, Erik et al. (2008). A data acquisition and control system for high-speed gamma-ray tomography. (external link)
• Johansen, Geir Anton; Hampel, Uwe; Hjertaker, Bjørn Tore (2008). Flow imaging by high speed transmission tomography. (external link)
• Hjertaker, Bjørn Tore; Johansen, Geir Anton (2008). High speed gamma-ray tomography for hydrocarbon flow applications. (external link)
• Bruvik, Erik Magnus; Baker, Andrew; Bjelland, Cato et al. (2008). A novel subsea on-line multiphase fluid sampling and analysis system. (external link)
• Schuster, Erik; Hjertaker, Bjørn Tore (2008). Datainnsamlingskontroller for høyhastighets-gammastråletomograf basert på USB- og Ethernet-grensesnitt. (external link)

2007

• Maad, Rachid; Hjertaker, Bjørn Tore; Johansen, Geir Anton (2007). Semi-empirical scatter correction models for high speed gamma-ray tomography. (external link)
• Hjertaker, Bjørn Tore; Maad, Rachid; Johansen, Geir Anton (2007). USB-based data acquisition and control system for high speed gamma-ray tomography. (external link)
• Hjertaker, Bjørn Tore; Maad, Rachid; Almås, Ole Andreas et al. (2007). USB-based Data Acquisition and Control System for High Speed Gamma-ray Tomography. (external link)
• Baker, Andrew C.; Bjelland, Cato; Spilde, Jarle et al. (2007). A Novel Subsea On-line Multiphase Fluid Sampling and Analysis System. (external link)
• Maad, Rachid; Hjertaker, Bjørn Tore; Johansen, Geir Anton (2007). Semi-empirical Scatter Correction Models for High-Speed Gamma-Ray Tomography. (external link)
• Stangborli, Erik Johan; Hjertaker, Bjørn Tore (2007). Acquisition and synchronization of sensor data for mulitiparametric imaging in gastroenterological studies. (external link)
• Vasdal, André; Hjertaker, Bjørn Tore (2007). High frequency magnetic field sensor for measurement of oil/water fractions. (external link)
• Grimsbø, Endre; Hjertaker, Bjørn Tore; Brix, Ole (2007). Instrumentation of swim tunnels and conductivity measurement of fish. (external link)

2006

• Fimreite, Anne Lise; Hjertaker, Bjørn Tore (2006). Sammenlignende studie av mastergradsveiledning ved to institutt. (external link)
• Hjertaker, Bjørn Tore (2006). Midtveiseksamen basert på flervalgsoppgaver ved Institutt for fysikk og teknologi, Universitetet i Bergen. (external link)

See a complete overview of publications in Cristin.