Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Oyvind K-V. Standal"'
Autor:
Emilie Vallee, Martijn Frijlink, Tore Gruner Bjastad, Magne Aanes, Petter Norli, Oyvind K.-V. Standal, Fabrice Prieur, Ole Martin Brende
Publikováno v:
2020 IEEE International Ultrasonics Symposium (IUS).
Stress corrosion cracking (SCC) is a serious threat to gas pipelines that is challenging to detect with current in-line inspection technologies. Recently, the potential to detect SCC with Guided Ultrasonic Waves (GUW) using Halfwave's ART Scan® tool
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::498841cc1b096b4b7f5a7c01c754cb54
https://doi.org/10.1109/ius46767.2020.9251474
https://doi.org/10.1109/ius46767.2020.9251474
Autor:
Oyvind K.-V. Standal, Magne Aanes, Emilie Vallee, Ole Martin Brende, Petter Norli, Martijn Frijlink, Tore Gruner Bjastad, Fabrice Prieur
Publikováno v:
2019 IEEE International Ultrasonics Symposium (IUS).
Stress corrosion cracking (SCC) is a serious threat to gas pipelines. Current in-line inspection tools have issues with the detection and sizing of small cracks. Advances in gas-coupled broadband ultrasound enable new detection methods based on Guide
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e0801a941703cdbc7fe0e1189575046e
https://doi.org/10.1109/ultsym.2019.8925831
https://doi.org/10.1109/ultsym.2019.8925831
Autor:
Emilie Vallee, Martijn Frijlink, Magne Aanes, Oyvind K.-V. Standal, Fabrice Prieur, Henrik Duerud, Petter Norli, Tore Gruner Bjastad, Asbjørn Spilde
Publikováno v:
Proceedings of Meetings on Acoustics.
Most gas pipelines are buried and exposed to a potential corrosive soil where stress corrosion cracking (SCC) may occur. To mitigate the effect of SCC, pipeline operators perform numerous crack detection inspections of onshore pipelines. Current in-l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d64b9cfa12f0e9c92708bf5a679bc85
https://doi.org/10.1121/2.0001334
https://doi.org/10.1121/2.0001334
Autor:
Petter Norli, Fabrice Prieur, Oyvind K.-V. Standal, Emilie Vallee, Martijn Frijlink, Tore Gruner Bjastad
Publikováno v:
2018 IEEE International Ultrasonics Symposium (IUS).
Stress corrosion cracking (SCC) is a serious problem in gas pipelines. The detection of such cracks are difficult with currently available in-line inspection technologies. Recent work demonstrated the crack detection potential of using guided waves a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9932ca46093ad9b551520e91a967b529
https://doi.org/10.1109/ultsym.2018.8579864
https://doi.org/10.1109/ultsym.2018.8579864
Autor:
Oyvind K.-V. Standal, Katharina Haakenstad, Martijn Frijlink, Fabrice Prieur, Mark Tannerx, Petter Norli
Publikováno v:
2017 IEEE International Ultrasonics Symposium (IUS).
A long-standing challenge in integrity management of gas pipelines is stress corrosion cracking (SCC). Such cracks are difficult to detect, calling for sensitive detection methods with good coverage. Recent advances in gas-coupled broad band ultrasou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::512f4b946926690502d0d9e9e08dc30b
https://doi.org/10.1109/ultsym.2017.8092503
https://doi.org/10.1109/ultsym.2017.8092503
Autor:
Tonni Franke Johansen, Rune Hansen, Mercy Afadzi, Esben A. Nilssen, Svein-Erik Måsøy, Yngve Hofstad Hansen, Catharina de Lange Davies, Oyvind K.-V. Standal, Bjorn A. J. Angelsen
Publikováno v:
Ultrasound in Medicine & Biology. 38:476-486
The ultrasound exposure parameters that maximize drug release from dierucoyl-phosphatidylcholine (DEPC)-based liposomes were studied using two transducers operating at 300 kHz and 1 MHz. Fluorescent calcein was used as a model drug, and the release f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e3851d7841b58a07d62c5aa874c881fc
https://doi.org/10.1016/j.ultrasmedbio.2011.11.017
https://doi.org/10.1016/j.ultrasmedbio.2011.11.017
Autor:
Tonni F. Johansen, Svein-Erik Måsøy, Jochen Deibele, Rune Hansen, Sven Peter Näsholm, Oyvind K.-V. Standal, Bjorn A. J. Angelsen, Thor Andreas Tangen
Publikováno v:
The Journal of the Acoustical Society of America. 128:2695-2703
In this article, acoustic propagation effects of dual-frequency wide-band excitation pulses in a focused ultrasound system are demonstrated in vitro. A designed and manufactured dual-frequency band annular array capable of transmitting 0.9/7.5 MHz ce
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0f31a30b3a75bfaf6ec4384eccffa6c2
https://doi.org/10.1121/1.3488308
https://doi.org/10.1121/1.3488308
Autor:
Oyvind K.-V. Standal, B.A.J. Angelsen, Tonni F. Johansen, Svein-Erik Måsøy, P. Nasholm, Rune Hansen
Publikováno v:
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control. 55:1112-1121
A dual-band method for ultrasound contrast agent detection is demonstrated in vivo in an animal experiment using pigs. The method is named Second-order UltRasound Field Imaging, abbreviated SURF Imaging. It relies on simultaneously transmitting two u
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a5a19c4e2160e72738b6e5af7e5515fd
https://doi.org/10.1109/tuffc.2008.763
https://doi.org/10.1109/tuffc.2008.763
Autor:
Marco M. Voormolen, Ingvild Kinn Ekroll, Oyvind K-V. Standal, Jochen M. Rau, Lasse Lovstakken
Publikováno v:
IEEE transactions on ultrasonics, ferroelectrics, and frequency control. 62(9)
Coherent compounding can provide high frame rates and wide regions of interest for imaging of blood flow. However, motion will cause out-of-phase summation, potentially causing image degradation. In this work the impact of blood motion on SNR and the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7eadb961c4a599a44f2d13d52947b900
https://pubmed.ncbi.nlm.nih.gov/26415126
https://pubmed.ncbi.nlm.nih.gov/26415126
Autor:
Oyvind K.-V. Standal, Ingvild Kinn Ekroll, Marco M. Voormolen, Jochen M. Rau, Lasse Lovstakken
Publikováno v:
2014 IEEE International Ultrasonics Symposium.
The influence of blood motion on the accuracy of coherent compounding Doppler imaging is investigated. A simplified model for the compounded Doppler signal is proposed. The model is used to show that coherent compounding acts as a low pass filter, in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::972006e0cb1862c3c06186c10c03c41c
https://doi.org/10.1109/ultsym.2014.0429
https://doi.org/10.1109/ultsym.2014.0429