Zobrazeno 1 - 10
of 102
pro vyhledávání: '"Kazuyuki NAKAHATA"'
Publikováno v:
Sensors, Vol 23, Iss 1, p 150 (2022)
Guided elastic wave (GEW) transducers for structural health monitoring (SHM) can act as transmitters (senders) and receivers (sensors). Their performance in both cases depends on the structure to which they are coupled. Therefore, they must be charac
Externí odkaz:
https://doaj.org/article/5cdc8e521b36418ea8acd0b8f084e026
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 84, Iss 867, Pp 18-00192-18-00192 (2018)
Cast stainless steel (CASS) is widely used in primary coolant piping of nuclear power plants because of its high corrosion resistance and high strength. An in-service inspection based on ultrasonic testing (UT) has to be conducted for such weld joint
Externí odkaz:
https://doaj.org/article/4e06573fed414400a860a8e192235445
Autor:
Kazuyuki NAKAHATA, Takashi HORIGUCHI
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 81, Iss 832, Pp 15-00471-15-00471 (2015)
We develop a three dimensional (3-D) flaw imaging system using the full waveforms sampling and processing (FSAP) technique and an ultrasonic matrix array transducer. In FSAP, each array element is sequentially used as an emitter and all other array e
Externí odkaz:
https://doaj.org/article/c16c167e4b144b12a403bb5d685dd115
Publikováno v:
Materials Evaluation. 80:28-37
In this study, we applied the reverse time migration (RTM) method to ultrasonic defect imaging in anisotropic materials. RTM offered that the defect shape could be uniquely determined by calculating a cross correlation of the incident and the reverse
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d2a8f43fd554344c7a0f8074f24b5288
https://doi.org/10.32548/2022.me-04244
https://doi.org/10.32548/2022.me-04244
Publikováno v:
Japanese Journal of JSCE. 79
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cc5a4263bb8151b1e0420accfbbc7bf3
https://doi.org/10.2208/jscejj.22-15004
https://doi.org/10.2208/jscejj.22-15004
Publikováno v:
The Proceedings of Mechanical Engineering Congress, Japan. 2022:J041-03
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9a9e573c065093dc5e8a1b481b95206e
https://doi.org/10.1299/jsmemecj.2022.j041-03
https://doi.org/10.1299/jsmemecj.2022.j041-03
Publikováno v:
Journal of the Society of Materials Science, Japan. 69:586-592
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d6a2c907ad892f54c8065b5c1479d21
https://doi.org/10.2472/jsms.69.586
https://doi.org/10.2472/jsms.69.586
Publikováno v:
International Journal for Numerical and Analytical Methods in Geomechanics. 44:2025-2041
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a61a2edb882717815030ed97c2e023a1
https://doi.org/10.1002/nag.3117
https://doi.org/10.1002/nag.3117
Publikováno v:
Insight - Non-Destructive Testing and Condition Monitoring. 61:669-675
A simulation-aided defect reconstruction method using an ultrasonic time-reversal approach that uses elastic constants determined by ultrasonic field data is proposed. Scattered waves from a defect are recorded using an array probe on a polystyrene w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4f27519d573e8690054751078b5bb473
https://doi.org/10.1784/insi.2019.61.11.669
https://doi.org/10.1784/insi.2019.61.11.669
Publikováno v:
Insight - Non-Destructive Testing and Condition Monitoring. 61:162-165
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8aee2a9d850c8878bc0f780f667aa85a
https://doi.org/10.1784/insi.2019.61.3.162
https://doi.org/10.1784/insi.2019.61.3.162