Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Francisco Hernandez-Valle"'
Autor:
Steve Dixon, Francisco Hernandez-Valle
Publikováno v:
Insight - Non-Destructive Testing and Condition Monitoring. 53:96-99
Typically, permanent magnets are used in electromagnetic acoustic transducer (EMAT) design. Their use at high temperatures without active cooling is restricted because of their relatively low maximum operating temperature. Presented here is an altern
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d82999379552e7ada9d98571a88d3743
https://doi.org/10.1784/insi.2011.53.2.96
https://doi.org/10.1784/insi.2011.53.2.96
Autor:
Steve Dixon, Francisco Hernandez-Valle
Publikováno v:
NDT & E International. 43:171-175
Preliminary results obtained at a range of temperatures using a pulsed electromagnet Electromagnetic Acoustic Transducer (EMAT) show that this alternative approach overcomes the limitation of permanent magnets due to their relatively low maximum oper
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cc254cfac19b9ba4f9223cfdb8157f31
https://doi.org/10.1016/j.ndteint.2009.10.009
https://doi.org/10.1016/j.ndteint.2009.10.009
Publikováno v:
AIP Conference Proceedings
It is well known that surface-breaking defects can be characterised using ultrasonic surface waves. The transmitted amplitude of the waves in the region of a defect is related to the frequency content of the wave, the sample thickness, and the defect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::44745ba55691c436954eedc6167f6f93
https://doi.org/10.1063/1.4914750
https://doi.org/10.1063/1.4914750
Publikováno v:
NDT & E International
Surface-breaking defects often have a geometry which is more complicated than the ‘normal slot’ used in many calibration tests, and this geometry will affect the reflection and transmission of ultrasonic surface waves incident on the defect. We p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7fae24b106b36f6d1a58bb9b217861e4
Publikováno v:
AIP Conference Proceedings
Rayleigh waves can be used for characterisation of surface-breaking defects, giving a measure of the depth and the angle of propagation of a defect with simple (i.e. single crack) geometry. However, surface breaking defects will often grow with a mor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c8ac63115015d83d2811e2dc6ea82956
https://doi.org/10.1063/1.4864846
https://doi.org/10.1063/1.4864846
Publikováno v:
Corrosion Science
In this work a method is presented for detecting and locating stress corrosion cracking (SCC) in stainless steel pipe samples. The method combines laser generation and either laser or electromagnetic acoustic transducer (EMAT) detection, scanning the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::572a426ee5c66dacca9f0c74e6b11967
Publikováno v:
AIP Conference Proceedings
The enhancement of surface waves in the near-field of a defect has been reported by several authors. It has been demonstrated that the interaction between the incident Rayleigh wave with the reflected Rayleigh wave, plus the mode-converted surface sk
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::68d55ff817b506e493fae3e0ee3f2465