Zobrazeno 1 - 10
of 133
pro vyhledávání: '"Jean-Pierre Monchalin"'
Autor:
Daniel Lévesque, James A. Smith, Clark Scott, Jean-Pierre Monchalin, Jeffrey M. Lacy, Bradley Benefiel, Martin Lord
As part of the U.S. High Performance Research Reactor program, a laser shock test system is being developed by the Idaho National Laboratory (INL) to characterize interface strength in innovative plate fuel for research reactors around the world. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a9dff15c98cdc1300330802ccbc120a5
https://nrc-publications.canada.ca/eng/view/object/?id=d15ead2b-0741-4102-bdbf-f02718e0335e
https://nrc-publications.canada.ca/eng/view/object/?id=d15ead2b-0741-4102-bdbf-f02718e0335e
Autor:
M. Lord, H. Hatanaka, Jean-Pierre Monchalin, M. Tagami, C. Bescond, Daniel Lévesque, Y. Asaumi
The detection of defects in thick butt joints in the early phase of multi-pass arc welding would be very valuable to reduce cost and time in the necessity of reworking. As a non-contact method, the laser-ultrasonic technique (LUT) has the potential f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e0b100bef3f47077e273938f2d7e51c6
https://doi.org/10.1016/j.ultras.2016.04.001
https://doi.org/10.1016/j.ultras.2016.04.001
Publikováno v:
AIP Conference Proceedings.
The US National Nuclear Security Agency has a Global Threat Reduction Initiative (GTRI) with the goal of reducing the worldwide use of high-enriched uranium (HEU). A salient component of that initiative is the conversion of research reactors from HEU
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f4ab8d6c26526dbe365a279a3d30b57b
https://doi.org/10.1063/1.4940537
https://doi.org/10.1063/1.4940537
Publikováno v:
Biomedical Optics Express
The detection of ultrasound in photoacoustic tomography (PAT) and ultrasonography (US) usually relies on ultrasonic transducers in contact with the biological tissue. This is a major drawback for important potential applications such as surgery and s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a5809f88b1b4878c4ad435f5dae83655
http://europepmc.org/articles/PMC3255333
http://europepmc.org/articles/PMC3255333
Publikováno v:
Insight - Non-Destructive Testing and Condition Monitoring. 52:130-133
Laser ultrasonics is a well known and mature non-destructive technique for inspecting polymer matrix composites used in aerospace. This technique uses a pulse echo interrogation mode, in which ultrasound is first generated by a pulsed laser and then
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b3ecfce28b1827e2e13fd83a8f89ed6a
https://doi.org/10.1784/insi.2010.52.3.130
https://doi.org/10.1784/insi.2010.52.3.130
Autor:
Gerald V. Jeskey, Silvio E. Kruger, Daniel Lévesque, Jean-Pierre Monchalin, M. Choquet, Guy Lamouche, R. Kolarik
Publikováno v:
NDT & E International. 39:622-626
The seamless tube-making process often causes wall-thickness variations generally in a helical pattern along the tube length. A laser-ultrasonic system installed immediately after the final operation in tube making provides process monitoring. Tube w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c76c496d4883e71984383af1e1f42ff8
https://doi.org/10.1016/j.ndteint.2006.04.009
https://doi.org/10.1016/j.ndteint.2006.04.009
Publikováno v:
Optics Communications. 239:297-301
We analyze the influence of the frequency dependent accumulated Gouy phase anomaly on the axial precision of optical coherence tomography (OCT) measurements. Relying on a fiber-based OCT configuration, we develop a model and demonstrate experimentall
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2c72531bcfcda6f1bf214c49d3959661
https://doi.org/10.1016/j.optcom.2004.06.002
https://doi.org/10.1016/j.optcom.2004.06.002
Publikováno v:
Measurement Science and Technology. 15:1939-1946
We present a new pulsed laser oscillator and system for the optical detection of ultrasound in materials. A single-frequency laser oscillator based on a pulse pumped Nd:YAG rod inside a ring cavity is proposed. The laser delivers single-frequency pul
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ab69a15d6d5cdf715c9e574644955efc
https://doi.org/10.1088/0957-0233/15/9/035
https://doi.org/10.1088/0957-0233/15/9/035
The possibility of nondestructively characterizing the microstruc ture, morphology or mechanical properties of materials is certainly a fascinating subject. In principle, such techniques can be used at all stages of a material's life - from the ear