Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Takao Hyoguchi"'
Publikováno v:
Journal of Nondestructive Evaluation. 12:71-77
We have developed an on-line system for the measurement of plastic strain ratio of steel sheet using a thickness resonance EMAT that measures the thickness resonance frequencies of three different modes of bulk ultrasonic waves. The effective size of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6afd1cd3a79eb1a74fcb536decfdc5a1
https://doi.org/10.1007/bf00565910
https://doi.org/10.1007/bf00565910
Autor:
Toshio Akagi, Yasutaka Nawata, Takao Hyoguchi, Katsuhiro Kawashima, Atsushi Yoshiwara, Satoshi Watanabe
Publikováno v:
Tetsu-to-Hagane. 79:877-882
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::431c2ab0a1ce76e2dff0fe1b51f31d6d
https://doi.org/10.2355/tetsutohagane1955.79.7_877
https://doi.org/10.2355/tetsutohagane1955.79.7_877
Publikováno v:
Nondestructive Testing and Evaluation. 7:149-163
This paper describes new applications of laser picosecond ultrasonics to the nondestructive testing of transparent and opaque thin films of thickness in the range 20 nm to 10 μm. The optical pump-probe technique is used to excite ultrasonic stress p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1941851b01fd3339c1cd67c3bd64b85d
https://doi.org/10.1080/10589759208952995
https://doi.org/10.1080/10589759208952995
Publikováno v:
Springer Series in Solid-State Sciences ISBN: 9783642848902
Picosecond phonon pulses are optically excited and detected in transparent double-layer films of silica and amorphous silicon nitride on chromium substrates. By modelling the reflectance variation we derive the film thicknesses, sound velocities and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d54054ccaecb0c4af5b4d3b2b32fdbee
https://doi.org/10.1007/978-3-642-84888-9_180
https://doi.org/10.1007/978-3-642-84888-9_180
Publikováno v:
Photoacoustic and Photothermal Phenomena III ISBN: 9783662138762
We present a new optical technique, PATS, or picosecond acoustics for thickness and sound velocity, for the non-destructive testing of thin transparent films on opaque substrates. It is applied to films of silica and to a double layer transparent fil
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::be5399a213b0ed0d938d604c1959ca48
https://doi.org/10.1007/978-3-540-47269-8_78
https://doi.org/10.1007/978-3-540-47269-8_78
Publikováno v:
Japanese Journal of Applied Physics. 33:2837
High frequency resonant mode electromagnetic ultrasonic generation and detection in metals is demonstrated at frequencies up to ∼150 MHz with various metal sheet samples. Using a unified theory of the generation and detection process, it is shown h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e60f0e572b5c1238c1ea5d56e56a789c
https://doi.org/10.1143/jjap.33.2837
https://doi.org/10.1143/jjap.33.2837
Publikováno v:
Japanese Journal of Applied Physics. 31:85
We describe the excitation and detection of picosecond stress pulses in a variety of thin films using an ultra fast laser pump-probe technique to measure the film reflectance variation. An opaque thin film of amorphous diamond-like carbon of known th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bf9dac8b25959440a4bc7e2eb5b9a533
https://doi.org/10.7567/jjaps.31s1.85
https://doi.org/10.7567/jjaps.31s1.85
Publikováno v:
Japanese Journal of Applied Physics. 30:L131
Using the pump-probe technique with laser noise compensation, laser picosecond acoustic measurements were carried out for the amorphous sputtered thin films a-Ge and a-InSb on sapphire substrates with both pump and probe beams incident on the front s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eb09c8dab1008b704031249d68e3b5b1
https://doi.org/10.1143/jjap.30.l131
https://doi.org/10.1143/jjap.30.l131
Publikováno v:
Japanese Journal of Applied Physics; January 1991, Vol. 30 Issue: 1 pL131-L131, 1p