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Digitale Medien

Optical measurement of crack propagation with high resolution (1993)

Koizumi, H. ; Kuroda, K. ; Suzuki, T.

[S.l.] : American Institute of Physics (AIP)

Review of Scientific Instruments 64 (1993), S. 1822-1824

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Details

ISSN: 1089-7623

Quelle: AIP Digital Archive

Thema: Physik , Elektrotechnik, Elektronik, Nachrichtentechnik

Notizen: A new optical method is established to measure the crack length and its velocity in transparent crystals by utilizing the total reflection of light beam at the cleavage crack plane. The optical system is constructed by using a laser, a PIN photodiode sensor, and a wave memory. With the apparatus the crack propagation velocity can be measured at any desired position inside the specimen with a time resolution of less than 1 μs. The measurement on a cleavage crack in NaCl reveals that the maximum speed of the crack is about 800 m/s and the fluctuation of the velocity occurs prior to the arrest.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1063/1.1144017

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