Title :
New non-destructive photothermal measurement of anisotropically distributed residual stress inside samples
Author :
Yarai, Atsushi ; Yokoyama, Yasuhiro ; Nakanishi, Takuji
fDate :
Oct. 31 1994-Nov. 3 1994
Abstract :
A new technique is proposed for measuring anisotropically distributed residual stress on the inside of samples. This technique applies our photopyroelectric thermal wave detection equipment. The loaded stress dependence of anisotropic thermal diffusivities is demonstrated as a parameter of sample hardness. It is also confirmed that this method effectively enables material fatigue evolution inside the samples
Keywords :
fatigue testing; hardness testing; internal stresses; nondestructive testing; photothermal effects; pyroelectric detectors; stress measurement; thermal diffusivity; anisotropic thermal diffusivities; anisotropically distributed residual stress; loaded stress dependence; local thermal wave transmissions; material fatigue evolution; nondestructive photothermal measurement; photopyroelectric thermal wave detection; sample hardness; Hardness measurement; Nondestructive testing; Pyroelectric materials/devices; Stress; Stress measurement;
Conference_Titel :
Ultrasonics Symposium, 1994. Proceedings., 1994 IEEE
Conference_Location :
Cannes, France
Print_ISBN :
0-7803-2012-3
DOI :
10.1109/ULTSYM.1994.401740
