8 ITMP3 / 8éme conférence internationale de photoacoustique et photothermique
J. Phys. IV France 04 (1994) C7-311-C7-314
Photoacoustic visualization of residual stress in ceramic materialR.M. Burbelo1, A.L. Gulyaev1, L.I. Robur1, M.K. Zhabitenko1, B.A. Atamanenko2 and Ya.A. Kryl2
1 Physics Faculty, Taras Shevchenko University, 252017 Kiev, Ukraine
2 Institute for Super Hard Materials, 254153 Kiev, Ukraine
The paper presents results of the photoacoustic visualization of fields of residual stress in ceramic material based on silicon nitride. Theoretical analysis yields that the main contribution to the change of photoacoustic (PA) response value is made by nonlinearity of elastic properties of the medium.
© EDP Sciences 1994