Determination of stress distribution in an aluminum alloy by laser ultrasonics

Authors
Qian, ML Pan, YD Xu, WJ Duqennoy, M Ourak, M
Citation
Ml. Qian et al., Determination of stress distribution in an aluminum alloy by laser ultrasonics, PROG NAT SC, 11, 2001, pp. S289-S292
Citations number
7
Categorie Soggetti
Multidisciplinary
Journal title
PROGRESS IN NATURAL SCIENCE
ISSN journal
10020071 → ACNP
Volume
11
Year of publication
2001
Supplement
S
Pages
S289 - S292
Database
ISI
SICI code
1002-0071(200105)11:<S289:DOSDIA>2.0.ZU;2-O
Abstract
A residual-stress profile as a function of depth in an aluminum alloy sheet is determined by laser-ultrasonic technique. Rayleigh waves are generated by a Nd:YAG pulse laser and detected by a Heterodyne interferometer on a la teral free surface of the sheet. The distribution of residual stress is det ermined by measurement of the relative variation of the Rayleigh wave veloc ities versus the depth. The experimental result is in good agreement with t hat obtained with the PZT technique.