Laser-ultrasonic measurements of residual stresses in a 7075-T651 aluminum sample surface-treated with low-plasticity burnishing

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DOIResolve DOI: http://doi.org/10.1063/1.2184692
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TypeArticle
Proceedings titleReview of Progress in Quantitative Nondestructive Evaluation
Series titleAIP Conference Proceedings; no. 820
ConferenceReview of Progress in Quantitative Nondestructive Evaluation, July 31 - August 5 2005, Brunswick, ME
ISSN0094-243X
Subjectaluminum; anisotrophy; plasticity; rough surfaces; surface acoustic waves
AbstractLow-plasticity burnishing (LPB) is used to introduce deep compressive surface residual stresses that improve the durability of parts. A non-destructive measurement of residual stresses, their anisotropy, and distribution as a function of depth is being sought to verify initial process quality and residual stress retention over time. Laser-ultrasonic measurements of Rayleigh wave and surface skimming longitudinal wave (SSLW) velocities were used together to evaluate the magnitudes and directions of the two principal stresses independently of LPB-induced texture variations. The results agree with x-ray measurements at the surface. In addition, it was found that the laser-ultrasonic pulse generation mechanism was surface-process dependent.
Publication date
PublisherAmerican Institute of Physics
LanguageEnglish
AffiliationNRC Industrial Materials Institute; National Research Council Canada
Peer reviewedYes
NPARC number21273432
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Record identifier023d9b55-f351-41e6-95c5-4b2886e59e36
Record created2015-01-09
Record modified2016-05-09
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