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Title: Laser-Ultrasonic Measurements of Residual Stresses in a 7075-T651 Aluminum Sample Surface-Treated with Low Plasticity Burnishing

Abstract

Low-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.

Authors:
 [1];  [2]
  1. Industrial Material Institute, National Research Council of Canada, 75 de Mortagne Boucherville, QC, J4B 6Y4 (Canada)
  2. Department of Mathematics, University of Kentucky, 715 Patterson Office Tower, Lexington, KY 40506-0027 (United States)
Publication Date:
OSTI Identifier:
20798235
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 820; Journal Issue: 1; Conference: Conference on review of progress in quantitative nondestructive evaluation, Brunswick, ME (United States), 31 Jul - 5 Aug 2005; Other Information: DOI: 10.1063/1.2184692; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALUMINIUM ALLOYS; LASER RADIATION; PLASTICITY; RAYLEIGH WAVES; RESIDUAL STRESSES; SOUND WAVES; SURFACES; ULTRASONIC TESTING; X RADIATION

Citation Formats

Moreau, A., and Man, C.-S. Laser-Ultrasonic Measurements of Residual Stresses in a 7075-T651 Aluminum Sample Surface-Treated with Low Plasticity Burnishing. United States: N. p., 2006. Web. doi:10.1063/1.2184692.
Moreau, A., & Man, C.-S. Laser-Ultrasonic Measurements of Residual Stresses in a 7075-T651 Aluminum Sample Surface-Treated with Low Plasticity Burnishing. United States. doi:10.1063/1.2184692.
Moreau, A., and Man, C.-S. Mon . "Laser-Ultrasonic Measurements of Residual Stresses in a 7075-T651 Aluminum Sample Surface-Treated with Low Plasticity Burnishing". United States. doi:10.1063/1.2184692.
@article{osti_20798235,
title = {Laser-Ultrasonic Measurements of Residual Stresses in a 7075-T651 Aluminum Sample Surface-Treated with Low Plasticity Burnishing},
author = {Moreau, A. and Man, C.-S.},
abstractNote = {Low-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.},
doi = {10.1063/1.2184692},
journal = {AIP Conference Proceedings},
number = 1,
volume = 820,
place = {United States},
year = {Mon Mar 06 00:00:00 EST 2006},
month = {Mon Mar 06 00:00:00 EST 2006}
}