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Diagnostics of metal plates with residual stresses and defects by nonlinear scanning laser vibrometry

Diagnostics of metal plates with residual stresses and defects by nonlinear scanning laser... Abstract Nonlinear scanning laser vibrometry is used for diagnostics of cylindrical resonators made of polycrystalline aluminum alloy with residual stresses and defects. The diagnostics is performed with flexural Lamb waves. The eigenmode frequency of such a resonator is found to depend on the amplitude of flexural Lamb waves excited in it (the fast dynamics effect), which points to the presence of a nonclassical nonlinear elasticity in the resonator material. Studying the nonlinear interactions between amplitude-modulated flexural Lamb waves in resonators allow the determination of the coordinates of defects and residual strains in them. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Acoustical Physics Springer Journals

Diagnostics of metal plates with residual stresses and defects by nonlinear scanning laser vibrometry

Acoustical Physics , Volume 61 (3): 8 – May 1, 2015

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References (29)

Publisher
Springer Journals
Copyright
2015 Pleiades Publishing, Ltd.
ISSN
1063-7710
eISSN
1562-6865
DOI
10.1134/s1063771015030100
Publisher site
See Article on Publisher Site

Abstract

Abstract Nonlinear scanning laser vibrometry is used for diagnostics of cylindrical resonators made of polycrystalline aluminum alloy with residual stresses and defects. The diagnostics is performed with flexural Lamb waves. The eigenmode frequency of such a resonator is found to depend on the amplitude of flexural Lamb waves excited in it (the fast dynamics effect), which points to the presence of a nonclassical nonlinear elasticity in the resonator material. Studying the nonlinear interactions between amplitude-modulated flexural Lamb waves in resonators allow the determination of the coordinates of defects and residual strains in them.

Journal

Acoustical PhysicsSpringer Journals

Published: May 1, 2015

Keywords: Acoustics

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