Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
  • Chinese Optics Letters
  • Vol. 6,
  • Issue 11,
  • pp. 837-840
  • (2008)

Investigation of surface acoustic waves in laser shock peened metals

Not Accessible

Your library or personal account may give you access

Abstract

Laser shock peening is a well-known method for extending the fatigue life of metal components by introducing near-surface compressive residual stress. The surface acoustic waves (SAWs) are dispersive when the near-surface properties of materials are changed. So the near-surface properties (such as the thickness of hardened layers, elastic properties, residual stresses, etc.) can be analyzed by the phase velocity dispersion. To study the propagation of SAWs in metal samples after peening, a more reasonable experimental method of broadband excitation and reception is introduced. The ultrasonic signals are excited by laser and received by polyvinylindene fluoride (PVDF) transducer. The SAW signals in aluminum alloy materials with different impact times by laser shock peening are detected. Signal spectrum and phase velocity dispersion curves of SAWs are analyzed. Moreover, reasons for dispersion are discussed.

© 2008 Chinese Optics Letters

PDF Article
More Like This
Confinement and absorption layer free nanosecond laser shock peening of tungsten and its alloy

Saumyabrata Banerjee and Jacob Spear
Opt. Lett. 47(18) 4736-4739 (2022)

Laser shock peening of tungsten and its dependency on polarisation of light for induced compressive stresses

Saumyabrata Banerjee, Jacob Spear, and Patrick J. Dalton
Opt. Express 30(18) 32084-32096 (2022)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved