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Characterization of Elastic Properties of Metals and Composites by Laser-Induced Ultrasound

  • V. V. KozhushkoEmail author
  • V. P. Sergienko
  • Y. N. Mirchev
  • A. R. Alexiev
Chapter
Part of the Engineering Materials book series (ENG.MAT.)

Abstract

The development of new materials and composites with desired mechanical properties requires methods for evaluation of their elastic moduli. The direct measurements of the shear and longitudinal ultrasonic pulse are the simplest approach for solution of these tasks. Among the drawback of the traditional ultrasonic methods are narrow bandwidth and necessity of the relatively large volume of the material for testing. Laser excitation of ultrasound is based on optoacoustic conversion that induces bulk pulses of about tens nanosecond duration and can be applied for time-resolved measurements of velocities. The paper considers several experimental arrangements, which combine laser excitation of probe ultrasonic pulses and their detection for measuring the velocities of longitudinal and shear pulses. The features of detection in single crystal and polycrystalline nickel as well as steel specimens are discussed.

Keywords

Laser-induced Ultrasound Scattering Elastic moduli Non-destructive testing Optoacoustics 

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Copyright information

© Springer International Publishing AG 2018

Authors and Affiliations

  • V. V. Kozhushko
    • 1
    Email author
  • V. P. Sergienko
    • 1
  • Y. N. Mirchev
    • 2
  • A. R. Alexiev
    • 2
  1. 1.V.A. Belyi Metal Polymer Research Institute of National Academy of Sciences of BelarusGomelBelarus
  2. 2.Institute of Mechanics of Bulgarian Academy of SciencesSofiaBulgaria

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