Laser Generated Ultrasound

  • A. Sarrafzadeh
  • R. J. Churchill
  • M. G. Niimura

Abstract

This paper describes a laser-based ultrasonic system using high-energy, short-pulse trains for laser generation. Ongoing research includes the theoretical extension of laser-solid interactions related to laser generation of ultrasound in complex structures and advanced materials and the investigation of methods to achieve a high speed, high resolution laser excitation system for integration with a highly sensitive ultrasonic signal detector. Experiments are being conducted for the flaw inspection/characterization of rails using laser-based photoacoustic excitation techniques including ultrasonic detection by both piezoelectric and noncontacting laser interferometric means. This work was supported in part by the U.S. Department of Transportation under Contract No. DTRS-57-85-C-00132

Keywords

Laser Generation Ruby Laser Elastic Wave Equation Interferometric Detection Repetitive Pulse Frequency 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    C. B. Scruby, R. J. Dewhurst, D. A. Hutchins, and S. B. Palmer, Laser Generation of Ultrasound in Metals, in: “Research Techniques in Nondestructive Testing,” R. S. Sharpe, ed., Academic Press, New York (1982).Google Scholar
  2. 2.
    C. Birnbaum and G. S. White, Laser Techniques in NDE, in: “Research Techniques in Nondestructive Testing, Vol. 7,” R. S. Sharpe, ed., Academic Press, New York (1984).Google Scholar
  3. 3.
    W. W. Duley, “Laser Processing and Analysis of Materials,” Plenum Press, New York (1983).CrossRefGoogle Scholar
  4. 4.
    A. M. Aindow, R. J. Dewhurst, and S. B. Palmer, Laser-Generation of Directional Acoustic Surface Wave Pulses in Metals, Optics Comm. 42:116 (1982).ADSCrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 1988

Authors and Affiliations

  • A. Sarrafzadeh
    • 1
  • R. J. Churchill
    • 1
  • M. G. Niimura
    • 1
  1. 1.American Research Corporation of VirginiaRadfordUSA

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