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  4. Theoretical and experimental investigations of broadband thermoelastically generated ultrasonic pulses
 
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1988
Conference Paper
Title

Theoretical and experimental investigations of broadband thermoelastically generated ultrasonic pulses

Abstract
Broadband ultrasonic pulses can be remotely generated by short laser pulses at solid surfaces via the thermoelastic effect and by ablation of surface material. Such a technique might be a viable tool in nondestructive evaluation. This contribution firstly outlines the elements of a hitherto lacking three-dimensional theory of thermoelastic sound generation and secondly a comparison with experimental results is given.
Author(s)
Schleichert, U.
Arnold, W.
Hoffmann, B.
Langenberg, K.-J.
Paul, M.
Mainwork
Photoacoustic and Photothermal Phenomena 1987  
Conference
International Topical Meeting on Photoacoustic and Photothermal Phenomena 1987  
Language
English
Fraunhofer-Institut für Zerstörungsfreie Prüfverfahren IZFP  
Keyword(s)
  • experiment

  • kurze Laserpulse

  • quantitatives theoretisches Modell

  • Thermoelastischer Effekt

  • Ultraschallerzeugung

  • Winkelcharakteristik

  • zeitlicher Signalverlauf

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