Visualisation of Wave Propagation in Impulse-Loaded Bars

  • Erwin David
  • Rudi Schall
  • Hubert Schardin
Part of the International Union of Theoretical and Applied Mechanics book series (IUTAM)

Abstract

Various experimental techniques which can be used for the visualisation of stress waves are considered and their applicability to the study of wave propagation in bars is discussed. Some experimental results which were obtained by means of shadow photography are given. These were obtained with bars immersed in water and show the existence of precursor waves which travel with the velocity of propagation in an unbounded medium. A qualitative theory of the wave system is outlined and it is shown that the concept of group velocity in terms of the Pochhammer-Chree treatment leads to some difficulties in this problem.

A second investigation using a different method of visualisation, namely flash radiography is also described. This technique has here been used for studying the passage of intense plastic waves in rods.

Keywords

Attenuation Explosive Sine Compressibility Photography 

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References

  1. [1]
    Schardin, H.: International Symposium on Stress Wave Propagation in Materials, New York: Interscience Publishers 1960, pp. 289–302.Google Scholar
  2. [2]
    Curtis, C. W.: ibid., pp. 15–43, especially p. 33.Google Scholar
  3. [3]
    Schall, R., and G. Thomer: Technical Report, AF EOAR 61–52 (July 1962). This research has been sponsored in part by the Air Force Special Weapons Center through the European Office, Aerospace Research, United States Air Force.Google Scholar

Copyright information

© Springer Verlag, Berlin / Göttingen / Heidelberg 1964

Authors and Affiliations

  • Erwin David
    • 1
    • 2
  • Rudi Schall
    • 1
    • 2
  • Hubert Schardin
    • 1
    • 2
  1. 1.Franco-German Research InstituteSt. Louis (Haut-Rhin)France
  2. 2.Ernst-Mach-InstitutFreiburgGermany

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