Accession Number:

AD0678531

Title:

STRESS WAVE GENERATION IN A TEMPERATURE-DEPENDENT ABSORBING SOLID BY IMPULSIVE ELECTROMAGNETIC RADIATION.

Descriptive Note:

Technical rept.,

Corporate Author:

CALIFORNIA UNIV SAN DIEGO LA JOLLA DEPT OF THE AEROSPACE AND MECHANICAL ENGINEERING SCIENCES

Personal Author(s):

Report Date:

1968-06-01

Pagination or Media Count:

33.0

Abstract:

An elastic, partially transparent solid, occupying the half space x 0, is subjected to uniform impulsive electromagnetic radiation at the surface x 0. The deposition of radiant energy over a finite absorption depth gives rise to a distributed heat source within the solid thermal shock which, in turn, dilatates the medium and generates a stress wave. In this paper the nature of the stress-wave build up in the absorption layer is studied for the case of a temperature-dependent solid, i.e., when material properties vary with temperature. The mathematical problem is one of wave propagation in a non-homogeneous medium. An approximate solution to the posed problem is developed which readily exhibits the influence of temperature. Error bounds are provided. The results are illustrated by a numerical example. Author

Subject Categories:

  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE