Accession Number : AD0860245

Title :   Separation at the Interface of a Circular Inclusion and the Surrounding Medium Under an Incident Compressive Wave.

Descriptive Note : Technical summary rept. 1 Sep-30 Nov 68,

Corporate Author : NORTHWESTERN UNIV EVANSTON IL DEPT OF CIVIL ENGINEERING

Personal Author(s) : Achenbach, Jan D. ; Hemann, John H. ; Ziegler, Franz

Report Date : AUG 1969

Pagination or Media Count : 40

Abstract : Separation at the interface of a circular inclusion embedded in a matrix of lower characteristics impedance and subjected to incident compressive waves is investigated, both experimentally and analytically. In the experiment, the compressive waves were generated by small explosive charges. The qualitative analytical treatment is based on the methods of propagating stress discontinuities. It is shown that a compressive stress wave is converteed into a tensile wave after a refraction and a reflection inside the inclusion. The results of this paper apply to the behavior of fiber-reinforced composites under dynamic loading conditions. (Author, modified-PL).

Descriptors :   (*COMPOSITE MATERIALS, COMPRESSIVE PROPERTIES), (*BONDING, FAILURE(MECHANICS)), INTERFACES, SEPARATION, LOADS(FORCES), SHOCK WAVES, PROPAGATION, STRESSES, FIBERS, REFRACTION, REFLECTION, TENSILE PROPERTIES, ELASTIC PROPERTIES, EXPLOSIVE CHARGES, MATHEMATICAL ANALYSIS, EXPERIMENTAL DESIGN.

Subject Categories : Laminates and Composite Materials
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE