Accession Number : AD0781130

Title :   Basic Failure of Composites. Part I. Data Averaging of Anisotropic Composite Material Constants.

Descriptive Note : Technical rept. 1 May 71-1 May 72,

Corporate Author : WASHINGTON UNIV ST LOUIS MO MATERIALS RESEARCH LAB

Personal Author(s) : Wu,Edward M. ; Lavengood,R. E.

Report Date : NOV 1973

Pagination or Media Count : 42

Abstract : Material parameters which are dependent on direction of orientation can best be represented by tensors of appropriate ranks. Using tensor transformation rule and associated scalar invariants of the tensor, experimental data can be averaged and reduced to compact constants for engineering documentation and retrieval. Examples on data averaging of composite swelling coefficients and of elastic compliances illustrate the simplicity and viability of this tensor averaging methodology. (Author-PL)

Descriptors :   *Composite materials, *Tensor analysis, Failure, Elastic properties, Expansion, Measurement, Orientation(Direction), Test methods, Anisotropy, Predictions

Subject Categories : Laminates and Composite Materials
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE