Accession Number:

ADA064151

Title:

Statistical Analysis of Fatigue of Composite Materials.

Descriptive Note:

Interim technical rept. 1 Apr 77-31 Mar 78,

Corporate Author:

DYNA EAST CORP WYNNEWOOD PA

Personal Author(s):

Report Date:

1978-07-01

Pagination or Media Count:

85.0

Abstract:

The objectives of the program are to study three basic hypotheses in fatigue of composite materials. Theese are 1 cyclic loading degradates the matrix properties and thus lower the compression strength more than tension-strength 2 the static strength and fatigue life have equal ranks and 3 the residual strength may increase. Both analytical and experimental approaches are used. The results are not yet conclusive. A sudden-death model is proposed to measure the degration of residual strength. Three regimes of residual strength are distinguished, these are the increase of strength, weak degradation, and strong degradation. Author

Subject Categories:

  • Laminates and Composite Materials
  • Statistics and Probability
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE