Statistical Analysis of Fatigue of Composite Materials.

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)

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1978
Accession Number
ADA064151

Entities

People

  • A. S. D. Wang
  • Pei Chi Chou

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Composite Materials
  • Data Sets
  • Death
  • Distribution Functions
  • Epoxy Composites
  • Fatigue Tests (Mechanics)
  • Graphitic Materials
  • Laminates
  • Materials
  • Materials Laboratories
  • Materials Testing
  • Probability
  • Probability Density Functions
  • Random Variables
  • Statistical Analysis
  • Test Methods

Readers

  • Regression Analysis.
  • Structural Health Monitoring of Composite Structures.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).