Evaluation of Flawed Composite Structural Components Under Static and Cyclic Loading,

Abstract

This report presents the results of a program investigating the effects of initial defects on the fatigue and fracture response of composite laminates. The structural laminates investigated were a typical angle ply laminate, a polar/hoop wound pressure vessel laminate, and a typical engine fan blade laminate. Defects investigated were full and half penetration circular holes, full and half penetration slits, and countersink holes. Results are presented showing the effects of the defect size and type on the static fracture strength, fatigue performance, and residual static strength. The results of inspection procedures are shown, describing the effect of cyclic and static loadings on damage propagation in composite laminates. The data in this study were used to define proof test levels as a qualification procedure in composite structure subjected to cyclic loading. (MM)

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1979
Accession Number
ADA304480

Entities

People

  • T. R. Porter

Organizations

  • Boeing

Tags

Communities of Interest

  • Ground and Sea Platforms
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aircrafts
  • Composite Materials
  • Composite Structures
  • Cyclic Tests
  • Engineering
  • Fabrication
  • Fatigue Tests (Mechanics)
  • Jet Propulsion
  • Laminates
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Materials Testing
  • Mechanics
  • Structural Components
  • Test And Evaluation
  • Test Methods

Fields of Study

  • Materials science

Readers

  • Structural Health Monitoring of Composite Structures.