A Probabilistic Method to Establish the Reliability of Carbon-Carbon Rocket Motor Nozzles. Volume 2. Reliability and Failure Analyses of 2-D Carbon-Carbon Structural Components

Abstract

The strength of brittle materials is characterized by a wide scatter. Such materials are also afflicted by size effects. Size effects in brittle composite structures such as beams and plates with and without stress raisers are investigated experimentally and analytically. A methodology for reliability analysis of carbon-carbon composites is presented. The model is based on Weibull statistics which was extended to account for the three-dimensional stress field including interlaminar stresses. Failure criteria for bi-directional orthotropic lamina are developed and failure analysis in the non-probabilistic sense (i.e., First-ply-failure analysis) is performed. Comparisons are made with existing failure criteria, with the results of the reliability analysis and also with experiments.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1992
Accession Number
ADA257460

Entities

People

  • I. Yeo
  • R. A. Heller
  • S. Thangjitham

Organizations

  • Virginia Tech

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Carbon Carbon Composites
  • Composite Materials
  • Elastic Properties
  • Failure Mode And Effect Analysis
  • Fiber Reinforced Composites
  • Finite Element Analysis
  • Geometry
  • Laminates
  • Materials Laboratories
  • Materials Testing
  • Mechanics
  • Reinforced Plastics
  • Shear Stresses
  • Stress Strain Relations
  • Tensile Strength
  • Three Dimensional
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Adaptive Control and Estimation with Uncertainty in Dynamic Systems.
  • Materials Science (Mechanical Engineering).
  • Reinforced Composite Materials