Accession Number:

ADA257460

Title:

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

Descriptive Note:

Technical rept. 1 May 1987-30 Jun 1991

Corporate Author:

VIRGINIA POLYTECHNIC INST AND STATE UNIV BLACKSBURG DEPT OF ENGINEERING SCIENCE AND MECHANICS

Personal Author(s):

Report Date:

1992-04-01

Pagination or Media Count:

136.0

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.

Subject Categories:

  • Laminates and Composite Materials
  • Structural Engineering and Building Technology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE