Failure analysis of a graphite/epoxy laminate subjected to combined thermal and mechanical loading

Journal Article · Sun Sep 01 00:00:00 EDT 1985 · J. Compos. Mater.; (United States)

DOI:https://doi.org/10.1177/002199838501900502· OSTI ID:5819701

Chen, J K; Sun, C T; Chang, C I

Quasi-static thermal stress response and failure behavior of graphite/epoxy laminated plates under combined intense thermal and mechanical loadings are investigated. The temperature field is obtained by using a one-dimensional finite difference code. The effects of ablation, degradation of thermophysical properties at elevated temperatures, and radiation and convective heat losses are included in the formulation. In the thermal stress and strength analyses, the temperature-dependent mechanical properties and temperature-dependent strengths are used. A nine-node isoparametric finite element is employed to calculate the structural responses. The maximum stress criterion is adopted for failure predictions. Numerical results include the temperature distribution over the thickness of the plate, structural responses, and time to failure. The analytical predictions are compared with experimental data. 17 references.

• Research Organization: Purdue Univ., West Lafayette, IN; Naval Research Lab., Washington, DC
• OSTI ID: 5819701
• Journal Information: J. Compos. Mater.; (United States), Vol. 19
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COMPOSITE MATERIALS
MECHANICAL PROPERTIES
COMPARATIVE EVALUATIONS
FAILURES
FINITE ELEMENT METHOD
THERMAL STRESSES
MATERIALS
NUMERICAL SOLUTION
STRESSES
360303* - Composite Materials- Mechanical Properties- (-1987)