Studies on the Viscoelastic Behavior of Fiber-Reinforced Plastic.
Final rept. 1 Jan 69-31 Dec 72,
TEXAS A AND M UNIV COLLEGE STATION MECHANICS AND MATERIALS RESEARCH CENTER
Pagination or Media Count:
A model for microcrack growth in viscoelastic fibrous composites is developed and incorporated into a viscoelastic constitutive theory. The applicability of this crack propagation analysis for predicting the influence of stress history on failure of composites is then examined. Mechanical behavior of a unidirectional graphite fiber-reinforced epoxy is characterized in terms of the separate effects of constant and transient temperatures, fiber angle, single and multiple cycle loading, and stress level. The nature of the microstructure and a possible crack arrest mechanism are shown in micrographs obtained with a scanning electron microscope. Author, modified-PL
- Laminates and Composite Materials