Environmental Durability of Fiber Reinforced Composites
Final rept. 1 Dec 1976-30 Nov 1978
ROCKWELL INTERNATIONAL CORP THOUSAND OAKS CA SCIENCE CENTER
Pagination or Media Count:
An investigation has been completed which determines the physiochemical mechanisms of environmental durability and degradation of graphite-epoxy Thornel T300 in 5208 epoxy and fiber glass-epoxy S-2 glass in 5208 epoxy under hydro-thermal high moisture and temperature exposure. Surface energy and moisture diffusion analysis provide nondestructive test methods which detect irreversible degradatiion of the fiber-matrix interface. Dynamic mechanical damping detects reversible volumetric plasticization effect on modulus, and the interlaminar shear strength and transfibrous fracture energy distributions. A composite durability characterization program is demonstrated which effectively combines preventative nondestructive evaluation PNDE with environmental failure and micromechanics analysis of composite structural reliability.
- Refractory Fibers
- Laminates and Composite Materials