Fatigue Properties of Graphite/Glass/Epoxy Composites.
Abstract
Two ternary composite material systems, PR 286/Modmor II/Graphite/S-Glass and PR 286/ HMS Graphite/S-Glass, involving two types of lamination fabrications, namely uniformly distributed interply hybrids and core-shell hybrids, were investigated. The test program included static tests, tensile fatigue tests, shear fatigue tests, modulus degradation studies and microscopic examination. The study shows that hybrid composites perform generally satisfactorily in fatigue and will survive rigorous stress cycling. Distributed interply hybrids show a better mechanical performance than core- shell hybrids. The mechanical behavior of hybrid composites generally follows the rule of mixtures and the rule of mixtures can be used to predict elastic moduli of hybrids. The performance (as a percentage of the fatigue strength at any given life) of 1:1 graphite/glass/epoxy relative to pure HMS GRAPHITE IS BETTER THAN THAT OF 1:1 HTS Graphite/glass/epoxy relative to pure HTS GRAPHITE/EPOXY. (Author, modified-PL)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1973
- Accession Number
- AD0763760
Entities
People
- K. E. Hofer Jr.
- Nagaraja Rao
Organizations
- IIT Research Institute