A Study of the Fatigue Behavior of Fiber Reinforced Composites.
Abstract
A phenomenological model combining a Weibull distribution function with a kinetic equation for flaw growth was used to describe the static tensile strengths and fatigue lives of short graphite fiber reinforced nylon 66 sheet materials. An electrical resistivity technique was developed to measure the rate of flaw growth and scanning electron microscope studies were made in order to catalog differences in the fracture surfaces of short-lived and long-lived structures. Scanning electron microscope studies showed that specimens with a short fatigue life have glassy, fibrillated fracture surfaces while specimens with a long fatigue life exhibit a high degree of ductility in portions of the fracture surface. These differences are traced to differences in the size and shape of flaws.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1974
- Accession Number
- ADA005562
Entities
People
- A. T. Dibenedetto
- Gideon Salee
- Robert Hlavacek
Organizations
- University of Connecticut