Degradation of Graphite/Epoxy Composite Materials because of Load Induced Micromechanical Damage,
Abstract
Coupons axially loaded beyond a critical stress level induce permanent micromechanical damage which results in subsequent loading degradation. This phenomena will be shown for static tension, static compression, and tensile fatigue types of loading. Such observations are accurate for larger structural elements where edge effects are not significant. Where they are, the results will be low (conservative) as size goes up. Therefore, relating observed damage to failture criteria and structural design is a reasonable and safe operation. Coupons axially loaded beyond a critical stress level induce permanent micromechanical damage which results in subsequent loading degradation. This phenomena will be shown for static tension, static compression, and tensile fatigue types of loading. Such observations are accurate for larger structural elements where edge effects are not significant. Where they are, the results will be low (conservative) as size goes up. Therefore, relating observed damage to failture criteria and structural design is a reasonable and safe operation. Coupons axially loaded beyond a critical stress level induce permanent micromechanical damage which results in subsequent loading degradation. This phenomena will be shown for static tension, static compression, and tensile fatigue types of loading. Such observations are accurate for larger structural elements where edge effects are not significant. Where they are, the results will be low (conservative) as size goes up. Therefore, relating observed damage to failture criteria and structural design is a reasonable and safe operation.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1974
- Accession Number
- ADA301937
Entities
People
- G. C. Grimes
- J. M. Whitney
Organizations
- Southwest Research Institute