The Effect of Environment on the Mechanical Behavior of AS/3501-6 Graphite/Epoxy Material
Abstract
The effect of temperature and moisture on the fatigue properties of AS/3501-6 composite was explored. This includes the design of a fatigue specimen, its fabrication procedure, displacement and temperature monitoring technique, and analysis/data correlation. The specimens used were of layup (90) sup 20 and (+ or - 45) sub 2S. The fatigue load ratio was set at 0.1 and the cyclic frequency was set at three hertz. No appreciable heat was generated in the 90 deg specimen during fatigue. The + or - 45 specimens experienced appreciable temperature increases at various environments. Test data from a fatigue tension test was generated to supplement the analysis of predicting the temperature distribution in the specimen due to continuous heat generation experienced by the + or - 45 deg specimen. A probabilistic fatigue model derived from the concept of crack propagation in viscoelastic material was used for the data analysis. The temperature effect and moisture effect was accounted for by this analysis model.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 10, 1980
- Accession Number
- ADA099851
Entities
People
- Tak‐San Ho
Organizations
- Vought