Statistical Fatigue Failure Time of Unidirectional CFRP under Compression Loading
Abstract
The statistical long term fatigue life prediction for the longitudinal compression of unidirectional CFRP as well as the longitudinal tension is one of the most important basic items for the durability design of CFRP structures used for aircrafts and others. In this project, we discuss the validity of our developed accelerated testing methodology ATM for this fatigue life prediction. First, the statistical time and temperature dependent fatigue strength of unidirectional CFRP under compressive loading is formulated based on the viscoelasticity of matrix resin. Second, the statistical quasi static strength of unidirectional CFRP under compression loading and the creep compliance of matrix resin are measured at various temperatures. Third, the statistical fatigue failure time predicted by using the measured data is compared with that measured directly by the fatigue tests. As results, the applicability of our developed ATM for the longitudinal fatigue compression for unidirectional CFRP is confirmed.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jan 14, 2022
- Source ID
- FA23861914007XX0
Entities
People
- Yasushi Miyano
Organizations
- Air Force Office of Scientific Research
- Kanazawa Institute of Technology
- United States Air Force