Abstract
High-cycle fatigue characteristics of quasi-isotropic carbon fiber reinforced plastic (CFRP) laminates [-45/0/45/90]s up to 108 cycles were investigated. To assess the fatigue behavior in the high-cycle region, fatigue tests were conducted at a frequency of 100 Hz, since it is difficult to investigate the fatigue characteristics in high-cycle at 5 Hz. Then, the damage behavior of the specimen was observed with a microscope, soft X-ray photography and a 3D ultrasonic inspection system. In this study, to evaluate quantitative characteristics of both transverse crack propagation and delamination growth in the high-cycle region, the energy release rate associated with damage growth in the width direction was calculated. Transverse crack propagation and delamination growth in the width direction were evaluated based on a modified Paris law approach. The results revealed that transverse crack propagation delayed under the test conditions of less than σ
| Original language | English |
|---|---|
| Pages (from-to) | 151-166 |
| Number of pages | 16 |
| Journal | Advanced Composite Materials: The Official Journal of the Japan Society of Composite Materials |
| Volume | 16 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2007 Mar 1 |
Keywords
- Delamination
- Energy release rate
- High-cycle fatigue
- Polymer-matrix composites
- Transverse cracking
ASJC Scopus subject areas
- Ceramics and Composites
- Mechanics of Materials
- Mechanical Engineering