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Failure mechanisms of cross-ply carbon fiber reinforced polymer laminates under longitudinal compression with experimental and computational analyses
- Source :
- Composites Part B: Engineering. 167:147-160
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- This study investigates the failure mechanisms of cross-ply laminates subjected to longitudinal compressive loading. A sequence of failure initiation and propagation process is observed based on optical microscopy images of failed specimens. Specifically, the failure process in the cross-ply laminates involves a combination of four failure mechanisms: fiber kinking, delamination, matrix cracking, and fiber/matrix splitting. We find that the kink-bands in the middle 0° plies of the cross-ply laminates most often show a wedge shape and the angle of matrix cracks in the 90° plies is slightly larger than that of pure 90° plies. The reason has been attributed to the constraining effects by the adjacent plies. The next focus of this study is to propose hybrid micro-macro models to more systematically study the failure mechanisms of the cross-ply laminates. We show that these models accurately predict the combined failure modes of the cross-ply laminates and enable us to closely investigate the interactions of different failure mechanisms. More importantly, the hybrid models achieve great computational efficiency compared to full-scale microstructural models. The combined experimental and computational analyses presented here provide a new level of understanding of the kink-band morphology and damage mechanisms in the cross-ply laminates.
- Subjects :
- Carbon fiber reinforced polymer
Materials science
Mechanical Engineering
Delamination
Cross ply
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
Compression (physics)
01 natural sciences
Industrial and Manufacturing Engineering
0104 chemical sciences
Compressive load
Matrix (mathematics)
Mechanics of Materials
Matrix splitting
Ceramics and Composites
Fiber
Composite material
0210 nano-technology
Subjects
Details
- ISSN :
- 13598368
- Volume :
- 167
- Database :
- OpenAIRE
- Journal :
- Composites Part B: Engineering
- Accession number :
- edsair.doi...........e2cfbd96fb6d30878f4f1772be05f09f