Moisture absorption behavior and hygrothermal aging life prediction for CFRP adhesive-bonded joints
2022-01-0389
03/29/2022
- Event
- Content
- Effects of moisture absorption on the strength degradation, energy absorption and failure mechanism of CFRP laminates and the adhesive-bonded joints in hygrothermal environment were investigated in this work. Experiments of accelerated moisture absorption, uniaxial tension and three-point bending were performed. SEM observations on the CFRP laminates and the fracture surfaces of the CFRP bonded joints were conducted. Strength degradation and failure mechanism induced by moisture absorption were discussed in detail. The results showed that the strength degradation in tension and in three-point bending of the CFRP laminate due to moisture absorption reached 7.4% and 17.1%, respectively. Different response of CFRP laminate and adhesive layer to the moisture determined the failure mode of the adhesive-bonded joints. Suitable match of CFRP laminate and adhesive was very important to make the failure mode of the joint under control.
- Citation
- Xu, X., Yu, H., and Xing, P., "Moisture absorption behavior and hygrothermal aging life prediction for CFRP adhesive-bonded joints," SAE Technical Paper 2022-01-0389, 2022, .