华东交通大学学报2025，Vol.42Issue(5)：104-112,9.
CFRP层合板火烧后拉伸行为及失效机理研究
Experimental Investigation on Tensile Behavior and Failure Mechanism of CFRP Laminates After Fire Exposure
摘要
Abstract
To investigate the tensile behavior and failure mechanism of carbon fiber reinforced polymer(CFRP)composites after fire exposure,tensile tests were conducted on three different layups of CFRP laminates subject-ed to fire exposure.Thermal stability was monitored using an infrared thermal imager,followed by microstructur-al analysis via SEM to investigate the effects of burn temperature and fiber lay-up on the pyrolysis behavior of CFRP laminates.Finally,their tensile strength and failure mechanisms were evaluated through load-displace-ment curves,stress-strain curves,and failure morphologies.The results show that CFRP laminates subjected to high-temperature exposure exhibit significant pyrolysis and mass loss,and their damage mechanisms include ma-trix decomposition,fiber/matrix interface debonding,and interlaminar delamination.Compared to 400℃,speci-mens exhibit a twofold increase in mass loss and more severe damage at 600℃.A similar trend in curves and a significant difference in strength are found in±45°laminates,whose mechanical performance depends greatly on the resin properties and fiber/matrix adhesion.The ranking of tensile strength for specimens after fire exposure is as follows:0°laminate,0°/90°laminate,and±45°laminate.Furthermore,the 0°laminate experiences the small-est degradation rate.关键词
CFRP/铺层角度/热损伤/静态拉伸/失效机理Key words
CFRP/fiber layup/thermal damage/static tensile test/failure mechanisms引用本文复制引用
雷祖祥,张和,潘锐,王李福..CFRP层合板火烧后拉伸行为及失效机理研究[J].华东交通大学学报,2025,42(5):104-112,9.基金项目
国家自然科学基金面上项目(12172130) （12172130）
江西省自然科学基金重点项目(20232ACB201007) （20232ACB201007）
