几何尺寸与温度对CFRP筋材力学性能的影响  

EVALUATION OF GEOMETRICAL SIZE AND TEMPERATURE EFFECT ON THE MECHANICAL BEHAVIOR OF CFRP BARS

作　　者：付成龙[1] 陈利[1] 张雅璐[1] 

机构地区：[1]天津工业大学复合材料研究所,先进纺织复合材料教育部重点实验室,天津300387

出　　处：《玻璃钢／复合材料》2016年第5期74-79,共6页Fiber Reinforced Plastics/Composites

基　　金：国家高技术研究发展计划(863计划)项目(2012AA03A201)

摘　　要：为了研究高温下碳纤维增强复合材料(CFRP)筋材的力学性能,对不同直径的CFRP筋材进行了高温下的三点弯曲性能和压缩性能测试,研究了CFRP筋的破坏形态和机理,分析了直径和温度对CFRP筋材弯曲强度和压缩强度的影响。结果表明,直径对试样弯曲强度和压缩强度的影响不太明显,温度对试样弯曲强度和压缩强度的影响较大;CFRP筋材的强度保留率随着温度的升高而降低。In order to reveal the mechanical behavior of the carbon fiber reinforced polymer（ CFRP） at elevated temperatures,different diameter CFRP bars were investigated by the three-point bending test and compression test at a range of temperatures from 25℃ to 150℃. The failure mode and mechanism of CFRP bars were investigated and analyzed to elucidate the effect of diameter and temperature on bending strength and compressive strength. The results show that the influence of the diameter on the bending strength and compressive strength is not obvious. However,the bending strength and compressive strength of the specimen are greatly influenced by temperature. And the strength retention rate of the CFRP is decreased with the increase of temperature.

关 键 词：CFRP筋材 温度 弯曲性能 压缩性能 破坏机理 

分 类 号：TB332[一般工业技术—材料科学与工程]