恶劣环境下纤维增强聚合物片材拉伸性能

发布时间：2018-01-28 23:33

本文关键词： CFRP片材 GFRP片材冻融循环干湿循环拉伸强度计算方法　出处：《复合材料学报》2017年07期 　论文类型：期刊论文

【摘要】：通过拉伸试验,研究了恶劣环境作用后纤维增强聚合物(FRP)片材的拉伸性能。试验参数包括恶劣环境类别和作用方式、FRP片材种类和层数。试验结果表明,常温环境下、冻融和干湿循环作用后,碳纤维增强聚合物(CFRP)片材和玻璃纤维增强聚合物(GFRP)片材的拉伸应力-应变关系近似为直线;常温环境下,CFRP片材和GFRP片材的拉伸强度和延伸率几乎不受片材层数的影响;冻融循环对GFRP片材的影响大于CFRP片材,冻融循环75次时,CFRP片材和GFRP片材的拉伸强度分别是未冻融的0.978倍和0.898倍,并且随着循环次数的增加,CFRP片材和GFRP片材拉伸强度逐渐下降;干湿循环作用对GFRP片材拉伸性能没有明显的影响。基于对有关文献及本文试验结果的分析,提出了恶劣环境下FRP片材拉伸强度的计算方法。
[Abstract]:The tensile properties of fiber reinforced polymer (FRP) sheets under harsh environment were studied by tensile test. The test parameters include the category of harsh environment and the mode of action. The experimental results show that the freeze-thaw and dry-wet cycle can be used in normal temperature. The tensile stress-strain relationship of carbon fiber reinforced polymer (CFRP) sheet and glass fiber reinforced polymer (GFRP) sheet is approximately linear. The tensile strength and elongation of GFRP sheet and CFRP sheet are almost independent of the number of sheet layers at room temperature. The effect of freeze-thaw cycle on GFRP sheet was greater than that on CFRP sheet, and 75 times of freeze-thaw cycle. The tensile strength of CFRP sheet and GFRP sheet were 0.978 times and 0.898 times of that of non-freeze-thaw, respectively, and the tensile strength increased with the increase of cycle times. The tensile strength of CFRP sheet and GFRP sheet decreased gradually. The effect of dry and wet cycling on the tensile properties of GFRP sheet is not obvious. Based on the analysis of relevant literatures and the experimental results in this paper, the calculation method of tensile strength of FRP sheet under harsh environment is put forward.
【作者单位】：郑州大学;河南工程学院;武汉大学;
【基金】：国家自然科学基金(50579068)
【分类号】：TB332;TQ327
【正文快照】： 网络出版地址:www.cnki.net/kcms/detail/11.1801.TB.20161024.0833.006.html引用格式:于爱民,李趁趁,高丹盈,等.恶劣环境下纤维增强聚合物片材拉伸性能[J].复合材料学报,2017,34(7):1496-1504.YU Aimin,LI Chenchen,GAO Danying,et al.Tensile properties of fiber reinforce

【相似文献】