Analysis on Temperature Field at Contact Surface of Laminated CFRP Straps in Fatigue Test
FAN Lingyun1, GAO Jing1, LI Jinfeng1, ZHOU Haijun2
1 School of Architecture and Civil Engineering, Xiamen University, Xiamen 361005, Fujian, China 2 Institute of Urban Smart Transportation and Safety Maintenance, Shenzhen University, Shenzhen 518060, Guangdong, China
Abstract: The laminated CFRP strap is a continuous strap with unidirectional fibers winding in layers similar to the racing track on two separate pins. In this work, the fatigue test of CFRP straps was carried out, and the S-N curve was obtained. Based on the test results, the effects of loading rate and pin material on the straps temperature were analyzed. The results show that the overall temperature distribution of CFRP straps is symmetrical, gradually decreasing from the top of the curve to the straight part, the highest temperature occurs at the intersection between straight and curve segment. On the basis of the experiment, the temperature field model of the CFRP straps was established, and the size parameters of straps were analyzed. According to the analysis results, the influence of the pin radius and the straps thickness on the temperature distribution is similar, and therefore the curvature was used to unify the two parameters. Under the same curvature, changes in pin radius and straps thickness have no effect on temperature gradient. When the curvature increases, the overall temperature and the temperature gradient both decrease. Considering the influence of force and temperature, a reasonable curvature of about 1.5 was recommended.
范凌云, 高婧, 李锦峰, 周海俊. 层压型CFRP环带疲劳试验中接触面温度场分析[J]. 材料导报, 2022, 36(1): 20110148-7.
FAN Lingyun, GAO Jing, LI Jinfeng, ZHOU Haijun. Analysis on Temperature Field at Contact Surface of Laminated CFRP Straps in Fatigue Test. Materials Reports, 2022, 36(1): 20110148-7.
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2022, Vol. 36 
