Błażejewski Wojciech, Barcikowski Michał, Lubecki Marek, Stabla Paweł, Bury Paweł, Stosiak Michał, Lesiuk Grzegorz
Faculty of Mechanical Engineering, Wroclaw University of Science and Technology, PL 50-370 Wroclaw, Poland.
Materials (Basel). 2021 Feb 22;14(4):1041. doi: 10.3390/ma14041041.
Although cooling at ambient temperature is widely used and is said to be safe and convenient, faster cooling may have an influence not only on the time of the manufacturing process but also on the mechanical response, especially the residual stress. The study aimed to investigate the influence of the cooling rate after curing on the mechanical response of filament-wound thick-walled carbon fiber reinforced polymer (CFRP) rings. Three cooling rates were taking into consideration: cooling with the oven, at room temperature, and in the water at 20 °C. The splitting method was used to examine the residual strains. In the radial compression test, the mechanical response was investigated between the rings with different cooling regimes. The FEM analysis of the compression test in elastic range was also performed. Both the splitting method and the radial compression test showed no significant difference in the mechanical response of the CFRP rings. The presented results showed that the fast-cooling rate slightly decreases the mechanical performance of the filament-wound rings.
尽管在环境温度下冷却被广泛使用，且据说安全方便，但更快的冷却不仅可能影响制造过程的时间，还可能影响机械响应，尤其是残余应力。该研究旨在探讨固化后冷却速率对纤维缠绕厚壁碳纤维增强聚合物（CFRP）环机械响应的影响。考虑了三种冷却速率：在烘箱中冷却、在室温下冷却以及在20℃的水中冷却。采用劈裂法检测残余应变。在径向压缩试验中，研究了不同冷却方式的环之间的机械响应。还进行了弹性范围内压缩试验的有限元分析。劈裂法和径向压缩试验均表明CFRP环的机械响应无显著差异。给出的结果表明，快速冷却速率会略微降低纤维缠绕环的机械性能。
