材料科学
螺栓连接
极限抗拉强度
纤维增强塑料
接头(建筑物)
复合材料
结构工程
飞机
复合数
模数
碳纤维增强聚合物
扭矩
纤维
有限元法
工程类
物理
热力学
作者
Hua Li,Feng Guo,Chenglin Han,Wei Su,Shuqi Wen
出处
期刊:Polymers
[MDPI AG]
日期:2024-06-16
卷期号:16 (12): 1715-1715
标识
DOI:10.3390/polym16121715
摘要
Carbon fiber-reinforced plastic (CFRP) is frequently utilized as a bolted joint material in aircraft applications because of its high specific strength and specific modulus. Therefore, the performance of CFRP under −50° is significant. Here, we discuss the specimens of two bolted connections (single-nailed and double-nailed) used for static load tensile and tensile fatigue tests. We obtained the failure curves and fatigue life relationships of the specimens with two different connection methods at different tightening torques (2 N/m, 4 N/m, and 6 N/m) and low room temperatures. Our analysis reveals the effect of the bolt tightening torque and temperature on the structural mechanical properties of a CFRP bolted joint. It provides a data reference for researchers to design a composite bolted joint structure in an airplane flight environment.
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