摘要
本文缠绕成型130 L复合材料气瓶,进行了充放气疲劳及水压爆破试验,并且采用声发射的检测方法对充放气疲劳试验过程进行了监控。试验结果表明:充放气疲劳过程中复合材料气瓶除了承受内压载荷作用,同时还承受由于充放气导致的温度变化产生的热应力,内压以及热应力对气瓶的损伤较大,会导致气瓶疲劳后的爆破压强下降。
In this study,a filament wound composite pressure vessel was subjected to be cyclic loading of both pressure and temperature by atmospheric pressure test compared with hydrostatic test to investigate its fatigue behavior and burst characteristics. Acoustic emission dates were collected from the two types of test. The results shown that in the course of the atmospheric fatigues pressure test, large temperature changes accompanied by internal pressure could occur which directly led to thermo-mechanical cyclic loading of the vessel. These thermo-mechanical stresses could stimulate more damages to the vessel than that by hydraulic fatigues pressure test, which led to degrade final burst pressure.
出处
《纤维复合材料》
CAS
2015年第1期22-25,共4页
Fiber Composites
关键词
复合材料气瓶
声发射
气压
疲劳
composite pressure vessels
acoustic emission
atmospheric pressure
fatigue
