复合材料气瓶铝内衬缺陷对疲劳及爆破性能的影响

研究了复合材料气瓶在生产过程中金属内衬存在的凹坑、裂纹以及腐蚀等的缺陷类型,并且对存有以上缺陷类型的复合气瓶进行疲劳及爆破实验,研究其对气瓶的性能影响.结果表明:金属内衬缺陷的存在会使得气瓶在承受内压载荷的过程中,金属内衬在缺陷位置出现应力集中,提前出现裂纹的扩展,使得金属内衬失效,无法充分发挥复合材料层高强度的优势,使得复合材料气瓶的疲劳失效次数及爆破强度大大降低,影响最终的使用性能.

Effect of Aluminum Liner Vice to Fatigue and BurstCharacteristics of Composite Pressure Vessels

This paper was aimed at the investigation of effect of the aluminum liner vices to the fatigue and burst
characteristics of the filament winding composite pressure vessels. These vices included hollowness, corrosion and
cracks on the metal liner. The results shown that the vices exited on the metal liner could lead to stress concentration,
which brought on cracks spreading along these vices. So the invalidation of the metal liner was advance of the composite.
All of those could stimulate more damages to the vessels, which lead to degrade final burst pressure and fatigue
cycling. These vices hereby gave rise to a great effect on final properties of the composite pressure vessels.