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The initiation and progression of damage in composite overwrapped pressure vessels subjected to contact loads
Journal of Reinforced Plastics and Composites ( IF 3.1 ) Pub Date : 2021-03-12 , DOI: 10.1177/0731684421992121
Ruben AJ Weerts 1, 2 , Olivier Cousigné 2 , Klaas Kunze 2 , Marc GD Geers 1 , Joris JC Remmers 1
Affiliation  

In order to investigate the residual strength of composite overwrapped pressure vessels subjected to impact loads, an extensive experimental study has been performed. The vessels are loaded up to different mechanical work levels (quasi-static) or with various impact energies (dynamic). After loading, the emerged damage in the pressure vessel is examined using computed tomography scans. The tests of vessels up to various energies enable us to visualize the initiation and progressive growth of damage. The overall influence of the damage is subsequently quantified by means of a burst pressure test. Accordingly, the reduction of burst pressure can be used to evaluate the global severity of the observed damage in the computed tomography scan. From the experiments, it is concluded that the first failure mechanisms, that is, delaminations, do not cause a meaningful reduction of the burst pressure. Shear bands, on the other hand, which are formed thereafter, do induce a significant decrease of the residual strength.



中文翻译:

承受接触载荷的复合包裹压力容器中损坏的发生和发展

为了研究承受冲击载荷的复合包裹压力容器的残余强度,已进行了广泛的实验研究。容器被加载到不同的机械工作水平(准静态)或具有各种冲击能量(动态)的状态。装载后,使用计算机断层扫描检查压力容器中出现的损坏。对各种能量的容器进行的测试使我们能够直观地看到破坏的开始和逐步发展。随后通过爆破压力测试来量化损坏的总体影响。因此,爆破压力的降低可用于评估计算机断层扫描中观察到的损伤的整体严重性。从实验得出的结论是,第一个失效机制,即分层,不会导致爆破压力的明显降低。另一方面,其后形成的剪切带确实引起残余强度的显着降低。

更新日期:2021-03-12
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