Effect of the number of layers of fiber in COPV PVC-Cotton on burst strength test

摘要

Composite overwrapped pressure vessel(COPV)is a pressure vessel wrapped or coated by composite fibers.COPV is commonly used to reduce the weight of pressure vessel.Usually COPV combine the metal liner and wrapped by the glass or the carbon fiber.How the influence of layers number to burst strength test is studied.The PVC tube is wrapped by the natural fiber(cotton)is used,and the burst test is applied.The specimens consist of four tube,a tube without wrap,a tube with one layer wrap,a tube with two layers wrap and a tube with three layers wrap.The experiment indicate that the layer effective to augment the strength of burst test until 50%,but the addition of the number of layers,did not really affect the increase in COPV burst strength test.