Application of stepped loading mode in acoustic emission testing of composite container

Research on the application of stepped loading mode in acoustic emission testing of composite container was briefly introduced. The analysis shows that, the changing process of Felicity ratio at every pressure step can describe the evolutionary process of the container under loading. The changing trends of AE signal for container under stepped load mode are consistent with that of container under boosted load mode. Damage degrees are the same in these loading modes. These research results could provide basis for the quality evaluation of composite container.