声发射检测技术在FRP复合材料容器检测中的应用研究

Study on Acoustic Emission Detection Technology of Fiber Reinforced Plastic Pressure Vessel

目前声发射检测技术已经成熟应用于金属压力容器检测中,但针对纤维增强复合材料(FRP)压力容器检测技术目前尚未成熟,由于纤维增强复合材料具有各向异性特点,这给缺欠定位和性质分析带来一定困难。本文提出一种利用声衰减对声发射源进行源定位的方法,采用断铅方式模拟源进行试验测量,试验结果表明这种源定位方法具有可行性,为FRP复合材料容器声发射检测技术研究提供了一定的参考价值。

At present,acoustic emission testingtechnology has been applied to the detection of metal pressure vessels.However,the testing technology of FRP pressure vessel is not mature yet,becausethe anisotropy of FRPmakes it difficult to locate and analyze the nature of the deficiencies.A method for source localization of acoustic emission sources by using acoustic attenuationwas proposed.The lead-source analog source was used for test measurement.The source location method was feasible,which provided a certain reference value for the research of acoustic emission detection technology of FRP composite container.