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声发射技术在近三十年来不断发展和逐步完善中,近来广泛地用于材料研究、材料的无损评价,寿命预测和结构运行时的监测等等。声发射信号与材料的断裂过程有直接关系,可以研究材料的断裂机理、裂纹发展的速度,区分材料缺陷的有害程度、判断缺陷发生的部位。在研究了纤维复合材料的声发射特性后发现它与均质和多晶材料的特性不同,开展该材料的
Acoustic emission technology in the past 30 years of continuous development and gradually improve, recently widely used in material research, nondestructive material evaluation, life prediction and structural operation monitoring and so on. Acoustic emission signal and the material has a direct relationship between the fracture process, you can study the fracture mechanism of materials, the speed of crack development, the distinction between the harmfulness of material defects to determine the site of defects occurred. After studying the acoustic emission characteristics of fiber composites, it was found that the properties of the composites were different from those of homogeneous and polycrystalline materials.