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引言近二十年来,开展声发射研究工作的国家和地区越来越多,应用的领域越来越广,包括声发射现象的微观机理,材料的选择和评价,加工过程的控制,结构件的检验及运行的安全监控,产品质量的控制和地壳微震活动的研究。声发射现象是自然界的普遍现象.地震、锡鸣就是其例。第一个对声发射现象展开系统研究的是德国科学家 Kaiser 于1950年进行的。但大规模的研究、应用工作还是自六十年代在美国开始的。
Introduction In the past 20 years, more and more countries and regions have carried out acoustic emission research work, and their fields of application are more and more widely used, including the microscopic mechanism of acoustic emission phenomena, the selection and evaluation of materials, the control of the process, Inspection and operation of safety monitoring, product quality control and crustal microseismic activity research. Acoustic emission phenomenon is a common phenomenon in nature.Seismic, tin is an example. The first systematic study of acoustic emission was conducted by German scientist Kaiser in 1950. However, large-scale research and application work started in the United States in the 1960s.