摘要
与地震产生机制相似,声发射源在时间及空间上也具有丛集特性。为探究声发射源在时域上丛集特性的研究方法,现从定性和定量两个角度,对声发射源丛集特性的表征方法进行探究,并对声发射源的丛集特性进行验证。理论研究表明:丛集特性主要表现为事件分布的不均匀,在定性方面,用混凝土构件在受力作用下同时长内产生的声发射事件的频数对声发射源时域丛集特性进行定性分析;在定量方面,用时间离散系数对声发射源时域丛集特性进行定量刻画。
Similar to the earthquake generation mechanism,acoustic emission sources also have clustering characteristics in time and space.In order to explore the research methods of acoustic emission source clustering characteristics in time domain,this paper explores the characterization methods of acoustic emission source clustering characteristics from both qualitative and quantitative perspectives,and verifies the clustering characteristics of acoustic emission sources.Theoretical research shows that the clustering characteristic is mainly manifested by the uneven event distribution.In qualitative aspect,the frequency of acoustic emission events generated in a long time under the force of concrete members is used to qualitatively analyze the time-domain clustering characteristic of acoustic emission sources;In the quantitative aspect,the time dispersion coefficient is used to quantitatively characterize the time-domain clustering characteristics of acoustic emission sources.
作者
吴彩星
穆江飞
严超群
WU Cai-xing;MU Jiang-fei;YAN Chao-qun(Yangling Vocational and Technical College,Yangling 712100,China)
出处
《地下水》
2023年第4期149-151,共3页
Ground water
关键词
混凝土构件
声发射事件
丛集特性
频数
时间离散系数
Concretemembers
Acoustic emission events
Clustering characteristics
Frequency
Time dispersion coefficient
