摘要
为研究混凝土构件内声发射源在时间及空间上的分布规律,采用实验研究的分析方法,通过对混凝土短柱进行受压试验,对试验数据进行分析,绘制相关图表,对声发射源在时间及空间上的分布特征进行研究。试验分析表明:混凝土构件在受压状态下产生的声发射源在时间及空间上的分布呈现出明显的不均匀性;在试件受压初期,声发射源在时间上的分布密集段与稀疏段交替出现;声发射源在空间上的分布以试件中心为原点,以十字分布的形状向四周扩散。
In order to study the distribution of acoustic emission sources in time and space in concrete components, the analysis method of experimental research is adopted, and the distribution characteristics of acoustic emission sources in time and space are studied by compressive test of concrete short columns, the test data are analyzed, and relevant charts are drawn. The experimental analysis shows that the distribution of acoustic emission sources generated by concrete components under pressure shows obvious inhomogeneity in time and space. In the early stage of the specimen compression, the dense and sparse segments of the acoustic emission source in time alternate. The spatial distribution of the acoustic emission source takes the center of the test piece as the origin and spreads around in the shape of a cross distribution.
作者
吴彩星
穆江飞
严超群
乐磊
Wu Caixing;Mu Jiangfei;Yan Chaoqun;Le Lei(Yangling Vocational and Technical College,Yangling,China;Chongqing Jiaotong University,Chongqing,China)
出处
《科学技术创新》
2023年第3期157-160,共4页
Scientific and Technological Innovation
基金
杨凌职业技术学院院内基金计划项目“黄土边坡两种防护材料防护效应差异性研究”(ZK21-40)。
关键词
混凝土短柱
声发射
检测
concrete short column
acoustic emission
testing
