钢轨胶结剪切强度的声发射监测  

Glue Bonding Shear Strength Monitoring by Acoustic Emission Qu Yikun

作　　者：曲义坤[1] 李惠彬[2] 

机构地区：[1]清华大学核能技术研究院 [2]中国矿业大学矿山机械工程系

出　　处：《中国矿业大学学报》1996年第2期63-66,共4页Journal of China University of Mining & Technology

摘　　要：研究了胶结剪切强度的声发射特性，发现用声发射可以观察断裂的详细过程：从加载开始就出现声发射，说明较弱的连结点已开始断裂；极大的声发射振铃增长，表明胶结产生了破坏；断裂的声发射信号幅值大；从声发射图上所得的最大载荷低于从Ｘ－Ｙ函数记录仪所得的；The acoustic emission(AE) features during glue bonding shear strength tests are presented in this paper. The fracturing process can be observed in detail from AE: from the start of loading the emitted AE energy indicates that some weak bonding points fail to support the loading; a very big AE counts increment signifies the coming failure; the fracturing AE signals are of high amplitude. The maximum load read from AE graph is a little lower than that from the usually used X Y recorder. The fracturing message carried in AE can be applied in evaluating the quality of gluing connection.

关 键 词：矿山运输 声发射 胶结强度 钢轨连接 钢轨 

分 类 号：TD524.1[矿业工程—矿山机电]