Models for Microcracks Extension and Damage Evolution Based on Acoustic Emissions
In the paper, aiming to build models of microcracks extension and damage evolution in the phase of microcracks evolution based on number series of microdefects nucleation, we firstly built a relation formula between accumulated number series of microdefects nucleation and microcracks size, which we called the crack growth model(CGM), by means of the fractal statistical method. Then, we set up a damage evolution model based on growing microcrack size which is determined by microdefects nucleation number series, which we called the damage evolution model(DEM).The statistical analysis on the microcracks evolution in a gradually fractured rock plate shows that the predictive crack size growth by CGM and damage evolution by DEM are in good accord with the measured values. Based on the fact that a microdefect nucleation is accompanied with a acoustic emission(AE), the two models maybe become good methods to predict microcrack growth and damage evolution by use of AE series.
fractal microcrack rough surface microdefect damage evolution acoustic emission
Wang Li MAO Yuanchun Ye Jinsheng Yang Jianhui Rui Dahu
Department of Civil Engineering of Henan Polytechnic University,Jiaozuo,454000,China
国际会议
北京
英文
1-7
2013-06-16（万方平台首次上网日期，不代表论文的发表时间）