Revisit on the fractal dimension in damage and fracture
The catastrophic failure of materials is a complicated process,involving the nucleation,growth and coalescence of numerous cracks with a wide range of time and length scales.In this paper,the variation of fractal dimension and entropy during a damage evolution process,especially in the vicinity of a critical failure,is revisited.The results show that,as damage evolves,both the fractal dimension and entropy of the spatial distribution of microcracks decrease.A sudden drop of fractal dimension or entropy can be viewed as a likely precursor of fracture and its implications for the prediction of natural disasters such as mining-induced rock bursts and earthquakes are discussed.
Damage evolution Fracture Fractal dimension Entropy
Chunsheng Lu
Department of Mechanical Engineering,Curtin University,Perth,WA 6845 Australia
国际会议
北京
英文
1-5
2013-06-16（万方平台首次上网日期，不代表论文的发表时间）