報告題目：Fracture statistics of brittle materials: Weibull distribution and beyond

報告人：Chunsheng Lu 教授

報告時間：5月29日（星期一）下午15:00-16:00

報告地點：蓮花街校區7號樓7224捷賽廳

報告人簡介：

盧春生，男，工學博士，教授，博士生導師，1993年獲中國科學院力學研究所固體力學專業博士學位，現為澳大利亞科廷大學土木與機械工程學院教授。先后于中國科學院力學研究所，日本東北大學，新西蘭維多利亞大學，澳大利亞悉尼大學等國內外研究機構和高校開展研究工作。主要從事損傷斷裂力學及其相關領域的研究工作，在分形斷裂、微細觀統計損傷力學、超硬納米涂層和熱障涂層破壞力學、納米復合材料及智能和能源材料力學等領域做出了一系列創新性的成果，得到了國際學術界的高度評價。已在Physical Review Letters, Nano Letters, Journal of the Mechanics and Physics of Solids, Journal of Geophysical Research, Nano Energy, Acta Materialia等刊物發表論文200余篇，論文被引用5800余次。

報告摘要：

The Weibull distribution based on the weakest link principle is most often assumed to describe the strength variation that occurs in fracture of brittle materials. However, taking advantage of the high-quality strength data available, there are more increasing evidences showing that the uncritical use of the Weibull distribution is questioned, especially when it is applied for the extrapolation of experimental results. In this presentation, how to correctly select an optimal distribution will be discussed, with its implications for deeper insight into the intrinsic size effect, role of disorder and fracture mechanism. It will be highlighted that, in more serious applications, the Weibull distribution should be considered as an empirical one on an equal footing with other distribution functions.

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機電工程學院
2023年5月26日