学术报告通知 | A Simple Fracture Model for Concrete, Rock & Composites
地点：何善衡楼201会议室
时间：10:00~12:00
日期：周二，3月19日
A Simple Fracture Model for Concrete, Rock, Bone-like Bamboo Composites & Carbon Fibre Composites
Xiaozhi Hu
Winthrop Professor
Department of Mechanical Engineering
University of Western Australia
Abstract
Strength of Materials (SM) and Linear Elastic Fracture Mechanics (LEFM) are two separate mechanics studies, and only for brittle homogeneous materials. Currently, there are lots of errors and misinterpretations in material property measurements, design applications of structural integrity analysis.
A recent progress in fracture modelling at University of Western Australia (UWA) is explained. A simple closed-form non-LEFM solution is obtained, which contains only the fracture strength ft and composite structure measurement (aggregate size d max for concrete, grain size G for rock and ceramics, layer thickness for carbon fibre composites etc). Any university students and practical engineers caneasily use the fracture strength model to analyse those afore mentioned composite systems with common Excel Spreadsheets.
Probably, the most famous non-LEFM model in Civil Engineering for concrete-like materialsis the Size Effect Law (SEL) from 1984 to now. SEL contains 5 different equations with more than 20 different curve-fitting parameters. Is it possible that the single closed-form solution from UWA containing only ft and d max can do all of 5 SELs? The answer is YES!
Biographic Sketch
Dr. Xiaozhi Hu is a Winthrop Professor in the School of Mechanical & Chemical Engineering at University of Western Australia. He received his Ph.D. degree from Department of Mechanical Engineering at University of Sydney. Before joining UWA, he worked as a Post doctoral Research Fellow at Swiss Federal Institute of Technology (ETH-Zurich) and National Research Fellow at University of Sydney. He is the President of the Australian Fracture Society from 2006 - 2008, and the President of the Western Australia Chinese Scientists Association (WACSA) from 2010 - 2013. He also serves as Chief Investigator of 11 Australian Research Council (ARC) Discovery grants since1995.
Dr. Xiaozhi Hu’s major research interests are Fracture Mechanics & Advanced Materials, including Elastic/Plastic & Quasi-Brittle Fracture Modeling, Laminar carbon-fiber composites with short-fiber interfacial toughening, Joining of Carbon-fiber with Metals, Adhesive bonding and interface preparation, Size effect modeling of quasi-brittle fracture, Fatigue of welded metals, Bio-ceramics and Dental Composites, Porous bio-ceramic coatings, Indentation fracture modeling, Contact damage inlayered structures. He has published over 200 technical papers andreports, and his h-indexes in Google Scholar, Scopus and ISI (Web of Science) are 43, 35 and 33, respectively.
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