Influence of Intersection Angle of Prefabricated Cracks on Impact Failure of Flattened Brazilian Disc

作     者：LIU Hao ZHANG Yafang YIN Guoqi OU Chenggui LU Juan HUO Yongjie 刘浩;张亚芳;YIN Guoqi;OU Chenggui;LU Juan;HUO Yongjie

作者机构：Shenzhen Municipal Design Research Institute Co.LtdShenzhen 518029China School of Civil EngineeringGuangzhou UniversityGuangzhou 510006China 

出 版 物：《Journal of Wuhan University of Technology(Materials Science)》 (武汉理工大学学报（材料科学英文版）)

年 卷 期：2021年第36卷第6期

页      面：884-890页

核心收录：

学科分类：08[工学] 081304[工学-建筑技术科学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0813[工学-建筑学] 

基　　金：Funded by the National Natural Science Foundation of China(Nos.51878190 and 51678170) 

主　　题：crack flattened brazilian disc impact load SHPB failure process acoustic emission 

摘      要：Both experimental and numerical approaches were used to study dynamic failure properties and patterns of flattened Brazilian discs,containing two prefabricated cracks intersected at a varying *** of crack initiation,propagation,and cut-through were scrutinized and influences of the intersection angle on specimen strength and acoustic emission performance were also *** primary cracks initialize near the middle or the tip points of the upper prefabricated crack,and they continue to develop along the load direction and finally cut through the *** secondary cracks could be observed in directions almost horizontal or parallel to the directions of prefabricated ***,it is found that stress intensity factor reaches its maximum for specimen with intersection angle of 0 degree.