Plastic factor of front face compact tension specimens

摘要：

　　To estimate fracture toughness of irradiated material in nuclear engineering,the testing specimens with half thickness of a standard compact tension specimen are used to get the J resistance curve of materials according to Standard Test Method for Measured of Fracture Toughness (ASTM E1820).The normalization method recommended by ASTM E1820 is not directly applied in obtaining the fracture toughness of metallic materials because it does not provide the plastic factor of Front Face Compact Tension specimen with 12.5mm thickness and 25mm width (1/2 FFCT specimen).Based on the energy of J integral and the detailed finite element analysis,the plastic factor of a 1/2 FFCT specimen is presented.With the plastic factor of 1/2 FFCT,the J resistance curve of a 1/2 FFCT specimen and its fracture toughness can be obtained by Using the normalization method.

关键词： Front face compact tension Load line compact tension Plastic factor Finite element normalization method

作者: KAIKAI SHI LIXUN CAI CHEN BAO

作者单位: School of Mechanics and Engineering,Southwest Jiaotong University,Chengdu,Sichuan 610031,China

会议类型: 国际会议

会议名称: 第13届国际断裂大会(ICF2013)

会议地点: 北京

会议语种:英文

页码: 1-7

在线出版日期: 2013-06-16（万方平台首次上网日期，不代表论文的发表时间）