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Journal of Shanghai University >

2023 , Vol. 29 >Issue 4: 786 - 795

DOI: https://doi.org/10.12066/j.issn.1007-2861.2429

Experimental analysis based on three fracture toughness test methods 

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  • 1. Shanghai Nuclear Engineering Research and Design Institute Co., Ltd., Shanghai 200233, China; 2. Southwest Jiaotong University, Chengdu 610031, Sichuan, China; 3. Nuclear and Radiation Safety Center of the Ministry of Ecological Environment, Beijing 100082, China

Received date: 2021-11-12

  Online published: 2023-09-01

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Abstract

The theories of fracture toughness measurement for three J-integral test methods, including unloading compliance method, normalization method and Spb separation parameter method, are summarized, and the three methods are used to test the fracture toughness of a metal material. It is found that all the three methods can obtain effective JIC values. The JIC value obtained by the unloading compliance method is slightly greater than those obtained by the other two methods, and the result obtained by the normalization method is slightly smaller than those obtained by the other two methods but close to that by the Spb separation parameter method.

Key words： fracture toughness; resistance curve; validity judgment 

Cite this article

WANG Yongdong , BAO Chen , NING Dong , WANG Yiqing , JING Yi , PU Chenghao . Experimental analysis based on three fracture toughness test methods [J]. Journal of Shanghai University, 2023 , 29(4) : 786 -795 . DOI: 10.12066/j.issn.1007-2861.2429

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