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http://dx.doi.org/10.3795/KSME-A.2013.37.6.753

Estimation of Elastic Plastic Behavior Fracture Toughness Under Hydrogen Condition of Inconel 617 from Small Punch Test  

Kim, Nak Hyun (Dept. of Mechanical Engineering, Korea Univ.)
Kim, Yun Jae (Dept. of Mechanical Engineering, Korea Univ.)
Yoon, Kee Bong (Dept. of Mechanical Engineering, Chung Ang Univ.)
Ma, Young Hwa (Dept. of Mechanical Engineering, Chung Ang Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.37, no.6, 2013 , pp. 753-760 More about this Journal
Abstract
The hydrogen embrittlement of metallic materials is an important issue from the viewpoint of structural integrity. In this regard, the estimation of mechanical properties and fracture toughness under hydrogen conditions provides very important data. This study provides an experimental validation of the approach for simulating the small punch of Inconel 617 using finite element damage analysis, as recently proposed by the authors, and applies an inverse method for the determination of the constitutive tensile behavior of materials. The mechanical properties obtained from the inverse method are compared with those obtained from the tensile test and validated. The mechanical properties and fracture toughness are predicted by using the inverse method and finite element damage analysis.
Keywords
Ductile Fracture Simulation; Experimental Validation; Finite Element Analysis; Small Punch; Hydrogen Embrittlement;
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