Paper Title:

A Research on Static and Dynamic Fracture-Resistance of Welding Parts of Coolant Piping Material

Periodical Advanced Materials Research (Volumes 415 - 417)
Main Theme Advanced Materials
Edited by Jinglong Bu, Zhengyi Jiang and Sihai Jiao
Pages 2109-2115
DOI 10.4028/www.scientific.net/AMR.415-417.2109
Citation Hao Chuang Li et al., 2011, Advanced Materials Research, 415-417, 2109
Online since December, 2011
Authors Hao Chuang Li, Kwang Hyeon Lee, Jae Mean Koo, Chang Sung Seok
Keywords Dynamic Loading, Fracture Toughness, Plastic η Factor
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Abstract

Tensile and fracture toughness tests of coolant piping materials were performed at various loading rates and temperatures. The crack measurement method for coolant piping materials consisted of the unloading compliance method for quasi-static loading conditions and condition, while the electric potential drop method and the normalization method for quasi-dynamic loading conditions. Tensile and fracture toughness tests of coolant piping materials were performed at the design temperatures of the primary piping system of nuclear power plants, which are 449K (176℃) and 589K (316℃). Also, the plastic η factor considering strength mismatch of welding part was applied to the fracture toughness test results and the J-R curves by the plastic η factor considering strength mismatch of welding part was compared with the J-R curves by the plastic η factor introduced in ASTM E1820-01.