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

Article Preview

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°C) and 589K (316°C). 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.

You might also be interested in these eBooks

Info:

Periodical:

Advanced Materials Research (Volumes 415-417)

Pages:

2109-2115

Citation:

Online since:

December 2011

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2012 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] U.S. NRC: Evaluation of Potential of Pipe Break, submitted to the U.S. Nuclear Regulatory Commission Piping Review Committee, Vol. NUREG-1061(1983).

Google Scholar

[2] C.S. Seok, B.K. Kang: Evaluation of Fracture Resistance Characteristics of SA508 CL.1a Carbon Steel for Piping System, Journal of Korean Society of Mechanical Engineers, Vol.23(1999), No. 7, pp.1147-1154.

Google Scholar

[3] K.H. LEE, S.K.CHO, H.I. Kim, Y.HUH: Comparison of Static and Dynamic J-R Curves of Primary Reactant Coolant Piping Materials, submitted to International Journal of Modern Physics(2008).

Google Scholar

[4] C.S Seok: The Material's Characteristic Research for LBB, Trans. KSME, Vol.37, No.10, pp.47-51(1997), in Korean.

Google Scholar

[5] ASTM, 1992, Standard Test Method for Elevated Temperature Tension Test of Metallic Materials, ASTM E21-92.

Google Scholar

[6] Y.Huh, H.I. Kim, K.H.LEE: Evaluation of the plastic η factor considering strength mismatch in a narrow gap welding part, Journal of Korean Society of Mechanical Engineers, Vol.32(2008), No. 6, pp.512-518.

DOI: 10.3795/ksme-a.2008.32.6.512

Google Scholar