Method of Constraint Loss Correction for CTOD Fracture Toughness under Welding Residual Stress Field

Abstract:

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This paper studied the assessment method for welding residual stress effects and constraint loss effects on brittle fracture of structural component subjected to membrane stress. The methodology of CTOD fracture toughness correction for welded joints is proposed from lower to upper ductile-brittle transition temperature region. The methodology is based on the tensile plastic zone size criterion and the equivalent CTOD ratio derived from the Weibull stress criterion. It has been found that the proposed methodology has given the reasonable fracture assessment results.

Info:

Periodical:

Materials Science Forum (Volumes 638-642)

Main Theme:

Edited by:

T. Chandra, N. Wanderka, W. Reimers , M. Ionescu

Pages:

3931-3936

DOI:

10.4028/www.scientific.net/MSF.638-642.3931

Citation:

Y. Yamashita and F. Minami, "Method of Constraint Loss Correction for CTOD Fracture Toughness under Welding Residual Stress Field ", Materials Science Forum, Vols. 638-642, pp. 3931-3936, 2010

Online since:

January 2010

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$35.00

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