EVALUATION OF THE J INTEGRAL AND THE CLADDING EFFECT OF A CRACK IN THE REACTOR PRESSURE VESSEL

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概要

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• In the pressure vessel of a reactor which is subjected to some kinds of thermal loading, the J integral for an assumed crack is evaluated using the finite element method. By considering the effect of the stainless steel cladding, the J integral is extended to the multi-phase material. First, a two dimensional crack is treated. Two cases, one a surface crack and the other an embedded one, are analyzed and the effect of the cladding on the J value is studied. It is shown that the cladding effect appears in a complicated form and it changes with the position of the crack and the cladding. Second, a athree dimensional embedded crack is analyzed. Thre three dimensional J integral is evaluated around a crescent type crack, and the result is compared with that of a two dimensional analysis. It is concluded that two dimensional modelling is enough to discuss the cladding effect in the case considered in this paper.

• 一般社団法人日本機械学会の論文

著者

• Miyamoto Hiroshi

  Science Univ. Of Tokyo

• Kikuchi Masanori

  Science Univ. Of Tokyo

関連論文

• The Thickness Effects of the CCT Specimen : 2nd Report, Examination of Thickness Effects by Means of Recrystallization Method and Fracture Toughness Test
• EVALUATION OF THE J INTEGRAL AND THE CLADDING EFFECT OF A CRACK IN THE REACTOR PRESSURE VESSEL
• J INTEGRAL EVALUATION OF A CRACK IN THE PRESSURE VESSEL UNDER THERMAL TRANSIENT LOADING
• Foreword
• A Study of the Process Zone at the Crack Tip (Behaviour of the Voids at the Crack Tip of an Aluminum Alloy Specimen) : Solid-Mechanics, Strength of Materials

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