Modification of the FRI Crack Growth Model Formulation from a Mathematical Viewpoint

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概要

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• The FRI model of crack growth, which incorporates mechanical properties into the slip oxidation mechanism of crack advance, is an extension of the well-known Ford-Andresen model. When the exponent of the oxidation current decay curve is set close to 1, however, the FRI model gives an infinite crack growth rate. Here, the oxidation decay curve integral is revised to eliminate this divergence, and modified crack growth rate equations are derived. Also presented here is a procedure for determining the oxidation current parameters from the curve-fitting to measurements of crack growth rate. Parameter value determination and crack growth calculations are illustrated for cold-worked Type 316L stainless steel.

• 一般社団法人 日本原子力学会の論文
• 2009-03-01

著者

• Koshiishi Masato

  Hitachi-ge Nuclear Energy Ltd.

• HASHIMOTO Tsuneyuki

  Materials Research Laboratory, Hitachi, Ltd.

• Hashimoto Tsuneyuki

  Materials Research Laboratory Hitachi Ltd.

関連論文

• Modification of the FRI Crack Growth Model Formulation from a Mathematical Viewpoint

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