SYMPOSIA PAPER Published: 01 January 1997

Computer Simulation of Fast Crack Propagation and Arrest in Steel Plate with Temperature Gradient Based on Local Fracture Stress Criterion


A fracture mechanics model for fast crack propagation and arrest is proposed based on the local fracture stress criterion. Dynamic fracture toughness (KD) for a propagating crack is calculated as a function of crack velocity and temperature. The model is extended to incorporate the effect of unbroken ligament (UL) formed near the plate surfaces and crack-front-tunneling. The model simulates acceleration, deceleration and arrest of a crack in a ESSO or a double-tension test plate with temperature-gradient. Calculated arrested crack lengths compare well with experimental results. It is shown that the conventional crack arrest toughness calculated from applied stress and arrested crack length depends on temperature-gradient and the toughness is not a unique material property.

Author Information

Machida, S
Univeristy of Tokyo
Yoshinari, H
Univeristy of Tokyo
Aihara, S
Nagoya R&D Laboratories, Nippon Steel Corporation
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Developed by Committee: E08
Pages: 617–640
DOI: 10.1520/STP12333S
ISBN-EB: 978-0-8031-5374-5
ISBN-13: 978-0-8031-2410-3