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International Conference on Complexity and Frontiers in Strength and Fracture ICS'01, Sendai, Japan

International Conference on Complexity and Frontiers in Strength and Fracture ICS'01, Sendai, Japan The phenomena of crack growth and fracture can occur involving practically dozens of inter-related, yet distinct mechanisms that occur over a very wide range of length scales ranging from atomistic levels to the continuum level. As a result, a plethora of theories and fracture parameters have emerged that apply to different types of fracture. The field of Fracture Mechanics has emerged over the past 40 years and has developed into a well accepted analytical tool for analyzing fracture under a variety of different conditions. Several crack tip parameters such as K, ∆K, J -Integral, ∆J -Integral, C*-Integral, Ct , (Ct )avg , and Q* parameters have been proposed and established by experimental confirmation to address different mechanisms of crack growth or fracture. These parameters have been largely successful in solving what could be considered the first order problems involving a single dominant mechanism of crack growth and fracture. By comparison, these parameters have had only limited success when more than one fracture mechanism is involved such as during complex loading and environmental conditions. This is particularly the case when the fracture/crack growth mix changes frequently due to changes in loading conditions. In this paper, the existence of a http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Strength, Fracture and Complexity IOS Press

International Conference on Complexity and Frontiers in Strength and Fracture ICS'01, Sendai, Japan

Strength, Fracture and Complexity , Volume 1 (4) – Jan 1, 2003
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Publisher
IOS Press
Copyright
Copyright © 2003 by IOS Press, Inc
ISSN
1567-2069
eISSN
1875-9262
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Abstract

The phenomena of crack growth and fracture can occur involving practically dozens of inter-related, yet distinct mechanisms that occur over a very wide range of length scales ranging from atomistic levels to the continuum level. As a result, a plethora of theories and fracture parameters have emerged that apply to different types of fracture. The field of Fracture Mechanics has emerged over the past 40 years and has developed into a well accepted analytical tool for analyzing fracture under a variety of different conditions. Several crack tip parameters such as K, ∆K, J -Integral, ∆J -Integral, C*-Integral, Ct , (Ct )avg , and Q* parameters have been proposed and established by experimental confirmation to address different mechanisms of crack growth or fracture. These parameters have been largely successful in solving what could be considered the first order problems involving a single dominant mechanism of crack growth and fracture. By comparison, these parameters have had only limited success when more than one fracture mechanism is involved such as during complex loading and environmental conditions. This is particularly the case when the fracture/crack growth mix changes frequently due to changes in loading conditions. In this paper, the existence of a

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Strength, Fracture and Complexity – IOS Press

Published: Jan 1, 2003

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