Predictive models for stable tearing crack growth due to overloading in fatigue

2012 ◽  
Vol 36 (6) ◽  
pp. 492-503
Author(s):  
M. F. Ab RAHMAN ◽  
G. CLARK ◽  
C. H. WANG
Keyword(s):  
Crack Growth ◽  
Predictive Models ◽  
Stable Tearing

ON FATIGUE CRACK GROWTH AND STABLE TEARING

1988 ◽  
Vol 11 (1) ◽  
pp. 31-43 ◽  
Author(s):  
B. K. Neale ◽  
E. K. Priddle
Keyword(s):  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Crack Growth ◽  
Stable Tearing

Simulation of stable tearing crack growth events using the cohesive zone model approach

2013 ◽  
Vol 99 ◽  
pp. 223-238 ◽  
Author(s):  
Xin Chen ◽  
Xiaomin Deng ◽  
Michael A. Sutton
Keyword(s):  
Crack Growth ◽  
Cohesive Zone ◽  
Cohesive Zone Model ◽  
Zone Model ◽  
Stable Tearing ◽  
Model Approach

Crack Initiation and Propagation in Static Loaded Fracture Mechanics Tests in Steels Containing Atomic Hydrogen

2020 ◽  
Author(s):  
Philippa L. Moore ◽  
Menno Hoekstra ◽  
Alex Pargeter
Keyword(s):  
Fracture Toughness ◽  
Fracture Mechanics ◽  
Crack Initiation ◽  
Plastic Zone ◽  
Crack Growth ◽  
Crack Extension ◽  
Low Alloy Steels ◽  
Ductile Tearing ◽  
Initiation Fracture Toughness ◽  
Stable Tearing

Abstract Hydrogen is well known to have a detrimental influence on the ductility of low alloy steels, reducing the fracture toughness. Standard test methods to characterize fracture toughness of steels in terms of ductile tearing resistance curves have not been developed to account for any hydrogen-driven contribution to the crack extension, Δa. Simply plotting J or CTOD against Δa is not necessarily appropriate for defining the initiation fracture toughness for tests performed in a hydrogen-charging environment. This paper explores a method to further analyse experimental data collected during fracture toughness tests, which allows the contribution of plasticity (i.e. when blunting precedes ductile tearing) to be considered separately from the initiation of crack extension (which could be by stable tearing and/or by hydrogen-driven crack extension). The principle is based on the assumption that a crack growing by a hydrogen-driven mechanism in a quasi-static fracture mechanics test performed in environment may not be associated with significant ductility in the plastic zone (which would accompany crack growth by stable tearing). The analytical method presented in this paper compares the different points of deviation from linear behavior of the components of J, to isolate the effects of ductility within the plastic zone from pure crack extension. In this way, the point of crack initiation can be defined in order to determine the relevant initiation fracture toughness; whether by blunting and stable tearing, or by hydrogen-driven crack growth. This approach offers a screening method which is illustrated using examples of fracture mechanics specimens tested in environments of varying severity (air, seawater with cathodic protection, and sour service). This method can be used to identify the relevant definition of initiation fracture toughness while allowing for a combination of ductile tearing, hydrogen-driven crack extension, or both, to be present during the test.

Simulation of stable tearing crack growth events using the CZM approach with an explicit solver

2014 ◽  
Vol 81 ◽  
pp. 32-37 ◽  
Author(s):  
Xin Chen ◽  
Xiaomin Deng ◽  
Michael A. Sutton
Keyword(s):  
Crack Growth ◽  
Explicit Solver ◽  
Stable Tearing

scholarly journals Prediction of stable tearing in fatigue crack growth

2010 ◽  
Vol 2 (1) ◽  
pp. 1515-1521
Author(s):  
Mohd Fairuz Ab Rahman ◽  
Reza D. Mohammed ◽  
Xiaobo Yu ◽  
Qianchu Liu ◽  
Graham Clark
Keyword(s):  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Crack Growth ◽  
Stable Tearing

Experiments, Analysis and Simulation of Mixed Mode Ductile Fracture

2005 ◽  
Author(s):  
Xiaomin Deng ◽  
Michael A. Sutton
Keyword(s):  
Ductile Fracture ◽  
Crack Growth ◽  
Mixed Mode ◽  
Research Effort ◽  
Ductile Failure ◽  
Stress Constraint ◽  
Crack Growth Simulation ◽  
Crack Tunneling ◽  
2D And 3D ◽  
Stable Tearing

This paper provides a review of findings of a comprehensive research effort by the authors and collaborators in the area of experiments, analysis and simulation of mixed-mode ductile fracture. Topics include mixed-mode Arcan stable tearing tests, the mixed-mode CTOD fracture criterion and its basis, normalization of ductile crack tip fields, ductile failure envelope, crack tunneling and slanting, effects of stress constraint, custom 2D and 3D mixed-mode crack growth simulation codes, and simulations of mixed-mode stable tearing crack growth tests.

A study of some issues in stable tearing crack growth simulations

1999 ◽  
Vol 64 (3) ◽  
pp. 291-304 ◽  
Author(s):  
Xiaomin Deng ◽  
J.C. Newman
Keyword(s):  
Crack Growth ◽  
Stable Tearing
Sign in / Sign up

Export Citation Format

Share Document