Crack Closure
Investigation of the Effect of the Roughness Induced Crack Closure on the Fatigue Crack Propagation Behavior of Hot Rolled Steels under Mixed Mode Loading Conditions
... the crack opening ratio, ...the crack closure effect is not disappearing even when U reaches U S ...the crack closure in mode I loading condition (C0) is plasticity-induced crack ...
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Study on Fatigue Crack Closure in High Strain Region of Engineering Structure (F414)
... fatigue crack propagation under a single overload in constant amplitude loading was established based on the ...the crack tip is the same as the overload effect. The fatigue crack growth rate under ...
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Cold work simulation of hole expansion process and its effect on crack closure
... retarding crack growth around a ...Moreover, crack closure analysis was performed following introduction of residual ...and crack length was also considered. Crack closure ...
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Analytical modelling of the influence of local mixed mode displacements on roughness induced crack closure
... towards crack deflections extending over several grains which may be expected to give higher crack closure (rougher macroscopic fracture ...the crack closure model described ...scale ...
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Spacetime simulation of dynamic fracture with crack closure and frictional sliding
... We adopt a sharp-interface fracture model and assume that the macroscopic response of fracture interfaces can be approximated as a linear combination of the responses of a finite set of subscale interface states, each of ...
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Effects of Crack Closure on Ultrasonic Transmission
... Data are shown for a calibration saw slot of 3.05xlO- 4m thickness, for sample 1 ~KI=9.3 MPa 1m with a slight unspecified for reasons to be discussed subsequently tensile load applied, a[r] ...
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The Effects of Crack Closure on Ultrasonic Scattering Measurements
... 4 CONCLUSIONS The derived model describes the increase in apparent fatigue crack length at higher frequencies as deduced from transmission measurements, and the decrease of the fatigue c[r] ...
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Crack Closure Behavior Under Elastic-plastic Cyclic Loading and its Effect on Faigue J-integral Range
... history of its application to fatigue crack growth problem, it is now well recognized that closure of fatigue crack has a large influence on crack growth rate and [r] ...
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Characterization of Microstructural Effects on Fatigue Crack Closure
... OVERLOAD CRACK ANALYSIS The iterative procedure used earlier for determination of the crack tip position was also applied to estimate the best values for the crack tip position as well a[r] ...
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A review of using thermoelasticity for structural integrity assessment
... at crack tips using thermoelastic stress analysis are explored, starting from selected line techniques using the Westergaard equations to the most recent methods which utilise the full array of data available ...
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Environmentally Assisted Cracking Behavior of Dissimilar Metal Weldments under High Temperature Water Conditions
... fatigue crack growth rates of the dissimilar metal weldments were observed to increase with crack extension under the nominally constant K loading ...the crack closure effect with the weld ...
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Finite Element Simulation of Short Crack Behavior under Thermo-Mechanical Loading Conditions
... and closure of a short crack an additional FE simulation has been ...short crack into the wall on the right side of the above described ...real crack growth is ...consider crack ...
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Online Full Text
... delamination crack propagation in laminated composites is ...Virtual Crack Closure Technique (VCCT), and the cohesive element technique, have been used to simulate the delamination initiation and ...
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Variable Singularity Power Wedge Element for Multilayered Composites
... virtual crack closure technique, a damage mesoscale model and comparisons were also made using stress-based ...virtual crack closure technique was carried out setting the singular behavior ...
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A New Comparative Method To Evaluate the Fracture Properties of Laminated Composite
... In this paper a new method to determine the fracture properties and strain energy release rate for carbon-polyester composite has been introduced. Fracture characteristics such as: critical stress intensity factor and ...
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Delamination Damage Propagation Studies of Laminated Composite Stiffened Panels
... modified crack-closure method (a VCCT-based method) and assumes further that stress states around the crack tip do not change significantly when the crack grows by a small amount ...
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Fracture toughness and fatigue behaviour of materials : a review
... Chapter 5 Fatigue Striation 1 Introduction 2 Mechanism of Striation 4 Crack Closure Damage Accumulation Theory Grids and Interaction of Crystallographic Cracks with Interfaces 5 Effect o[r] ...
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Fatigue Design Challenges in Aerospace Industry: Recent Linear and Nonlinear Models
... fatigue crack growth prediction for variable amplitude loading, Wheeler’s [21], Whillenborg’s [22], and Elber’s [23] models are the most known, and have been used for further improvements ...the crack ...
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Fatigue behaviour in fine grained aluminium alloys
... fatigue crack growth resistance of these materials may not benefit from intrinsic and extrinsic contributions to propagation resistance [2] due to (i) decreased slip reversibility due to the presence of the ...
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On the calculation of energy release rate in composites by Finite Elements, Boundary Elements and Analytical Methods
... transversal crack were correlated to the ones obtained by using the Virtual Crack Closure Technique (VCCT) embedded within the Boundary Element Method ...the crack length was approximately 80% ...
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