On a case of crack path bifurcation in cohesive materials

1998 ◽  
Vol 68 (7-8) ◽  
pp. 513-523 ◽  
Author(s):  
G. Bolzon ◽  
G. Cocchetti
Keyword(s):  
Crack Path ◽  
Cohesive Materials ◽  
Path Bifurcation

Crack path bifurcation at a tear strap in a pressurized shell

2003 ◽  
Vol 81 (16) ◽  
pp. 1633-1642 ◽  
Author(s):  
Amy L. Keesecker ◽  
Carlos G. Dávila ◽  
Eric R. Johnson ◽  
James H. Starnes
Keyword(s):  
Crack Path ◽  
Path Bifurcation

Crack path bifurcation at a tear strap in a pressurized shell

2000 ◽  
Author(s):  
Amy Cowan ◽  
Carlos Davila ◽  
Eric Johnson ◽  
James Starnes, Jr.
Keyword(s):  
Crack Path ◽  
Path Bifurcation

Maximising the efficiency of Menard pressuremeter testing in cohesive materials by a cookie-cutter drilling technique

2021 ◽  
Vol 287 ◽  
pp. 106096
Author(s):  
Ali Tolooiyan ◽  
Ashley P. Dyson ◽  
Mojtaba Karami ◽  
Tahereh Shaghaghi ◽  
Mohsen Ghadrdan ◽  
...  
Keyword(s):  
Drilling Technique ◽  
Cohesive Materials

Comparison of DBEM and FEM Crack Path Predictions with Experimental Findings for a SEN-Specimen under Anti-Plane Shear Loading

2007 ◽  
Vol 348-349 ◽  
pp. 129-132 ◽  
Author(s):  
Roberto G. Citarella ◽  
Friedrich G. Buchholz
Keyword(s):  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Crack Growth ◽  
Crack Front ◽  
Crack Path ◽  
Shear Loading ◽  
Crack Growth Behaviour ◽  
3D Crack Growth ◽  
Corner Points ◽  
Experimental Findings

In this paper detailed results of computational 3D fatigue crack growth simulations will be presented. The simulations for the crack path assessment are based on the DBEM code BEASY, and the FEM code ADAPCRACK 3D. The specimen under investigation is a SEN-specimen subject to pure anti-plane or out-of-plane four-point shear loading. The computational 3D fracture analyses deliver variable mixed mode II and III conditions along the crack front. Special interest is taken in this mode coupling effect to be found in stress intensity factor (SIF) results along the crack front. Further interest is taken in a 3D effect which is effective in particular at and adjacent to the two crack front corner points, that is where the crack front intersects the two free side surfaces of the specimen. Exactly at these crack front corner points fatigue crack growth initiates in the experimental laboratory test specimens, and develops into two separate anti-symmetric cracks with complex shapes, somehow similar to bird wings. The computational DBEM results are found to be in good agreement with these experimental findings and with FEM results previously obtained. Consequently, also for this new case, with complex 3D crack growth behaviour of two cracks, the functionality of the proposed DBEM and FEM approaches can be stated.

scholarly journals Embedded flaws for crack path control in composite laminates

2014 ◽  
Vol 66 ◽  
pp. 218-226 ◽  
Author(s):  
Adrian C. Orifici ◽  
Phisit Wongwichit ◽  
Nuth Wiwatanawongsa
Keyword(s):  
Composite Laminates ◽  
Crack Path ◽  
Path Control

Crack path selection in piezoelectric bimaterials

1999 ◽  
Vol 47 (1-4) ◽  
pp. 519-524 ◽  
Author(s):  
Qing-Hua Qin ◽  
Yiu-Wing Mai
Keyword(s):  
Crack Path ◽  
Path Selection ◽  
Crack Path Selection

Crack-Path Effect on Material Toughness

1990 ◽  
Vol 57 (1) ◽  
pp. 97-103 ◽  
Author(s):  
Asher A. Rubinstein
Keyword(s):  
Crack Path ◽  
Numerical Procedure ◽  
Crack Tip ◽  
Elastic Solid ◽  
Singular Integral Equations ◽  
Length Change ◽  
Curvilinear Crack ◽  
Linear Elastic ◽  
System Of Cracks ◽  
Remote Stress

The material-toughening mechanism based on the crack-path deflection is studied. This investigation is based on a model which consists of a macrocrack (semi-infinite crack), with a curvilinear segment at the crack tip, situated in a brittle solid. The effect of material toughening is evaluated by comparison of the remote stress field parameters, such as the stress intensity factors (controlled by a loading on a macroscale), to effective values of these parameters acting in the vicinity of a crack tip (microscale). The effects of the curvilinear crack path are separated into three groups: crack-tip direction, crack-tip geometry pattern-shielding, and crack-path length change. These effects are analyzed by investigation of selected curvilinear crack patterns such as a macrocrack with simple crack-tip kink in the form of a circular arc and a macrocrack with a segment at the crack tip in the form of a sinusoidal wave. In conjunction with this investigation, a numerical procedure has been developed for the analysis of curvilinear cracks (or a system of cracks) in a two-dimensional linear elastic solid. The formulation is based on the solution of a system of singular integral equations. This numerical scheme was applied to the cases of finite and semi-infinite cracks.

scholarly journals Mechanics of the crack path formation

1991 ◽  
Vol 47 (4) ◽  
pp. 291-305 ◽  
Author(s):  
Asher A. Rubinstein
Keyword(s):  
Crack Path
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