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Complex stress intensity factors evaluated by pseudocaustics
Engineering Fracture Mechanics, 1992Abstract A pseudocaustic is an illuminated pair of lines created by the same procedure as the caustics, but from reflections along any line on the boundaries or inside a stress field. The pair of pseudocaustics formed by a straight line, either traced and indexed at the vicinity of the tip of a crack or projected on the surface of the specimen by a ...
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Complex stress-intensity factors at bifurcated cracks
Journal of the Mechanics and Physics of Solids, 1972Thin plates made of Perspex and containing a long transverse internal crack, side-branched at one of its ends, were subjected to tension at infinity. The thickness variation of the plates was depicted by the reflected shadow method. According to this method the absolute retardations of the light rays impinging normally on the plates were partly ...
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COMPLEX STRESS INTENSITY FACTORS FOR A CRACK IN A BIMATERIAL BRAZILIAN TEST SPECIMEN
Fatigue & Fracture of Engineering Materials & Structures, 1994Abstract— The stress field in front of a crack tip lying in a plane bimaterial interface is always of a complex nature. The stress intensity factor characterising its asymptotic variation is therefore a complex number and its assessment from a numerical calculation requires the separation of the particular loading modes by an appropriate method.
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International Journal for Numerical Methods in Engineering, 2021
AbstractIn this article, the boundary element method is implemented for solving linear elastic fracture mechanics problems, using new complex Fourier shape functions which include constant and linear complex Fourier shape functions. They, unlike the classic Lagrange shape functions, can satisfy the exponential and trigonometric function fields in ...
Akram Aghamolaei +2 more
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AbstractIn this article, the boundary element method is implemented for solving linear elastic fracture mechanics problems, using new complex Fourier shape functions which include constant and linear complex Fourier shape functions. They, unlike the classic Lagrange shape functions, can satisfy the exponential and trigonometric function fields in ...
Akram Aghamolaei +2 more
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Stress Intensity Factors for Complex-Cracked Pipes Based on Elastic Finite Element Analyses
Volume 6A: Materials and Fabrication, 2015A complex crack is one of severe crack that can occur at the dissimilar metal weld of nuclear piping. A relevant fracture mechanics assessment for a pipe with a complex crack has become interested in structural integrity of nuclear piping. A stress intensity factor is not only an important parameter in the linear elastic fracture mechanics to predict ...
Jae-Uk Jeong +3 more
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2000
Fatigue cracks in shot-peened and case-hardened notched machine components are subjected to stress fields induced by the external load and residual stresses resulting from the surface treatment. Both stress fields are characterized by nonuniform distributions, and handbook stress intensity factor solutions are in such cases unavailable, especially in ...
G Glinka, W Reinhardt
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Fatigue cracks in shot-peened and case-hardened notched machine components are subjected to stress fields induced by the external load and residual stresses resulting from the surface treatment. Both stress fields are characterized by nonuniform distributions, and handbook stress intensity factor solutions are in such cases unavailable, especially in ...
G Glinka, W Reinhardt
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2011
Damage tolerance analysis (DTA) of complex aircraft structures requires stress intensity correction factor (β-factor) solutions that cannot be accurately or practically determined with handbook solutions. Typically, these β-factors can be related to the load transfer to adjacent structures and to irregular geometries.
Renaud, G., Liao, M., Bombardier, Y.
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Damage tolerance analysis (DTA) of complex aircraft structures requires stress intensity correction factor (β-factor) solutions that cannot be accurately or practically determined with handbook solutions. Typically, these β-factors can be related to the load transfer to adjacent structures and to irregular geometries.
Renaud, G., Liao, M., Bombardier, Y.
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Optics and Lasers in Engineering, 2012
Abstract This paper addresses the problem of determination of the Stress Intensity Factor (SIF) for a crack in a bimaterial interface from the displacement fields obtained through Digital Image Correlation (DIC). Center cracked and edge cracked bimaterial specimens, as well as asymmetric 4-point bend specimens are tested and displacements are ...
Chaitanya K. Desai +2 more
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Abstract This paper addresses the problem of determination of the Stress Intensity Factor (SIF) for a crack in a bimaterial interface from the displacement fields obtained through Digital Image Correlation (DIC). Center cracked and edge cracked bimaterial specimens, as well as asymmetric 4-point bend specimens are tested and displacements are ...
Chaitanya K. Desai +2 more
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Fatigue & Fracture of Engineering Materials & Structures, 2004
ABSTRACTLinear elastic fracture mechanics (LEFM) is the science frequently used to understand the stable and progressive fatigue crack growth that often occurs in engineering components under varying applied stress. The stress intensity factor (SIF) is its basis and describes the stress state at the crack tip.
F. P. BRENNAN, L. S. TEH
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ABSTRACTLinear elastic fracture mechanics (LEFM) is the science frequently used to understand the stable and progressive fatigue crack growth that often occurs in engineering components under varying applied stress. The stress intensity factor (SIF) is its basis and describes the stress state at the crack tip.
F. P. BRENNAN, L. S. TEH
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