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Engineering Fracture Mechanics, 2021
Abstract This paper presents the calculation of complex stress intensity factors (K) for interface cracks in commonly used bi-material specimens subjected to arbitrary ununiform stress fields. First, detailed finite element analyses were carried out for cracks in centre-cracked plate (CCP) and single edge-cracked plate (SECP) bi-material specimens of
Wang, Xin, Chen, Kuiying
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Abstract This paper presents the calculation of complex stress intensity factors (K) for interface cracks in commonly used bi-material specimens subjected to arbitrary ununiform stress fields. First, detailed finite element analyses were carried out for cracks in centre-cracked plate (CCP) and single edge-cracked plate (SECP) bi-material specimens of
Wang, Xin, Chen, Kuiying
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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 ...
P. Theocaris
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Evaluation of Complex Stress Intensity Factors in Debonded Sandwich Beams
Mechanical Behavior of Advanced Materials, 1998Abstract The overall objective of the project are to develop methods to characterize the damage tolerance of sandwich panels with disbonded face sheets under inplane compression, and to develop a criterion for predicting the allowable disbond for a given set of inplane loading. As part of the study we characterize the mixed mode fracture
Bhavani V. Sankar +1 more
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An improved experimental evaluation of the complex stress intensity factors from isopachics
Journal of Physics D: Applied Physics, 1985The optical evaluation of the complex stress intensity factors at the tips of an inclined central crack in an infinite sheet subjected to a biaxial load at infinity was studied by using the appropriate number of higher-order terms in the series representation for stresses for the isopachic fringe pattern.
P S Theocaris, C P Spyropoulos
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On the photoelastic determination of complex stress intensity factors
Engineering Fracture Mechanics, 1979Abstract An improvement of the one-parameter extrapolation method of photoelastic determination of complex (mixed-mode) stress intensity factors at straight or curvilinear crack tips in a plane isotropic elastic medium due to Smith et al . [12, 13] can be achieved by measuring the absolute value of such a factor on the isochromatic fringes along ...
N.I. Ioakimidis, P.S. Theocaris
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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 ...
P. Theocaris
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Complex Stress Intensity Factors in Bent Plates With Cracks
Journal of Applied Mechanics, 1982The experimental method of caustics was applied to the study of asymmetric bending of isotropic cracked plates and to the determination of the complex stress intensity factors (S.I.F’s) at the crack tips. It was shown that the method of reflected caustics is convenient for detecting and evaluating both KI and KII stress intensity factors.
P. Theocaris
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