Abstract
The purpose of this study was to determine the SIF stress intensity factor by numerical modeling of a structure containing a hole playing the role of a discontinuity crack subjected to a tensile load by the J- integral approach . The energy release rate was defined by modeling the crack by a notch and a double notch starting from the hole. The results were validated experimentally by testing a transparent material using the photoelasticity technology. stress intensity factor , finite element method j-integral , two-dimensional photoelasticity measurement ,monogenic signal.DOI: http://dx.doi.org/10.5755/j01.mech.24.2.17329
Highlights
Because of their severe operational conditions, many industrial components are subject to complex combinations of mechanical constraint
The monogenic signal is two-dimensional generalization of the analytic signal proposed by Felsberg and Sommer [15]
The monogenic signal for an image is defined as the combination of the image and its Riesz transform components
Summary
Because of their severe operational conditions, many industrial components are subject to complex combinations of mechanical constraint. These combinations are at the origin of initiation and propagation of cracks in these parts, which contributes to the ruin of the structure [1]. Various analytical methods are used to study the fields of displacements, strains and stresses in the vicinity of a crack [2, 3]. There are many methods [11] to extract phases from fringe patterns such as Phase shifting technique, Wavelets demodulation [12], Spiral transform [13] and Monogenic signal [14]. The monogenic signal is characterized by its three independent local sizes as amplitude, phase vector, and orientation
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