Crack paths under mixed mode loading [PDF]
, 2008 Long fatigue cracks that initially experience mixed mode displacements usually change direction in response to cyclic elastic stresses. Eventually the cracks tend to orient themselves into a pure mode I condition, but the path that they take can be ...
Andersson +35 more
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A hybrid technique for residual stress analysis through stress function fitting
Latin American Journal of Solids and StructuresThis work presents a hybrid experimental theoretical technique for residual stresses analysis of mechanical components. It was used the blind hole technique along with the Electronic Speckle Pattern Interferometry (ESPI) method and Airy stress functions ...
Marco Antonio Martins Cavaco
doaj +1 more source
EPJ Web of Conferences, 2010 The hole-drilling strain gauge technique has become a standard method in measuring residual stresses [1]. Moiré interferometry combining hole-drilling method opens additional opportunity for full-field residual stress measurement using optical ...
Lyu B.I., Aoh J.N.
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Napäťová a deformačná analýza metódou ESPI s využitím upínacieho prípravku pre šmykové skúšky Arcan [PDF]
, 2013 This article describes the possibilities of utilizing of ESPI - Electronic Speckle Pattern Interferometry for system Q-100 application for strain and stress analysis on surface of flat specimens predominantly loaded by shear deformation.
Kalina, Matúš +2 more
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Comparison of shearography to scanning laser vibrometry as methods for local stiffness identification of beams [PDF]
, 2013 Local stiffness of Euler–Bernoulli beams can be identified by dividing the bending moment of a deformed beam by the local curvature. Curvature and moment distributions can be derived from the modal shape of a beam vibrating at resonance. In this article,
Gu, Jun +5 more
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Measurement of heat treatment induced residual stresses by using ESPI combined with hole-drilling method [PDF]
China Foundry, 2010 In this study, residual stresses in heat treated specimen were measured by using ESPI (Electronic Speckle-Pattern Interferometry) combined with the hole-drilling method.
Jie Cheng, Si-Young Kwak, Ho-Young Hwang
doaj
Nondestructive Evaluation of Solids Based on Deformation Wave Theory
Applied Sciences, 2020 The application of a recent field theory of deformation and fracture to nondestructive testing (NDT) is discussed. Based on the principle known as the symmetry of physical laws, the present field theory formulates all stages of deformation including the ...
Sanichiro Yoshida +2 more
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Experimental study on fracture behavior of pre-notched mortar beams using ESPI technique [PDF]
, 2011 Electronic Speckle Pattern Interferometry (ESPI) technique is of high sensitivity and can provide full-field surface deformation. This paper introduces the application of ESPI technique to measure the surface deformation of pre-notched mortar beams in ...
Chen, H, Su, RKL
core
Determination of fracture mechanics parameters on a base of local displacement measurements [PDF]
, 2013 New experimental technique for a determination of the stress intensity factor (SIF) and T-stressvalues is developed and verified. The approach assumes combining the crack compliance method and opticalinterferometric measurements of local deformation ...
Eleonsky, S. I. +2 more
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Localization phenomenon investigation on Smated stainless samples by speckle interferometry
EPJ Web of Conferences, 2010 In-plane Electronic Speckle Pattern Interferometry (ESPI) has been successfull y used during tensile tests on SMA-treated (Surface Mechanical Attrition Treatment) and as received 316L stainless steel in order to measure the strain rate field.
François M., Montay G., Petit J.
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