NDLI: On Evaluation of Stress Intensity Factor from In-Plane and Transverse Surface Displacements

Content Provider	Springer Nature Link
Author	He, Z. Kotousov, A.
Copyright Year	2016
Abstract	Experimental approaches to the evaluation of stress intensity factor (SIF) of through-cracked plate components are currently based on the classical plane stress (2D) asymptotic power series expansion of strains or displacements near the crack tip (Williams’ solution). Besides the plasticity effects, the quantitative evaluation of SIF has to take into account a finite domain of convergence of the series expansion as well as three-dimensional (3D) effects, which prevail in the close vicinity of the crack tip. In this paper we demonstrate and confirm that attempts to fit Williams’ solution to experimental data in the near crack tip region can provide misleading results. In addition, it is verified that the SIF can be linked to the transverse displacements in the region controlled by 3D effects, and in particular, by 3D corner singularity. Under mode I loading, the transverse displacement field in this region is uniform, and largely unaffected by the higher order terms of the asymptotic power series expansion, which make this way of the evaluation of SIF particularly attractive for experimental measurements.
Starting Page	1385
Ending Page	1393
Page Count	9
File Format	PDF
ISSN	00144851
Journal	Experimental Mechanics
Volume Number	56
Issue Number	8
e-ISSN	17412765
Language	English
Publisher	Springer US
Publisher Date	2016-06-02
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Stress intensity factor Three-dimensional effects Digital image correlation Williams’ solution Through-cracked plates Linear elastic fracture mechanics Continuum Mechanics and Mechanics of Materials Characterization and Evaluation of Materials Optics, Lasers, Photonics, Optical Devices Structural Mechanics Vibration, Dynamical Systems, Control Classical Mechanics
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Mechanical Engineering Aerospace Engineering

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