Video/animation icon  Crack tip strain field around a growing crack: 3D simulation

 
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Resource type: Video/animation
Description: This resource is a video, illustrating how the stress field around a crack grows with the length of the crack, presented as a three-dimensional plot. It was obtained by stitching together maps of the surface temperature (amplitude) captured with an infra-red camera during cyclic loading; and the temperature amplitude is directly proportional to the amplitude of the first stress invariant (sum of principal stresses), which drives the crack forward, based on the classical Paris law. So the crack growth will get faster and faster as the crack gets longer and eventually become unstable, leading to rupture. In-house software (FATCAT) was used to generate quantitative data rapidly from images generated by commercially available instrumentation.
Keywords: polymers • thermoplastics • properties • SubsTech • dataset
Categories: Science approaches > Deformation & failure > Fracture
Science approaches > Deformation & failure > Fatigue
Science approaches > Modelling & simulation
Testing, analysis & experimentation > Mechanical testing
Created by: Francisco A. Diaz, University of Jaen, Spain
John R. Yates, School of Mechanical, Aerospace and Civil Engineering, The University of Manchester
Eann Patterson, School of Engineering, The University of Liverpool
License: This resource is released under the Creative Commons Attribution Non-Commercial No Derivatives license (3.0 Unported).
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Date created: 25 June 2003
Date added: 29 March 2011
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Resource ID: 3600