Genetic identification of crack-tip parameters using thermoelastic isopachics
Dulieu-Barton, J.M. and Worden, K. (2003) Genetic identification of crack-tip parameters using thermoelastic isopachics. Measurement Science and Technology, 14, (2), 176-183. (doi:10.1088/0957-0233/14/2/304).
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Description/Abstract
A curve-fitting routine based on a genetic algorithm is used to generate noise-free cardioid curves from thermoelastic data obtained from the neighbourhood of a crack-tip. The technique is benchmarked using simulated thermoelastic data. The generated cardioid curves are used to determine the stress intensity factors (SIFs) from slots and real cracks loaded in mode 1 and mixed-mode. The derived SIFs show excellent agreement with theory and confirm the validity of the approach. The curve-fitting approach allows more information to be obtained from the thermoelastic data than previous analysis routines and will provide a basis for further development of thermoelastic stress analysis for application in crack-tip stress studies.
| Item Type: | Article |
|---|---|
| ISSNs: | 0957-0233 (print) |
| Related URLs: | |
| Keywords: | thermoelastic stress analysis, stress intensity factors, crack-tip parameters, genetic algorithm, curve-fitting |
| Subjects: | T Technology > TJ Mechanical engineering and machinery Q Science > QC Physics |
| Divisions: | University Structure - Pre August 2011 > School of Engineering Sciences |
| Item ID: | 22235 |
| Date Deposited: | 17 Mar 2006 |
| Last Modified: | 02 Mar 2012 13:26 |
| Contributors: | Dulieu-Barton, J.M. (Author) Worden, K. (Author) |
| Date: | 2003 |
| Status: | Published |
| Contact Email Address: | janice@ship.soton.ac.uk |
| URI: | http://eprints.soton.ac.uk/id/eprint/22235 |
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