Thermoelastic Stress Analysis of Fatigue-Prone Details

A novel approach for in-situ evaluation of stress fields in the vicinity of fatigue prone details on highway bridges has been developed using a low cost microbolometer thermal imager. The approach is based on the well proven theory of thermoelasticity. The method has been extended to the measurement and visualization of the stress concentrations present at fatigue prone details on highway bridges subject to random truck loading. The theory and the results of laboratory and field testing are presented.

References
1. Harwood, N. and Cummings, W.M. (1991). “Thermoelastic Stress Analysis”, IOP Publishing Ltd, Bristol. 2. Zanetti, E.M., Musso.,Audenino, A.L. (2007). “Thermoelastic stress analysis by means of a standard thermocamera”, Experimental Techniques, volume 31, Issue 2. 3. Patki, A.S. and Pratterson, E.A. (2010). “Thermoelastic stress analysis of fatigue cracks subject to overloads”, Fatigue and Fracture of Engineering Materials and Structures, Volume 33, page 809-821. 4. Greenee, R.J., Patterson, E.A. and Rowlands, R.E. (2008). “Thermoelastic stress analysis”, Springer Handbook of Experimental Solid Mechanics. 5. Rajic, N. and Rowlands, D. (2013). “Thermoelastic stress analysis with a compact low-cost microbolometer system”, Quantitative Infrared Thermography Journal, Volume 10, Issue 2, Pages 135-158. 6. Kantner, M. (2012). “Evaluating Fatigue Cracks in Steel Bridges with Thermoelastic Stress Analysis”. MS Thesis, University of Virginia. 7. Timoshenko, S., &Goodier, J. (1951). Theory of Elasticity (2nd Edition). McGraw-Hill Book Company, Inc.
Metrics
Usage Shares
Total Views
13 Page Views
Total Shares
0 Tweets
13
0 PDF Downloads
0
0 Facebook Shares
Total Usage
13