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Measurement, analysis and reconstruction of residual stresses

Faghidian, S. A ; Sharif University of Technology | 2012

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  1. Type of Document: Article
  2. DOI: 10.1177/0309324712441146
  3. Publisher: 2012
  4. Abstract:
  5. Residual stresses, created in a steel beam by elastic-plastic bending, are predicted using an approximate analysis and the finite element method. The predictions are compared to experimental measurements obtained from the application of incremental centre hole drilling, deep hole drilling and neutron diffraction methods. Finite element simulations of the incremental centre hole drilling and deep hole drilling methods applied to the predicted residual stresses permitted an assessment of their ability to reconstruct the stresses. An analytical reconstruction analysis using an Airy stress function together with boundary and equilibrium conditions is developed and applied to the predictions and measurements. The reconstruction of the predictions enabled a reference case to be developed and used to assess the application of the reconstruction process to experimental data. It is shown that satisfactory through depth residual stress profiles can be obtained, providing the errors are about the same of those found in the measurement techniques
  6. Keywords:
  7. Inverse reconstruction theory ; Limited measurements ; Airy stress function ; Approximate analysis ; Deep hole drilling ; Elastic-Plastic ; Elastic-plastic beam ; Equilibrium conditions ; Experimental data ; Experimental measurements ; Finite element simulations ; Four-point bending ; Hole drilling ; Measurement techniques ; Reconstruction analysis ; Reconstruction process ; Reconstruction theory ; Residual stress profiles ; Steel beams ; Elastoplasticity ; Finite element method ; Forecasting ; Measurement errors ; Neutron diffraction ; Residual stresses
  8. Source: Journal of Strain Analysis for Engineering Design ; Volume 47, Issue 4 , February , 2012 , Pages 254-264 ; 03093247 (ISSN)
  9. URL: http://sdj.sagepub.com/content/47/4/254