Open AccessDisplacement analysis of a bend plate test with mechanical loading and laser heating
Author(s) -
Poh-Sang Lam
Publication year - 1997
Language(s) - English
Resource type - Reports
DOI - 10.2172/565425
Subject(s) - materials science , deformation (meteorology) , laser , displacement (psychology) , residual stress , finite element method , stress (linguistics) , beam (structure) , structural engineering , laser beams , composite material , displacement field , optics , engineering , physics , psychology , psychotherapist , linguistics , philosophy
The surface displacment of a steel plate caused by a permanent deformation as a result of local yielding was modeled by a finite element analysis. The local yielding occurs when a small area of the plate is heated by a laser beam. The calculated displacments are in good agreement with the preliminary experimental data obtained using a bend specimen with laser heating at the University of Alabama at Huntsville. It has been shown computuationally and optically that the relative displacments are less than 1mm near the laser heated area of the specimen. The results demonstrate that the experimental approach is a feasible technique for determining the residual stress under multiaxial stress field