Flaw identification using the boundary element method

✍ Scribed by S. C. Mellings; M. H. Aliabadi

• Publisher: John Wiley and Sons
• Year: 1995
• Tongue: English
• Volume: 38
• Category: Article
• ISSN: 0029-5981
• DOI: 10.1002/nme.1620380304

✦ Synopsis

Abstract

In this paper a new boundary element formulation is presented for the identification of the location and size of internal flaws in two‐dimensional structures. An introduction to inverse analysis is given, with special reference to methods of flaw identification, along with a brief review of the optimization methods employed. Both the standard boundary element and the dual boundary element method are presented, with the dual boundary element method proposed as the basis for the new formulation. The flaw identification method is presented, along with the computation of the boundary displacement and traction derivatives and the specialized analytical integration used for cracked boundaries. Examples are given to demonstrate the accuracy of the sensitivity values and the performance of flaw location.