WIT Press


WELD ZONE MATERIAL CHARACTERISATION BASED ON SPHERICAL INDENTATION DATA



Price

Free (open access)

Paper DOI

10.2495/CMEM-V6-N3-527-539

Volume

Volume 6 (2018), Issue 3

Pages

12

Page Range

527 - 539

Author(s)

S. SYNGELLAKIS, H. HABBAB & B. G. MELLOR

Abstract

An  improved  elasto-plastic  characterisation  technique  relying  on  instrumented  indentation  data, accounting for frame compliance, spherical indenter imperfections and, most importantly, material pile-up at indentation edges was validated on experimental data from control specimens with known properties. The method was subsequently applied to the characterisation of weld regions for which traditional testing methods are not applicable. Variations of elasto-plastic properties were obtained from indentations on a butt-welded steel specimen spanning the three distinct weld regions. The consistency of these results and their sensitivity to variations of experimental data was examined and discussed.

Keywords

elasto-plastic properties, instrumented indentation, material pile-up, spherical indenter, weld zones