Strain Localisation during a Tensile Test of Metallic Plates: Experimental and Numerical Results
| Periodical | Key Engineering Materials (Volumes 417 - 418) |
|---|---|
| Main Theme | Advances in Fracture and Damage Mechanics VIII |
| Edited by | M.H Aliabadi, S. Abela, S. Baragetti, M. Guagliano and Han-Seung Lee |
| Pages | 569-572 |
| DOI | 10.4028/www.scientific.net/KEM.417-418.569 |
| Citation | D.A. Cendón et al., 2009, Key Engineering Materials, 417-418, 569 |
| Online since | October, 2009 |
| Authors | D.A. Cendón, Jose M. Atienza, Manuel Elices |
| Keywords | Failure Strain, Necking, Strain Localisation, Tensile Test |
| Price | US$ 28,- |
The stress-strain curve of a material is usually obtained from the load-displacement curve measured in a tensile test, assuming no strain localisation up to maximum load. However, strain localisation and fracture phenomena are far from being completely understood. Failure and strain localisation on plane tensile specimens has been studied in this work. A deeply instrumented experimental benchmark on steel specimens has been developed. Surface strain fields have been recorded throughout the tests, using an optical extensometer. This allowed characterisation of the strain localisation and failure processes. Tests have been numerically modelled for a more detailed analysis. Preliminary results show a substantial influence of geometrical specimen defects on the strain localisation phenomena that may be critical on the stress-strain curves obtained and in the failure mechanisms.
