EXPERIMENTAL AND NUMERICAL CHARACTERIZATION OF SINTERIZED MATERIALS WITH SPECKLE INTERFEROMETRY AND OPTIMIZATION METHODS |
|---|
| Claudia Barile, Caterina Casavola, Carmine Pappalettere, Giovanni Pappalettera |
- Abstract:
- The traditional approach to mechanically characterize materials is to perform destructive tests. When material properties are known, the displacement field of a specimen generally loaded and constrained is univocally defined. This paper suggests an innovative methodology in order to determine mechanical characteristics (E, ν) of new materials for an inverse solution of the elastic problem. A hybrid approach based on the combination of phase-shifting electronic speckle pattern interferometry (PS-ESPI) and finite element analysis is utilized. An innovative algorithm, implemented in the numerical model, automatically executes several optimization loops varying E and ? in order to minimize the objective function based on the difference between displacements evaluated by means of ESPI and the same predicted by FEM analysis. Three-pointbending experimental tests are carried out on titanium alloy and Selective Laser Melting (SLM) specimens.
- Download:
- IMEKO-YSESM-2011-ea08.pdf
- DOI:
- -
- Event details
- IMEKO TC:
- TC15
- Event name:
- TC15 Youth Symposium 2011
- Title:
10th Youth Symposium on Experimental Solid Mechanics (TC15)
- Place:
- Chemnitz, GERMANY
- Time:
- 25 May 2011 - 28 May 2011