SYMPOSIA PAPER Published: 01 January 2005
STP37526S

Identification of Crystalline Behavior on Macroscopic Response and Local Strain Field Analysis: Application to Alpha Zirconium Alloys

Source

The purpose of this paper is to present an identification method of the crystalline behavior of a material from a mechanical test performed on a polycrystalline sample. Because of the lack of knowledge about its crystalline behavior, this method is applied to a Zirconium alloy. This identification is based on a finite element modeling of the microstructure, and the results are compared to both the macroscopic and the microscopic experimental results. On the microscopic scale, the plastic strains are obtained using a micro-extensometry technique and the crystalline orientation using an EBSD technique. In order to validate the method, an identification is performed with only two free parameters: the evolutions of the macroscopic and microscopic errors appear to be regular and exhibit a well-defined minimum so that the parameters can be clearly identified.

Author Information

Gélébart, L
CEA Saclay /DEN/DMN/SRMA
Crépin, J
LMS Ecole Polytechnique
Dexet, M
CEA Saclay /DEN/DMN/SRMA
Sauzay, M
CEA Saclay /DEN/DMN/SRMA
Roos, A
ONERA
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Details
Developed by Committee: B10
Pages: 585–603
DOI: 10.1520/STP37526S
ISBN-EB: 978-0-8031-5519-0
ISBN-13: 978-0-8031-3493-5