Using DIC to Identify Microscale Strain Fields from in-situ SEM Images of a Pearlitic Steel
Journal article, 2014

Digital Image Correlation (DIC) is used to analyze in-situ obtained SEM images of a pearlitic steel. Rather than using a synthetic speckle the microstructure of the material (cementite lamellae embedded in a ferrite matrix) is used as a natural speckle. The impact of the DIC method parameters on the identified motion (displacements and strains) is studied and it is shown that the method is robust, in the sense of being insensitive to the subset size, when it comes to determining the local subset displacements. However, a sufficiently large subset size is required in order for the local subset strains to converge.

Pearlite

in-situ SEM

Multiscale modeling

2D-DIC

natural speckle

Author

Erik Lindfeldt

Chalmers, Applied Mechanics, Material and Computational Mechanics

Magnus Ekh

Chalmers, Applied Mechanics, Material and Computational Mechanics

Krste Cvetkovski

Chalmers, Materials and Manufacturing Technology, Materials Technology

Martin Schilke

Chalmers, Materials and Manufacturing Technology, Materials Technology

Experimental Mechanics

0014-4851 (ISSN)

Vol. 54 9 1503-1513

Subject Categories

Mechanical Engineering

Areas of Advance

Transport

Materials Science

Infrastructure

C3SE (Chalmers Centre for Computational Science and Engineering)

DOI

10.1007/s11340-014-9937-4

More information

Created

10/7/2017