| 1. |
Maj M., Nowak M., Musiał S., Płociński T.♦, Experimental analysis of material, lattice and plastic rotation during deformation of aluminium multicrystal,
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, ISSN: 0921-5093, DOI: 10.1016/j.msea.2020.139725, Vol.790, pp.139725-1-5, 2020 Abstract:
This paper focuses on the experimental determination of the distribution of material, lattice and plastic rotation during deformation of crystalline aggregate. The proposed methodology uses standard electron backscattering diffraction technique combined with 3D digital image correlation data. The presented approach is used for analysis of rotations during deformation of aluminium multicrystal. Keywords:
image analysis, electron backscattering diffraction, plastic deformation, misorientation, plastic rotation Affiliations:
| Maj M. | - | IPPT PAN | | Nowak M. | - | IPPT PAN | | Musiał S. | - | IPPT PAN | | Płociński T. | - | Warsaw University of Technology (PL) |
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| 2. |
Musiał S., Nowak M., Maj M., Stress field determination based on digital image correlation results,
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING, ISSN: 1644-9665, DOI: 10.1016/j.acme.2019.06.007, Vol.19, No.4, pp.1183-1193, 2019Abstract:
The aim of this work was to determine the stress distribution during plastic deformation, based on the displacement field obtained using the digital image correlation (DIC) method. To achieve stress distribution, the experimentally measured displacement gradient and the elastoplastic material model with isotropic hardening were used. The proposed approach was implemented in the ThermoCorr program. The developed procedure was used to determine stress fields for uniaxial tension and simple shear processes, carried out on samples made of austenitic steel 304L. Both material parameters, such as the Young's modulus, Poisson's ratio, yield stress, and parameters of the hardening curve, were acquired experimentally. The macroscopic force obtained from the DIC-based stresses and its finite element analysis (FEA) equivalent were compared with that measured during the experiment. It was shown that the DIC-based approach gives more accurate results with respect to FEA, especially for a simple shear test, where FEA significantly overestimates the value of experimentally obtained macroscopic force. Keywords:
stress field determination, digital image correlation (DIC), finite element analysis (FEA), elastoplastic constitutive model, plastic work Affiliations:
| Musiał S. | - | IPPT PAN | | Nowak M. | - | IPPT PAN | | Maj M. | - | IPPT PAN |
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