Zobrazeno 1 - 10
of 44
pro vyhledávání: '"Hamidreza Abdolvand"'
Autor:
Sina Matin, Sahar Toorandaz, Saman Nikpour, Hamidreza Abdolvand, Ehsan Toyserkani, Yolanda S. Hedberg
Publikováno v:
Additive Manufacturing Letters, Vol 7, Iss , Pp 100156- (2023)
Ti6Al4V has been used widely as a biomedical alloy and is increasingly manufactured by additive manufacturing due to customized shapes. As implant material, it is frequently exposed to both friction and corrosive environments. This study investigates
Externí odkaz:
https://doaj.org/article/8123a68f294d4f89bf5653291b75a4b2
Publikováno v:
Materials & Design, Vol 222, Iss , Pp 111030- (2022)
The development of strong textures can affect mechanical anisotropy in the specimens produced by the laser powder bed fusion (LPBF) additive manufacturing (AM) technique. In this study, in-situ neutron diffraction experiments were conducted on nickel
Externí odkaz:
https://doaj.org/article/34e412c27d9748d08708011ad3ad6ade
Publikováno v:
Communications Materials, Vol 2, Iss 1, Pp 1-11 (2021)
Load partitioning to grains during deformation of a polycrystalline material is affected by the presence of twins. Here, synchrotron diffraction is used to study 1300 twin-parent grains, revealing that stress is higher in twins than in the parent gra
Externí odkaz:
https://doaj.org/article/f10d2cda6ab642e4a2d4aeed66f517c4
Autor:
Charles Mareau, Hamidreza Abdolvand
Publikováno v:
Journal of Theoretical, Computational and Applied Mechanics (2022)
A polycrystalline plasticity model, which incorporates the contribution of deformation twinning, is proposed. For this purpose, each material point is treated as a composite material consisting of a parent constituent and multiple twin variants. In t
Externí odkaz:
https://doaj.org/article/728face9d1514cbea8f678a00d56a4df
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-11 (2018)
Understanding how individual crystals share load inside a polycrystal is crucial to improve component lifetime, but remains difficult to measure. Here, the authors show that the crystal orientation of a grain and that of its neighbours can surprising
Externí odkaz:
https://doaj.org/article/9a7faae64092434ba04c0fdb05a9e688
Autor:
Omid Sedaghat, Hamidreza Abdolvand
Publikováno v:
Crystals, Vol 11, Iss 11, p 1382 (2021)
Two methods for the determination of geometrically necessary dislocation (GND) densities are implemented in a lower-order strain-gradient crystal plasticity finite element model. The equations are implemented in user material (UMAT) subroutines. Meth
Externí odkaz:
https://doaj.org/article/e2d61e89a43147399c57b5499c8475b9
Publikováno v:
Journal of Nuclear Materials. 577:154321
Publikováno v:
Mechanics of Materials. 177:104544
Autor:
Travis Skippon, Christopher Cochrane, Zhouyao Wang, Hamidreza Abdolvand, Qiang Wang, Mark R. Daymond
Publikováno v:
International Journal of Plasticity. 124:133-154
Orientation-dependent irradiation hardening phenomena in pure Zr have been studied, and the corresponding mechanisms investigated based on the combined use of SEM, TEM, and CPFEM. Nanoindentation was conducted on ten grains at room temperature before
Publikováno v:
Journal of the mechanical behavior of biomedical materials. 124
Zirconia-based dental materials are extensively used in clinical practice due to their tooth-like appearance, biofunctionality, biocompatibility, and affordability. However, premature clinical failures of veneering porcelains raise a concern about th