scispace - formally typeset
M

Muin S. Oztop

Researcher at Columbia University

Publications -  8
Citations -  392

Muin S. Oztop is an academic researcher from Columbia University. The author has contributed to research in topics: Electron backscatter diffraction & Deformation (engineering). The author has an hindex of 7, co-authored 8 publications receiving 345 citations.

Papers
More filters
Journal ArticleDOI

Experimental lower bounds on geometrically necessary dislocation density

TL;DR: In this article, a single nickel crystal is indented with a wedge indenter such that a two-dimensional deformation state with three effective plane strain slip systems is induced, and all non-zero components of the Nye dislocation density tensor are calculated from the lattice rotation field.
Journal ArticleDOI

Geometrically necessary dislocation density measurements associated with different angles of indentations

TL;DR: In this paper, numerical simulations of various angles of wedge indenters into face-centered cubic single crystal were performed under plane strain conditions, and the experiments included ang ang angles of the indenters.
Journal ArticleDOI

Length-scale effect due to periodic variation of geometrically necessary dislocation densities

TL;DR: In this article, a strain gradient plasticity framework is extended by incorporating the physical quantities obtained from experimental observations: the quasi-periodicity and the saturation value of dislocation densities.
Journal ArticleDOI

Geometrically necessary dislocation density measurements at a grain boundary due to wedge indentation into an aluminum bicrystal

TL;DR: In this paper, an aluminum bicrystal with a symmetric tilt and a coincident site lattice grain boundary was deformed plastically via wedge indentation under conditions that led to a plane strain deformation state.
Journal ArticleDOI

Wedge indentation into elastic–plastic single crystals. 2: Simulations for face-centered cubic crystals

TL;DR: The asymptotic stress and deformation fields associated with the contact point singularity of a nearly-flat wedge indenter impinging on a specially oriented single face-centered cubic crystal are derived analytically in a companion paper as discussed by the authors.