Results 31 to 40 of about 4,530 (246)

A concise review of the applications of NiTi shape-memory alloys in composite materials

open access: yesSouth African Journal of Science, 2014
Composite materials have increasingly been used in construction and in the aerospace and automotive industries because they are lightweight, strong and corrosion resistant, and because their anisotropic properties can be controlled; maintenance costs are
Kazeem O. Sanusi   +2 more
doaj   +1 more source

Asimmetrical Pseudoelasticity

open access: yes, 2010
Term "asymmetrical pseudoelasticity" refers to the theory, in which a symmetrical stress tensor and a symmetrical strain tensor are connected by means of an asymmetrical material tensor. An 6-dimensional asymmetrical matrix of elasticity has been constructed that is invariable in relation to orthogonal transformation with a single rotation operator and
Bytev, V. O., Shkutin, L. I.
openaire   +2 more sources

Structural transitions in a NiTi alloy: a multistage loading-unload cycle

open access: yesFracture and Structural Integrity, 2013
NiTi shape memory alloys (SMAs) are increasingly used in many engineering and medical applications, because they combine special functional properties, such as shape memory effect and pseudoelasticity, with good mechanical strength and biocompatibility ...
V. Di Cocco, C. Maletta, S. Natali
doaj   +3 more sources

On the use of the Bingham statistical distribution in microsphere-based constitutive models for arterial tissue [PDF]

open access: yes, 2010
Constitutive models for arterial tissue have been an active research field during the last years. The main micro-constituents of blood vessels are different types of cells and the extra-cellular matrix formed by an isotropic high water content ground ...
Alastrué, V.   +3 more
core   +2 more sources

Pseudoelastic Deformation of CuAlMn Single Crystals [PDF]

open access: yesLe Journal de Physique IV, 1995
Martensitic transformation associated with a tensile deformation of CuAlMn single crystals in [100] direction was studied using in-situ transmission electron microscopy. Stress/strain curves obtained during pseudoelastic deformation of microscopic samples were slightly different from bulk ones due to martensite formation in the stage of stress increase
Dutkiewicz, J.   +4 more
openaire   +2 more sources

On the elastic energy invariance of crystal twins

open access: yesArchives of Mechanics, 2010
An analysis by Zanzotto (1992, 1996) showed that, if crystal twinning is considered as a material symmetry operation, the symmetry groups of many crystals that form twins correspond to the unimodular group, which is the symmetry group of elastic fluids ...
R. Glüge
doaj   +1 more source

The Effects of Geometric Parameters Under Small and Large Deformations on Dissipative Performance of Shape Memory Alloy Helical Springs [PDF]

open access: yesJournal of Stress Analysis, 2018
This paper presents an investigation into shape memory alloy (SMA) springs considering the effects of geometry changes under small as well as large deformations. Helical springs were fabricated by shape setting of NiTi wires through heat treatment.
Y. Mohammad Hashemi, M. Kadkhodaei
doaj   +1 more source

Functional Behaviour of Cold-Worked and Straight-Annealed NiTi Elements Processed with Ultrashort Laser Cutting

open access: yesMetals, 2022
Among functional materials, quasiequiatomic NiTi alloys are one of the most promising and diffused for some sectors, from the biomedical to aerospace ones.
Carlo Alberto Biffi, Ausonio Tuissi
doaj   +1 more source

Irradiation-assisted pseudoelasticity in 316L stainless steel through dislocation loop-controlled martensitic phase transformations

open access: yesMaterials Research Letters
We present pseudoelasticity activated by neutron irradiation in 316L austenitic stainless steel. Wrought and powder metallurgy with hot isostatic pressing (PM-HIP) specimens are irradiated to ∼4 displacements per atom at ∼400°C, then nanoindented.
Arya Chatterjee   +4 more
doaj   +1 more source

Phase transformation yield surface of anisotropic shape memory alloys [PDF]

open access: yes, 2005
International audienceTwo theoretical investigations, i.e. a phenomenological macroscopic model and a "micro-macro" model are developed for modelling the experimental surfaces of initiation of phase transformation in shape memory alloys.
Blanc, P.   +3 more
core   +6 more sources

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