Results 31 to 40 of about 31,513,563 (328)

Two-way shape memory effect of Ni50.1Mn24.1Ga20.3 Fe5.5 shape memory alloy polycrystalline fiber

open access: yesCailiao gongcheng, 2021
Polycrystalline Ni-Mn-Ga-Fe fibers were prepared by melt-extraction technique. The internal stress and defects introduced by rapid solidification were modified by step-wise chemical ordering annealing.
LIU Yan-fen   +7 more
doaj   +1 more source

High performance shape memory polyurethane synthesized with high molecular weight polyol as the soft segment [PDF]

open access: yes, 2012
Shape memory polyurethanes (SMPUs) are typically synthesized using polyols of low molecular weight (MW~2,000 g/mol) as it is believed that the high density of cross-links in these low molecular weight polyols are essential for high mechanical strength ...
Miraftab, Mohsen   +15 more
core   +1 more source

Effect of Thickness on the Shape Memory Properties of Bisphenol A Epoxy Based Shape Memory Polymer Composites

open access: yes, 2021
Shape memory polymer (SMP) is one of the most highly researched branches of polymer materials in the recent past. It is often called as a smart material due to its unique capability to memorize original shape.
Jeewantha, J.   +9 more
core   +1 more source

Influence of the mechanical loading history on the stress assisted two way memory effect in a Ti-Ni-Cu alloy

open access: yesMaterials Research, 2001
In this work, several tests of thermal cycling under constant load are carried out on Ti-45.0Ni-5.0Cu (at%) shape memory wires. The properties related to the Stress Assisted Two Way Memory Effect (SATWME) of the material are investigated as a function of
Carlos José de Araújo   +3 more
doaj   +1 more source

Design, construction, and modeling of aircraft door sealing plate based on SMAs

open access: yesInternational Journal of Smart and Nano Materials, 2022
In this work, a novel aircraft door sealing structure driven by shape memory alloys (SMAs) is proposed that offers much improved sealing capability than traditional sealing plates.
Chen Zhang   +5 more
doaj   +1 more source

Step-wise R phase transformation rendering high-stability two-way shape memory effect of a NiTiFe-Nb nanowire composite

open access: yes, 2021
In this work, we designed a NiTiFe-Nb nanowire composite to achieve a high-stability and small-hysteresis R phase two-way shape memory effect (TWSME). The R-phase TWSME was achieved in the composite in an annealed state without thermomechanical training ...
Yuxuan Chen   +11 more
semanticscholar   +1 more source

Epoxy/Polycaprolactone Systems with Triple-Shape Memory Effect: Electrospun Nanoweb with and without Graphene Versus Co-Continuous Morphology [PDF]

open access: yes, 2013
Triple-shape memory epoxy (EP)/polycaprolactone (PCL) systems (PCL content: 23 wt %) with different structures (PCL nanoweb embedded in EP matrix and EP/PCL with co-continuous phase structure) were produced.
Márta Fejős   +5 more
core   +1 more source

Shape Memory Alloys (Part I): Significant Properties [PDF]

open access: yesKemija u Industriji, 2014
Shape memory alloys (SMAs) belong to a group of functional materials with the unique property of “remembering” the shape they had before pseudoplastic deformation.
I. Ivanic, M. Gojic, S. Kozuh
doaj   +1 more source

3D Printed Shape Memory Polymers Produced via Direct Pellet Extrusion

open access: yesMicromachines, 2021
Shape memory polymers (SMPs) are materials capable of changing their structural configuration from a fixed shape to a temporary shape, and vice versa when subjected to a thermal stimulus.
Trenton Cersoli   +4 more
doaj   +1 more source

Effect of Spun Velocities and Composition on the R‒phase and Thermomechanical Behavior in Ti‒Ni Ribbons Electrically Heated [PDF]

open access: yesMaterials Research, 2016
This work deals with structural, electrical and mechanical characterization of Ti‒50.13Ni and Ti‒49.62Ni (at.%) shape memory alloys (SMAs) fabricated at different circumferential wheel velocities.
Enrique López Cuellar   +5 more
doaj   +2 more sources

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