Cyclic pseudoelastic training and two-way shape memory behavior of a NiTi alloy with small irrecoverable plastic strains:numerical modeling

2021 ◽  
Author(s):  
J.S. Owusu-Danquah ◽  
A.F. Saleeb ◽  
M.A. Soudah
Keyword(s):  
Shape Memory ◽  
Niti Alloy ◽  
Shape Memory Behavior

Influence of compressive load conditions and thickness on the two-way shape memory behavior in tube-shaped NiTi alloy

2012 ◽  
Vol 21 (10) ◽  
pp. 105013 ◽  
Author(s):  
Young Ik Yoo ◽  
Dong Kil Shin ◽  
Chang Ho Lee ◽  
Jung Ju Lee
Keyword(s):  
Shape Memory ◽  
Niti Alloy ◽  
Compressive Load ◽  
Shape Memory Behavior ◽  
Load Conditions

Shape Memory Behavior of Porous NiTi Alloy

2016 ◽  
Vol 47 (4) ◽  
pp. 1499-1503 ◽  
Author(s):  
Mehmet Kaya ◽  
Ömer Çakmak
Keyword(s):  
Shape Memory ◽  
Niti Alloy ◽  
Shape Memory Behavior ◽  
Porous Niti

On the two-way shape memory behavior in NiTi alloy—An experimental analysis

2008 ◽  
Vol 56 (13) ◽  
pp. 3266-3277 ◽  
Author(s):  
Kiyohide Wada ◽  
Yong Liu
Keyword(s):  
Shape Memory ◽  
Experimental Analysis ◽  
Niti Alloy ◽  
Shape Memory Behavior

scholarly journals Net-Shape NiTi Shape Memory Alloy by Spark Plasma Sintering Method

2021 ◽  
Vol 11 (4) ◽  
pp. 1802
Author(s):  
Sneha Samal ◽  
Orsolya Molnárová ◽  
Filip Průša ◽  
Jaromír Kopeček ◽  
Luděk Heller ◽  
...  
Keyword(s):  
Shape Memory ◽  
Shape Memory Effect ◽  
Spark Plasma Sintering ◽  
Memory Effect ◽  
Niti Alloy ◽  
Niti Shape Memory Alloy ◽  
Good Shape ◽  
Plasma Sintering ◽  
Shape Memory Effects ◽  
Spark Plasma

An analysis of the shape memory effect of a NiTi alloy by using the spark plasma sintering approach has been carried out. Spark plasma sintering of Ti50Ni50 powder (20–63 µm) at a temperature of 900 °C produced specimens showing good shape memory effects. However, the sample showed 2.5% porosity due to a load of 48 MPa. Furthermore, an apparent shape memory effect was recorded and the specimens were characterized by uniformity in chemical composition and shape memory alloys of NiTi showed significant austenite phases with a bending strain recovery of >2.5%.

3D-Printed Bioplastics with Shape-Memory Behavior Based on Native Bovine Serum Albumin

2021 ◽  
Author(s):  
Eva Sanchez-Rexach ◽  
Patrick T. Smith ◽  
Alvaro Gomez-Lopez ◽  
Maxence Fernandez ◽  
Aitziber L. Cortajarena ◽  
...  
Keyword(s):  
Bovine Serum Albumin ◽  
Serum Albumin ◽  
Shape Memory ◽  
Bovine Serum ◽  
Shape Memory Behavior ◽  
3D Printed ◽  
Behavior Based

scholarly journals Key Properties of a Bioactive Ag-SiO2/TiO2 Coating on NiTi Shape Memory Alloy as Necessary at the Development of a New Class of Biomedical Materials

2021 ◽  
Vol 22 (2) ◽  
pp. 507
Author(s):  
Mateusz Dulski ◽  
Robert Gawecki ◽  
Sławomir Sułowicz ◽  
Michal Cichomski ◽  
Alicja Kazek-Kęsik ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Dermal Fibroblast ◽  
Niti Alloy ◽  
Bacterial Biofilm ◽  
Niti Shape Memory Alloy ◽  
Normal Human Dermal Fibroblast ◽  
Water Contact ◽  
Nano Coating

Recent years have seen the dynamic development of methods for functionalizing the surface of implants using biomaterials that can mimic the physical and mechanical nature of native tissue, prevent the formation of bacterial biofilm, promote osteoconduction, and have the ability to sustain cell proliferation. One of the concepts for achieving this goal, which is presented in this work, is to functionalize the surface of NiTi shape memory alloy by an atypical glass-like nanocomposite that consists of SiO2-TiO2 with silver nanoparticles. However, determining the potential medical uses of bio(nano)coating prepared in this way requires an analysis of its surface roughness, tribology, or wettability, especially in the context of the commonly used reference coat-forming hydroxyapatite (HAp). According to our results, the surface roughness ranged between (112 ± 3) nm (Ag-SiO2)—(141 ± 5) nm (HAp), the water contact angle was in the range (74.8 ± 1.6)° (Ag-SiO2)—(70.6 ± 1.2)° (HAp), while the surface free energy was in the range of 45.4 mJ/m2 (Ag-SiO2)—46.8 mJ/m2 (HAp). The adhesive force and friction coefficient were determined to be 1.04 (Ag-SiO2)—1.14 (HAp) and 0.247 ± 0.012 (Ag-SiO2) and 0.397 ± 0.034 (HAp), respectively. The chemical data showed that the release of the metal, mainly Ni from the covered NiTi substrate or Ag from Ag-SiO2 coating had a negligible effect. It was revealed that the NiTi alloy that was coated with Ag-SiO2 did not favor the formation of E. coli or S. aureus biofilm compared to the HAp-coated alloy. Moreover, both approaches to surface functionalization indicated good viability of the normal human dermal fibroblast and osteoblast cells and confirmed the high osteoconductive features of the biomaterial. The similarities of both types of coat-forming materials indicate an excellent potential of the silver-silica composite as a new material for the functionalization of the surface of a biomaterial and the development of a new type of functionalized implants.

scholarly journals Hydrolyzable Biobased Polyhydroxyurethane Networks with Shape Memory Behavior at Body Temperature

2020 ◽  
Vol 8 (24) ◽  
pp. 9125-9135 ◽  
Author(s):  
Fiona Magliozzi ◽  
Arthur Scali ◽  
Guillaume Chollet ◽  
Damien Montarnal ◽  
Etienne Grau ◽  
...  
Keyword(s):  
Body Temperature ◽  
Shape Memory ◽  
Shape Memory Behavior

Tailoring vinylogous urethane chemistry for the cross-linked polybutadiene: Wide freedom design, multiple recycling methods, good shape memory behavior

Polymer ◽  
2018 ◽  
Vol 148 ◽  
pp. 202-210 ◽  
Author(s):  
Zhiyong Liu ◽  
Changxu Zhang ◽  
Zixing Shi ◽  
Jie Yin ◽  
Ming Tian
Keyword(s):  
Shape Memory ◽  
Shape Memory Behavior ◽  
Good Shape ◽  
The Cross ◽  
Multiple Recycling
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