Results 191 to 200 of about 1,681,893 (239)

Shape memory effect in tensegrity structures

Mechanics Research Communications, 2003
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TIG Welding and Shape Memory Effect of TiNi Shape Memory Alloy

Journal of Intelligent Material Systems and Structures, 1996
In the present study, with respect to TIG welding for a TiNi shape-memory alloy wire and sheet, the optimum welding schedule was decided based on the breaking load of the weld and its standard deviation. By performing the cyclic loading-unloading and heating-cooling tests in the neighborhood of the weld, the shape memory effect was investigated.
A. Ikai, K. Kimura, H. Tobushi
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Shape memory polymer composite structures with two-way shape memory effects

Materials Letters, 2012
Abstract Shape memory polymers (SMPs) usually exhibit one-way shape memory effect. A simple and effective way to obtain two-way shape memory effect by SMP composite structures is proposed. The system consists of a SMP film with higher glass transition temperature Tg surrounded on another SMP cylindrical core with lower Tg.
Zhengdao Wang, Weibin Song, Liaoliang Ke, Yuesheng Wang   +3 more
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Relationship between Annealing and Shape Memory Effect of Shape Memory Polyurethane

Advanced Materials Research, 2014
The relationship of annealing and shape memory effect of uniaxially oriented shape memory polyurethane was studied; meanwhile a new method of adjusting shape recovery ratio by annealing was proposed for further consideration. Experiments were designed to compare the influence on length change from annealing and shape memory effect with shape memory ...
Jia Ying, Masaaki Nishikawa, Masaki Hojo
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Superelastic and Shape Memory Effects in Laminated Shape-Memory-Alloy Beams

AIAA Journal, 2003
A simple shape-memory-alloy (SMA) model to simulate the superelastic behavior as well as the shape memory effect is proposed. It considers only the transformations from austenite to single-variant martensite and from single-variant martensite to austenite, taking into account the ine uence of the temperature in the constitutive relationship.
S. Marfia, E. Sacco, J. N. Reddy
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Chemically-crosslinked zwitterionic polyurethanes with excellent thermally-induced multi-shape memory effect and moisture-induced shape memory effect

Polymer, 2018
In this contribution, shape memory polymers (SMPs) of chemically-crosslinked zwitterionic polyurethanes (CZPUs) were fabricated by crosslinking of the N,N-bis(2-hydroxyethyl) isonicotinamide (BINA)/hexamethylene diisocyanate (HDI) polyurethanes system by
H. Zhuo, Zhankui Mei, Heng Chen, Shaojun Chen   +3 more
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Shape memory effect of antiferroelectrics

Ferroelectrics, 2001
Abstract Pb(Zr0.95 Ti0.05)O3 (PZT) antiferroelectric ceramics have been fabricated by sintering and their structure and phase transition behavior were studied by X-ray diffraction (XRD) and Differential Scanning Calorimetry (DSC). The phase transition order is anti-ferroelectric (ARE) → ferroelectric (FE) → Paraelectric with structure changes ...
Yurong Dai, Ying Chen, Huimin Shen, Zhifang Zhang, Yening Wang   +4 more
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Effect of graphene oxide-carbon nanotube hybrid filler on the mechanical property and thermal response speed of shape memory epoxy composites

Composites Science And Technology, 2019
Shape memory polymers (SMPs) will come to act an indispensable part in numerous aspects of human activity. However, the low mechanical strengths and thermal conductivities of SMPs have largely restricted their applications. Remarkable improvements in the
Enliang Wang, Yubing Dong, Z. Islam, Laiming Yu, Fuyao Liu, Shuaijie Chen, Xiaoming Qi, Yaofeng Zhu, Yaqin Fu, Zhaohe Xu, N. Hu   +10 more
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The Shape-Memory Effect

2003
Abstract We are now in a position to discuss the shape-memory effect. Recall from the introduction that this is the ability of certain materials to recover, on heating, apparently plastic deformation sustained below a critical temperature.
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Reversible elastocaloric effect at ultra-low temperatures in nanocrystalline shape memory alloys

Acta Materialia, 2019
Superelastic shape memory alloys (SMAs) exhibit a reversible elastocaloric effect that originates from a release/absorption of latent heat associated with a stress-induced martensitic phase transformation.
A. Ahadi, T. Kawasaki, S. Harjo, W. Ko, Q. Sun, K. Tsuchiya   +5 more
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