The Development and Application of Smart Garment Materials

2010 ◽  
Vol 129-131 ◽  
pp. 472-475
Author(s):  
Li Hui Cao ◽  
Ying Lin Li
Keyword(s):  
Shape Memory ◽  
Smart Materials ◽  
Electronic Materials ◽  
National Market ◽  
Sensory Capacity ◽  
Shape Memory Materials ◽  
Smart Garments ◽  
Definition Of ◽  
Concept Theory ◽  
Stimulation Of

Priority has been giving to smart garment materials in modern textile clothing industries. The definition of smart garment material can be described as the material which has the sensory capacity to the stimulation of the surroundings or the environmental elements and can make responses accordingly and meanwhile, maintain the typical features and garment functions. Sensory capacity, feedback and response are the three main elements of the smart garment material. Five relative mature and widely used smart materials, including shape memory materials, waterproof and moisture permeable materials, temperature adaptable materials, photo chromic and thermo chromic materials, and electronic materials, were thoroughly reviewed in terms of concept, theory and up-to-date applications. The aim was to give an overview to national garment designers and manufacturers in China and to explore the potential of developing smart garments for the national market.

Perspective in Application of the Phase Field Theory to Smart Materials Performance

2005 ◽  
Vol 475-479 ◽  
pp. 1909-1914
Author(s):  
T.Y. Hsu ◽  
Q.P. Meng ◽  
Yong Hua Rong ◽  
Xue Jun Jin
Keyword(s):  
Field Theory ◽  
Martensitic Transformation ◽  
Shape Memory ◽  
Phase Field ◽  
Smart Materials ◽  
Landau Theory ◽  
Main Element ◽  
Smart Device ◽  
Study Phase ◽  
Shape Memory Materials

Previous works on the kinetics of martensitic transformation in shape memory materials through Landau theory and the application of the phase field theory to study phase transformations in alloys are briefly reviewed. Based on field model to improper martensitic transformation proposed by Wang and Khachaturyan in 1997, a simpler model is suggested. Using this model, the motion speed and shape of parent/martensite and martensite-martensite interface are quantitatively described, which are important factors to be considered in design of smart device using shape memory materials as a main element.

Oriceps: Origami-Inspired Forceps

2013 ◽  
Author(s):  
Bryce J. Edmondson ◽  
Landen A. Bowen ◽  
Clayton L. Grames ◽  
Spencer P. Magleby ◽  
Larry L. Howell ◽  
...  
Keyword(s):  
Shape Memory ◽  
Smart Materials ◽  
Design Concept ◽  
Shape Memory Materials ◽  
Robotic Surgeries

This paper presents the conceptualization and modeling of a compliant forceps design, which we have called Oriceps, as an example of origami-inspired design that has application in a variety of settings including robotic surgeries. Current robotic forceps often use traditional mechanisms with parts that are difficult to clean, wear quickly, and are challenging to fabricate due to their complexity and small size. The Oriceps design is based on the spherical kinematic configurations of several action origami models, and can be fabricated by cutting and folding flat material. This design concept has potential implementation as surgical forceps because it would require fewer parts, be easier to sterilize, and be potentially suitable for both macro and micro scales. The folded and planar characteristics of this design could be amenable to application of smart materials resulting in smaller scale, greater tool flexibility, integrated actuation, and an adaptability to a variety of tool functions. The suitability of shape-memory materials for use in Oriceps is discussed.

scholarly journals Shape Memory Materials from Rubbers

Materials ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 7216
Author(s):  
Arunima Reghunadhan ◽  
Keloth Paduvilan Jibin ◽  
Abitha Vayyaprontavida Kaliyathan ◽  
Prajitha Velayudhan ◽  
Michał Strankowski ◽  
...  
Keyword(s):  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Smart Materials ◽  
Metal Alloys ◽  
Second Phase ◽  
Polymer Properties ◽  
Thermomechanical Cycle ◽  
Shape Memory Materials ◽  
Shape Fixity

Smart materials are much discussed in the current research scenario. The shape memory effect is one of the most fascinating occurrences in smart materials, both in terms of the phenomenon and its applications. Many metal alloys and polymers exhibit the shape memory effect (SME). Shape memory properties of elastomers, such as rubbers, polyurethanes, and other elastomers, are discussed in depth in this paper. The theory, factors impacting, and key uses of SME elastomers are all covered in this article. SME has been observed in a variety of elastomers and composites. Shape fixity and recovery rate are normally analysed through thermomechanical cycle studies to understand the effectiveness of SMEs. Polymer properties such as chain length, and the inclusion of fillers, such as clays, nanoparticles, and second phase polymers, will have a direct influence on the shape memory effect. The article discusses these aspects in a simple and concise manner.

Effects of Annealing on Microstructure and Martensitic Transition of Ni-Mn-Co-In Ferromagnetic Shape Memory Alloys

2011 ◽  
Vol 674 ◽  
pp. 171-175
Author(s):  
Katarzyna Bałdys ◽  
Grzegorz Dercz ◽  
Łukasz Madej
Keyword(s):  
Electron Microscopy ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Smart Materials ◽  
Martensitic Transition ◽  
Magnetic Shape Memory ◽  
Ferromagnetic Shape Memory Alloys ◽  
Initial State ◽  
X Ray ◽  
Ferromagnetic Shape Memory

The ferromagnetic shape memory alloys (FSMA) are relatively the brand new smart materials group. The most interesting issue connected with FSMA is magnetic shape memory, which gives a possibility to achieve relatively high strain (over 8%) caused by magnetic field. In this paper the effect of annealing on the microstructure and martensitic transition on Ni-Mn-Co-In ferromagnetic shape memory alloy has been studied. The alloy was prepared by melting of 99,98% pure Ni, 99,98% pure Mn, 99,98% pure Co, 99,99% pure In. The chemical composition, its homogeneity and the alloy microstructure were characterized using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The phase composition was also studied by X-ray analysis. The transformation course and characteristic temperatures were determined by the use of differential scanning calorimetry (DSC) and magnetic balance techniques. The results show that Tc of the annealed sample was found to decrease with increasing the annealing temperature. The Ms and Af increases with increasing annealing temperatures and showed best results in 1173K. The studied alloy exhibits a martensitic transformation from a L21 austenite to a martensite phase with a 7-layer (14M) and 5-layer (10M) modulated structure. The lattice constants of the L21 (a0) structure determined by TEM and X-ray analysis in this alloy were a0=0,4866. The TEM observation exhibit that the studied alloy in initial state has bigger accumulations of 10M and 14M structures as opposed from the annealed state.

An overview of elastic polymeric shape memory materials for comfort fitting

2017 ◽  
Vol 136 ◽  
pp. 238-248 ◽  
Author(s):  
L. Sun ◽  
W.M. Huang ◽  
T.X. Wang ◽  
H.M. Chen ◽  
C. Renata ◽  
...  
Keyword(s):  
Shape Memory ◽  
Shape Memory Materials

scholarly journals Characterization of Sputtered Shape Memory Alloy Ni-Ti Films by Cross-sectional TEM and SEM

2008 ◽  
Vol 14 (S3) ◽  
pp. 85-86
Author(s):  
R.M.S. Martins ◽  
A. Mücklich ◽  
N. Schell ◽  
R.J.C. Silva ◽  
K.K. Mahesh ◽  
...  
Keyword(s):  
Thin Films ◽  
Shape Memory ◽  
Smart Materials ◽  
Functionally Graded ◽  
Sensors And Actuators ◽  
Successful Development ◽  
Cross Sectional ◽  
Mechanical Devices ◽  
Ti Films

Ni-Ti Shape Memory Alloys (SMAs) have been attracting attention as smart materials because they can work as sensors and actuators at the same time. Miniaturization of mechanical devices is evolving toward sub-micron dimensions raising important questions in the properties of Ni-Ti films. In thin films it is essential to investigate the microstructure to understand the origin of the thickness limit. The design of functionally graded films has also been considered but for their successful development it is important to characterize the variations in crystalline structure.

Experimental Validation and Numerical Simulation of Shape Memory Flat Wire Actuators

2014 ◽  
Author(s):  
Alexander Czechowicz ◽  
Sven Langbein
Keyword(s):  
Shape Memory Alloy ◽  
Boundary Conditions ◽  
Shape Memory ◽  
Smart Materials ◽  
Empirical Data ◽  
Dynamic Properties ◽  
Fatigue Behavior ◽  
Different Boundary Conditions ◽  
Heating And Cooling ◽  
Actual Shape

Shape memory alloys (SMA) are thermally activated smart materials. Due to their ability to change into a previously imprinted actual shape through the means of thermal activation, they are suitable as actuators for mechatronical systems. Despite of the advantages shape memory alloy actuators provide, these elements are only seldom integrated by engineers into mechatronical systems. Reasons are the complex characteristics, especially at different boundary conditions and the missing simulation- and design tools. Also the lack of knowledge and empirical data are a reason why development projects with shape memory actuators often lead to failures. This paper deals with the dynamic properties of SMA-actuators (Shape Memory Alloy) — characterized by their rate of heating and cooling procedures — that today can only be described insufficiently for different boundary conditions. Based on an analysis of energy fluxes into and out of the actuator, a numerical model of flat-wire used in a bow-like structure, implemented in MATLAB/SIMULINK, is presented. Different actuation parameters, depending on the actuator-geometry and temperature are considered in the simulation in real time. Additionally this publication sums up the needed empirical data (e.g. fatigue behavior) in order to validate the numerical two dimensional model and presents empirical data on SMA flat wire material.

The small spacecraft with a magnetic sail on high-temperature superconductors

2021 ◽  
pp. 51-61
Author(s):  
Timur Sh. KOMBAEV ◽  
Mikhail K. ARTEMOV ◽  
Valentin K. SYSOEV ◽  
Dmitry S. DEZHIN
Keyword(s):  
Magnetic Field ◽  
Solar Wind ◽  
High Temperature ◽  
Shape Memory ◽  
New Technologies ◽  
High Temperature Superconductors ◽  
Solar Wind Plasma ◽  
Large Area ◽  
Small Spacecraft ◽  
Shape Memory Materials

It is proposed to develop a small spacecraft for an experiment using high-temperature superconductors (HTS) and shape memory materials. The purpose of the experiment is to test a technological capability of creating a strong magnetic field on the small spacecraft using HTS and shape memory materials for deployed large-area structures, and study the magnetic field interaction with the solar wind plasma and the resulting force impact on the small spacecraft. This article is of a polemical character and makes it possible to take a fresh look at the applicability of new technologies in space-system engineering. Key words: high-temperature superconductors, shape memory materials, solar wind, spacecraft.

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