Nano‐metal oxide fillers in thermo‐responsive polycaprolactone‐based polymer nanocomposites smart materials: Impact on thermo‐mechanical, and shape memory properties

2021 ◽  
Author(s):  
Sithara Gopinath ◽  
Nayarassery N Adarsh ◽  
Pankajakshan Nair ◽  
Suresh Mathew
Keyword(s):  
Metal Oxide ◽  
Shape Memory ◽  
Polymer Nanocomposites ◽  
Smart Materials ◽  
Shape Memory Properties

Preparation and shape memory properties of TiO2/PLCL biodegradable polymer nanocomposites

2013 ◽  
Vol 23 (1) ◽  
pp. 120-127 ◽  
Author(s):  
Xi-li LU ◽  
Xiu-qian LÜ ◽  
Jian-yong WANG ◽  
Zhi-jie SUN ◽  
Yun-xiang TONG
Keyword(s):  
Shape Memory ◽  
Polymer Nanocomposites ◽  
Biodegradable Polymer ◽  
Shape Memory Properties

Impacts of Process Parameters on Shape Memory Properties of Stereolithography Manufactured Parts: An Experimental Analysis

2021 ◽  
Author(s):  
Jing Zhao ◽  
Muyue Han ◽  
Lin Li
Keyword(s):  
Shape Memory ◽  
Process Parameters ◽  
Smart Materials ◽  
Manufacturing Systems ◽  
Memory Performance ◽  
Hold Time ◽  
Printing Process ◽  
Thermomechanical Process ◽  
Shape Memory Properties ◽  
Scan Speed

Abstract The emergence of smart materials coupled with additive manufacturing technology has provided competitive advantages over traditional manufacturing systems in terms of manufacturing flexibility, product functionality, and the ability to switch between multiple phases under given external stimuli. Although the fabricability of shape memory materials has been widely explored in stereolithography systems, the shape memory performance of printed smart structures has not been extensively studied. More specifically, in current literature, the printing process is mainly considered independent of material characteristics, and a lack of information is reported on how the printing parameters affect the shape fixity and free recovery performance of the printed parts. Therefore, this work is dedicated to experimentally investigating the influences of parameters from both the stereolithography printing process and thermomechanical process (i.e., shape programming and free recovery) on the shape memory properties. Five parameters, including layer thickness, scan speed, maximum programmed angle, hold time, and recovery time, are experimentally analyzed for their impacts on the shape morphing capabilities. According to the results of this study, a variation of 14.33% on the free recovery ratio can be observed when the scan speed is altered. In addition, the printing process parameters exhibit high levels of dominance in affecting the shape memory performance over parameters involved in the thermomechanical process, such as hold time and maximum programmed angle.

Thermo‐responsive shape memory properties based on polylactic acid and styrene‐butadiene‐styrene block copolymer

2021 ◽  
pp. 51000
Author(s):  
Fathin Hani Azizul Rahim ◽  
Abdul Aziz Saleh ◽  
Raa Khimi Shuib ◽  
Ku Marsilla Ku Ishak ◽  
Zuratul Ain Abdul Hamid ◽  
...  
Keyword(s):  
Block Copolymer ◽  
Shape Memory ◽  
Polylactic Acid ◽  
Shape Memory Properties ◽  
Styrene Butadiene Styrene ◽  
Styrene Butadiene ◽  
Butadiene Styrene

Shape memory properties and microstructural evolution of rapidly solidified CuAlBe alloys

2013 ◽  
Vol 80 ◽  
pp. 92-97 ◽  
Author(s):  
Semra Ergen ◽  
Orhan Uzun ◽  
Fikret Yilmaz ◽  
M. Fatih Kiliçaslan
Keyword(s):  
Shape Memory ◽  
Microstructural Evolution ◽  
Shape Memory Properties ◽  
Rapidly Solidified

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.

scholarly journals Shape Memory NiTi and NiTiCu Alloys Obtained by Spark Plasma Sintering Process

2015 ◽  
Vol 13 ◽  
pp. 83-90 ◽  
Author(s):  
Cristiana Diana Cristea ◽  
Magdalena Lungu ◽  
Alexander M. Balagurov ◽  
Virgil Marinescu ◽  
Otilia Culicov ◽  
...  
Keyword(s):  
Shape Memory ◽  
Intermetallic Compounds ◽  
Spark Plasma Sintering ◽  
Sintering Process ◽  
Transformation Behavior ◽  
Plasma Sintering ◽  
New Process ◽  
Shape Memory Properties ◽  
Spark Plasma ◽  
Niti Shape Memory Alloys

The addition of Cu to near equiatomic NiTi shape memory alloys (SMAs) can provide some modifications of their shape memory properties by affecting their transformation behavior. The same effect was obtained in the case of Ni3Ti2 and Ni4Ti3 precipitates presence in the microstructure of NiTi. Also the substitution of Cu to NiTi alloys increases the hardness of the materials. This paper presents the microstructural and mechanical investigations of NiTi and NiTiCu alloys obtained by spark plasma sintering (SPS) process that represents a great potential for researchers as a new process for the fabrication of intermetallic compounds.

Microstructure, mechanical and shape memory properties of Ti–55Pd–5x (x=Zr, Hf, V, Nb) alloys

2013 ◽  
Vol 585 ◽  
pp. 86-93 ◽  
Author(s):  
R. Arockiakumar ◽  
M. Takahashi ◽  
S. Takahashi ◽  
Yoko Yamabe-Mitarai
Keyword(s):  
Shape Memory ◽  
Shape Memory Properties

Thermomechanics of shape memory polymer nanocomposites

2004 ◽  
Vol 36 (10) ◽  
pp. 929-940 ◽  
Author(s):  
Yiping Liu ◽  
Ken Gall ◽  
Martin L Dunn ◽  
Patrick McCluskey
Keyword(s):  
Shape Memory ◽  
Polymer Nanocomposites ◽  
Shape Memory Polymer
Sign in / Sign up

Export Citation Format

Share Document