A composite material with room temperature shape processability and optical repair

2016 ◽  
Vol 4 (25) ◽  
pp. 5932-5939 ◽  
Author(s):  
Guo Li ◽  
Hu Zhang ◽  
Daniel Fortin ◽  
Weizheng Fan ◽  
Hesheng Xia ◽  
...  
Keyword(s):  
Composite Material ◽  
Shape Memory ◽  
Room Temperature ◽  
Ambient Conditions ◽  
Shape Memory Composite

The room temperature programmability of a shape memory composite material enables the optical repair of deformation damage under ambient conditions.

Preparation of a nanostructured shape-memory composite material for biomedical applications

2015 ◽  
Vol 51 (4) ◽  
pp. 400-404 ◽  
Author(s):  
E. O. Nasakina ◽  
M. A. Sevost’yanov ◽  
A. B. Mikhailova ◽  
M. A. Gol’dberg ◽  
K. Yu. Demin ◽  
...  
Keyword(s):  
Composite Material ◽  
Shape Memory ◽  
Biomedical Applications ◽  
Shape Memory Composite

Forming of Shape Memory Composite Structures

2013 ◽  
Vol 554-557 ◽  
pp. 1930-1937 ◽  
Author(s):  
Loredana Santo ◽  
Fabrizio Quadrini ◽  
Leonardo De Chiffre
Keyword(s):  
Shape Memory ◽  
Composite Structures ◽  
Room Temperature ◽  
Thermoplastic Composite ◽  
Bending Test ◽  
Core Material ◽  
Foam Core ◽  
Axial Tomography ◽  
Initial Shape ◽  
Shape Memory Composite

A new forming procedure was developed to produce shape memory composite structures having structural composite skins over a shape memory polymer core. Core material was obtained by solid state foaming of an epoxy polyester resin with remarkably shape memory properties. The composite skin consisted of a two-layer unidirectional thermoplastic composite (glass filled polypropylene). Skins were joined to the foamed core by hot compression without any adhesive: a very good adhesion was obtained as experimental tests confirmed. The structure of the foam core was investigated by means of computer axial tomography. Final shape memory composite panels were mechanically tested by three point bending before and after a shape memory step. This step consisted of a compression to reduce the panel thickness up to 60%. At the end of the bending test the panel shape was recovered by heating and a new memory step was performed with a higher thickness reduction. Memory steps were performed at room temperature and 120 °C so as to test the foam core in the glassy and rubbery state, respectively. Shape memory tests revealed the ability of the shape memory composite structures to recover the initial shape also after severe damaging (i.e. after room temperature compression). Compressing the panel at a temperature higher than the foam resin glass transition temperature minimally affects composite stiffness.

Giant reversible deformations in a shape-memory composite material

2010 ◽  
Vol 36 (4) ◽  
pp. 329-332 ◽  
Author(s):  
A. V. Irzhak ◽  
V. S. Kalashnikov ◽  
V. V. Koledov ◽  
D. S. Kuchin ◽  
G. A. Lebedev ◽  
...  
Keyword(s):  
Composite Material ◽  
Shape Memory ◽  
Shape Memory Composite

Submicron-sized actuators based on enhanced shape memory composite material fabricated by FIB-CVD

2012 ◽  
Vol 21 (5) ◽  
pp. 052001 ◽  
Author(s):  
Dmitry Zakharov ◽  
Gor Lebedev ◽  
Artemy Irzhak ◽  
Veronika Afonina ◽  
Alexey Mashirov ◽  
...  
Keyword(s):  
Composite Material ◽  
Shape Memory ◽  
Shape Memory Composite

Fabrication and Characterization of TiNi/AL Smart Composites

2003 ◽  
Vol 785 ◽  
Author(s):  
Gyu Chang Lee ◽  
Jun Hee. Lee ◽  
Young Chul Park
Keyword(s):  
Composite Material ◽  
Shape Memory ◽  
Yield Stress ◽  
Room Temperature ◽  
Volume Fraction ◽  
Matrix Material ◽  
Al Alloy ◽  
Alloy Matrix ◽  
Strain Behavior ◽  
The Matrix

ABSTRACTAn attempt was made to fabricate composite material of an Al alloy matrix reinforced by TiNi shape memory fiber using a hot-press method and to investigate its microstructures and mechanical properties. The analysis of SEM and EDS showed that the composite material had good interface bonding. The stress-strain behavior of the composite material was evaluated at room temperature and 363 K as a function of pre-strain, and it showed that the yield stress at 363 K is higher than that at room temperature. It is also found that the yield stress of the composite material increased with increasing the amount of pre-strain and depended on the volume fraction of the fiber and heat treatment. The smartness of the composite could be given due to the shape memory effect of the TiNi fiber, which generated compressive residual stress in the matrix material when heated after being pre-strained. Microstructural observation revealed that interfacial reactions occurred between the matrix and fiber, creating two intermetallic layers.

scholarly journals Effects of Temperature on Mechanical Properties of Shape-Memory Composite Material

2009 ◽  
Vol 75 (759) ◽  
pp. 1556-1561 ◽  
Author(s):  
Teruko AOKI ◽  
Keigo FUKUNAGA ◽  
Nanae IINUMA ◽  
Masaki NAKASATO ◽  
Keitaro YAMASHITA ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Composite Material ◽  
Shape Memory ◽  
Effects Of Temperature ◽  
Shape Memory Composite

scholarly journals Optimization Shape-Memory Situations of a Stimulus Responsive Composite Material

Polymers ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 697
Author(s):  
Wei-Chun Lin ◽  
Fang-Yu Fan ◽  
Hsing-Chung Cheng ◽  
Yi Lin ◽  
Yung-Kang Shen ◽  
...  
Keyword(s):  
Composite Material ◽  
Shape Memory ◽  
Heating Temperature ◽  
Heating Time ◽  
Thermal Stimulus ◽  
Printing Technology ◽  
Stimulus Responsive ◽  
Recovery Angle ◽  
Shape Memory Composite ◽  
Printing Speed

In these times of Industrial 4.0 and Health 4.0, people currently want to enhance the ability of science and technology, to focus on patient aspects. However, with intelligent, green energy and biomedicine these days, traditional three-dimensional (3D) printing technology has been unable to meet our needs, so 4D printing has now arisen. In this research, a shape-memory composite material with 3D printing technology was used for 4D printing technology. The authors used fused deposition modeling (FDM) to print a polylactic acid (PLA) strip onto the surface of paper to create a shape-memory composite material, and a stimulus (heat) was used to deform and recover the shape of this material. The deformation angle and recovery angle of the material were studied with various processing parameters (heating temperature, heating time, pitch, and printing speed). This research discusses optimal processing related to shape-memory situations of stimulus-responsive composite materials. The optimal deformation angle (maximum) of the stimulus-responsive composite material was found with a thermal stimulus for an optimal heating temperature of 190 °C, a heating time of 20 s, a pitch of 1.5 mm, and a printing speed of 80 mm/s. The optimal recovery angle (minimum) of this material was found with a thermal stimulus for an optimal heating temperature of 170 °C, a heating time of 90 s, a pitch of 2.0 mm, and a printing speed of 80 mm/s. The most important factor affecting both the deformation and recovery angle of the stimulus-responsive composite material was the heating temperature.

Sign in / Sign up

Export Citation Format

Share Document