Flexural stiffness variations of woven carbon fiber composite/shape memory polymer hybrid layered beams

2013 ◽  
Vol 49 (2) ◽  
pp. 209-216 ◽  
Author(s):  
Tomo Takeda ◽  
Yasuhide Shindo ◽  
Fumio Narita
Keyword(s):  
Carbon Fiber ◽  
Shape Memory ◽  
Fiber Composite ◽  
Shape Memory Polymer ◽  
Flexural Stiffness ◽  
Carbon Fiber Composite ◽  
Polymer Hybrid ◽  
Layered Beams

Shape Memory Composite Hands for Space Applications

2015 ◽  
Author(s):  
Fabrizio Quadrini ◽  
Giovanni Matteo Tedde ◽  
Loredana Santo
Keyword(s):  
Shape Memory ◽  
Composite Structures ◽  
Polymer Matrix Composites ◽  
Fiber Composite ◽  
Shape Memory Polymer ◽  
Small Scale ◽  
Carbon Fiber Composite ◽  
Space Applications ◽  
First Case ◽  
Shape Memory Composite

Shape memory composites combine structural properties of continuous-fiber polymer-matrix composites with functional behavior of shape memory polymers. In this study, the production of shape memory composite structures for aerospace applications is described. Small-scale grabbing systems were prototyped as they could be used for space cleaning operations. Composite hands were manufactured by using two carbon fiber composite layers with a shape memory polymer interlayer. They were produced in the closed-hand configuration and subsequently opened in the memorizing step. Due to heating, composites tended to recover the initial closed configuration, allowing to grab small objects. Two different shapes (cylindrical and cubic) were considered for composite hands. In the first case, the shape memory behavior was given to the entire structure whereas, in the second case, shape memory properties were provided only to folding zones. As a result, a good shape recovery was observed in both cases but part weight was already not negligible also in these small-scale systems.

Shape Recovery of Polymeric Matrix Composites by Irradiation

2016 ◽  
Vol 879 ◽  
pp. 1645-1650 ◽  
Author(s):  
Loredana Santo ◽  
Denise Bellisario ◽  
Fabrizio Quadrini
Keyword(s):  
Shape Memory ◽  
Fiber Composite ◽  
Shape Memory Polymer ◽  
Recovery Phase ◽  
Initial Configuration ◽  
Conventional Heating ◽  
Carbon Fiber Composite ◽  
Space Applications ◽  
Aerospace Applications ◽  
Air Gun

Shape memory composite (SMC) structures are of great interest for the aerospace applications. In previous works, the authors have studied SMC lab-scale deploying prototypes manufactured by using two carbon fiber composite layers with a shape memory polymer interlayer. The prototypes were produced in an initial configuration and subsequently it was changed in the memorizing step. The initial configuration was then recovered by heating. Memorization and recovery phases were performed by means of conventional heating (by hot air gun or heater plate). In this work, for the first time the authors evaluate the SMC heating by means of radiating lamps. A square plate was purposely produced and recovered after different memory steps. Time, temperature and recovery are measured during and after the tests. The radiating lamp power and type, and the distance of the SMC from the lamp are fundamental parameters for the heating phase. As result of the irradiation tests, the initial configuration can be successfully recovered without failures. This study is especially aimed to future space applications in which the deployment (recovery) phase will be initiated only by exposure to solar radiation.

Prestressed Carbon Fiber Composite Overwrapped Gun Tube

2008 ◽  
Author(s):  
Andrew Littlefield ◽  
Edward Hyland ◽  
Jack Keating
Keyword(s):  
Carbon Fiber ◽  
Fiber Composite ◽  
Carbon Fiber Composite

scholarly journals Lightweight Cellulose/Carbon Fiber Composite Foam for Electromagnetic Interference (EMI) Shielding

Polymers ◽  
2018 ◽  
Vol 10 (12) ◽  
pp. 1319 ◽  
Author(s):  
Ran Li ◽  
Huiping Lin ◽  
Piao Lan ◽  
Jie Gao ◽  
Yan Huang ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Carbon Fibers ◽  
Electromagnetic Interference ◽  
Fiber Composite ◽  
Carbon Fiber Composites ◽  
Shielding Effectiveness ◽  
Electromagnetic Interference Shielding ◽  
Carbon Fiber Composite ◽  
Foaming Process ◽  
Long Carbon Fibers

Lightweight electromagnetic interference shielding cellulose foam/carbon fiber composites were prepared by blending cellulose foam solution with carbon fibers and then freeze drying. Two kinds of carbon fiber (diameter of 7 μm) with different lengths were used, short carbon fibers (SCF, L/D = 100) and long carbon fibers (LCF, L/D = 300). It was observed that SCFs and LCFs built efficient network structures during the foaming process. Furthermore, the foaming process significantly increased the specific electromagnetic interference shielding effectiveness from 10 to 60 dB. In addition, cellulose/carbon fiber composite foams possessed good mechanical properties and low thermal conductivity of 0.021–0.046 W/(m·K).

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