D-40 Stresses in Shape Memory Polymer Matrix Composites for Biomedical Applications

2004 ◽  
Vol 19 (2) ◽  
pp. 205-205
Author(s):  
D. Balzar ◽  
K. Gall ◽  
M. L. Dunn ◽  
Y. Liu
Keyword(s):  
Shape Memory ◽  
Polymer Matrix ◽  
Biomedical Applications ◽  
Polymer Matrix Composites ◽  
Shape Memory Polymer ◽  
Matrix Composites

scholarly journals Frozen Stresses in Shape Memory Polymer Composites

2018 ◽  
Vol 55 (4) ◽  
pp. 494-497
Author(s):  
Giovanni Matteo Tedde ◽  
Loredana Santo ◽  
Denise Bellisario ◽  
Leandro Iorio ◽  
Fabrizio Quadrini
Keyword(s):  
Shape Memory ◽  
Polymer Composites ◽  
Smart Materials ◽  
Polymer Matrix Composites ◽  
Shape Memory Polymer ◽  
Shape Memory Polymers ◽  
Experimental Tests ◽  
Matrix Composites ◽  
Flexural Test ◽  
Functional Behavior

Shape Memory Polymer Composites (SMPCs) are a class of smart materials in which the structural properties of long-fiber polymer-matrix composites and the functional behavior of Shape Memory Polymers (SMP) are combined together. In this study, the frozen stresses resulting from fixing a deformed shape have been investigated. Two different samples were manufactured, with and without significant shape memory properties, and a three point flexural test equipment was used in order to fix a deformed shape. The forces and the resulting stresses were measured during the samples deformation and after the shape freezing. The experimental tests have shown that the shape memory sample has a better ability to fix a deformed shape, since its frozen stress is higher in all the tests.

scholarly journals Comparative Study of the Mechanical and Water Absorption Behaviour of Basalt Fiber Reinforced Polymer Matrix Composites with Different Epoxies as Matrix for Biomedical Applications

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
R. Raghavendra Rao ◽  
S. Pradeep ◽  
Nasim Hasan ◽  
B. S. Shivashankara ◽  
Mohamed Abdelghany Elkotb ◽  
...  
Keyword(s):  
Water Absorption ◽  
Polymer Matrix ◽  
Biomedical Applications ◽  
Polymer Matrix Composites ◽  
Testing Machine ◽  
Basalt Fiber ◽  
Weight Ratio ◽  
Matrix Composites ◽  
Specific Strength ◽  
The Many

In comparison to conventional materials, polymer matrix composite materials have witnessed a surge in applicability due to their higher specific strength-to-weight ratio, abundant availability, and ease of shaping. Due to technological, economic, environmental, and societal challenges, bio-based fibers began to emerge quickly for use in industrial components. Due to its unique chemistry-related characteristics, basalt fiber holds a prominent position among the many bio-based fibers. So, it could be thought of used as a replacement for some components used in the biomedical equipments. In the present investigation, plain-woven basalt fiber at a constant percentage of 55% is added as reinforcement to three different epoxy resin-hardener combinations such as Lapox L12-Lapox K6, Araldite LY1564-Aradur 22962, and Araldite LY556-Aradur HY951 as matrix, and comparative studies are carried out. Fabrication is carried out by hand lay-up technique. Test specimens are prepared as per the respective ASTM standards by subjecting the laminate to water jet machining. Mechanical characterization such as tensile, flexural, and density tests is conducted for the test specimen using BISS-50 kN Universal Testing Machine (UTM). Water absorption tests are also conducted for 24 and 48 hours duration. From the results obtained, it is concluded that the highest tensile, flexural strengths are obtained for laminate L3 which used LY556 epoxy and HY951 hardener combination as matrix. Also, less rate of water absorption is seen for L3 laminate for both 24 and 48 hrs which makes it suitable for biomedical applications.

Polymer matrix composites and technology

2011 ◽  
Author(s):  
Ru-Min Wang ◽  
Shui-Rong Zheng ◽  
Ya-Ping Zheng
Keyword(s):  
Polymer Matrix ◽  
Polymer Matrix Composites ◽  
Matrix Composites
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