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.

Effect of carbon nanotubes modified with different concentrations of rare earth lanthanum on the mechanical and tribological properties of epoxy composites

2021 ◽  
pp. 002199832098764
Author(s):  
Mingren Jiang ◽  
Xianhua Cheng
Keyword(s):  
Carbon Nanotubes ◽  
Rare Earth ◽  
Polymer Matrix ◽  
Photoelectron Spectroscopy ◽  
Polymer Matrix Composites ◽  
Testing Machine ◽  
Matrix Composites ◽  
Mechanical And Tribological Properties ◽  
The Coefficient Of Friction ◽  
The Rare Earth

Rare earth modified acidified carbon nanotubes were prepared by functionalization of acidified carbon nanotubes with different concentrations of LaCl3. The modification results were characterized by Fourier-transform infrared and X-ray photoelectron spectroscopy. The rare earth successfully increases the surface activity of the acidified carbon nanotubes. Polymer matrix composites were prepared by using the rare earth modified acidified carbon nanotubes as the reinforcement in epoxy matrix. Mechanical properties were analyzed by Zwick Z100 testing machine and the tribological behaviors were test by multifunctional tribological tester. Compared with pure epoxy (epoxy resin), the mechanical strength of the best composite sample was increased by 50–120%, the coefficient of friction was reduced by 19.4% and the wear rate was reduced by approximately 40 times. The experimental results show that the RE concentration of 0.2–0.3 wt% has the most obvious influence on the properties of polymer composites. The mechanism of rare earth reinforcement in polymer matrix is analyzed and suggested.

Investigation of the Ballistic Performance of Two Different Polymer Matrix Composites

2007 ◽  
Vol 348-349 ◽  
pp. 241-244 ◽  
Author(s):  
Mehmet Colakoglu
Keyword(s):  
Kinetic Energy ◽  
Polymer Matrix ◽  
Polymer Matrix Composites ◽  
Weight Ratio ◽  
Fiber Composites ◽  
Matrix Composites ◽  
Ballistic Performance ◽  
Internal Organs ◽  
Major Injury ◽  
Polyethylene Fiber

Light armors are used to protect people against light weapons for military and nonmilitary purposes such as protecting police and civilians against criminals or protecting people even in hunting. Today, they are usually manufactured from polymer matrix composites due to their high stiffness/weight ratio. The good ballistic property means the measure of absorbability of the kinetic energy of a bullet or projectile without any major injury on the person. Designing the armor for only penetration is not enough for protection. The backside deformation of the armor must be also investigated because the projectile can produce not only bruises and lacerations of the surface of the skin, but can also damage internal organs. In this study, the backside deformation is determined experimentally and analytically for Kevlar 29/Polivnyl Butyral and Polyethylene fiber composites.

A Review on Mechanical and Acoustic Emission Behavior of Basalt Fiber Reinforced Composites

2018 ◽  
Vol 1148 ◽  
pp. 37-42
Author(s):  
Vemu Vara Prasad ◽  
Tanna Eswara Rao
Keyword(s):  
Acoustic Emission ◽  
Polymer Matrix ◽  
Failure Modes ◽  
Natural Fiber ◽  
Polymer Matrix Composites ◽  
Basalt Fiber ◽  
Fiber Reinforced Composites ◽  
Matrix Composites ◽  
Reinforced Composites ◽  
Fiber Reinforced

Now a day’s eco-friendly natural fiber used as the reinforcement for the fabrication of the light weight, lower cost and biodegradable polymer matrix composites. One of such available natural reinforcement for the composite material is basalt fiber. The present paper gives a review on how the basalt fiber reinforced polymer matrix composite behave when they are adhesively, riveted and hybrid joined with other reinforcements such as aluminum, which is used for the particular or other applications and which joint gives better efficiency , suited for given application were discussed and the three joining techniques were investigated. Behavior of basalt fiber reinforced composites for the frequencies at which frequencies the failures like adhesive failure, light fiber tear, and mixed failure modes will occur. These three types of failure modes are investigated with the help of acoustic emission monitoring system.

Wear Resistant Polymer Matrix Composites for Aerospace Applications

2004 ◽  
Author(s):  
Subhash K. Naik ◽  
James K. Sutter ◽  
Widen Tabakoff ◽  
Robert G. Siefker ◽  
Harold S. Haller ◽  
...  
Keyword(s):  
Polymer Matrix ◽  
Polymer Matrix Composites ◽  
Matrix Composites ◽  
Maintenance Costs ◽  
Specific Strength ◽  
Aerospace Applications ◽  
High Specific Strength ◽  
Test Conditions ◽  
Sand Erosion ◽  
Engine Components

Polymer matrix composites (PMCs) are attractive for use in propulsion engine components due to their high specific strength. The use of composites could be even more advantageous if the sand erosion life of the component were extended, thereby reducing maintenance costs. NASA Glenn Research Center (NASA GRC) and Rolls-Royce Corporation have developed erosion resistant coatings that can extend PMC component life and are applicable to current available and advanced high temperature PMCs. This paper describes the performance of SANPRES and SANRES, two similar erosion resistant coating systems that were subjected to engine test conditions on Rolls-Royce AE 3007 engine bypass vanes.

scholarly journals Water absorption by multifunctional protective epoxy composites

2018 ◽  
Vol 193 ◽  
pp. 03028 ◽  
Author(s):  
Vladimir Smirnov ◽  
Evgeniy Korolev
Keyword(s):  
Water Absorption ◽  
Polymer Matrix ◽  
Polymer Matrix Composites ◽  
Epoxy Composites ◽  
Expandable Graphite ◽  
Matrix Composites ◽  
Limited Information ◽  
Asymptotic Values ◽  
Central Composite ◽  
High Chemical Stability

Currently, thermoset-based polymer matrix composites are widely used in many areas of construction industry. Such composites demonstrate high compressive and flexural strength and are often characterized by high chemical stability under severe environmental conditions. One of the new promising areas of application of thermoset-based polymer matrix composites is the intumescent protective coating for metals; in normal conditions, such coatings can prevent the corrosion of metal constructions; during fire, expanded layer can prolong the time before critical failure. Water absorption is one of the primary characteristics of corrosion-protective materials; however, till now, there is only limited information about water absorption of multifunctional protective thermoset-based polymer matrix composites for intumescent coatings. In the present work, asymptotic values of water absorption of epoxy composites with polysiloxanes and fluorine-chlorine liquids are examined. The boundaries of control variables, within which the materials with required properties can be made, are determined. Silica, intercalated (expandable) graphite, and asbestos are used as fillers. Experiments were carried out in accordance with central composite experimental designs for full second-order regression models. It is shown that some admixtures can lead to notable decrease of water absorption.

Experimental and Numerical Validation of Unmanned Aerial Vehicle Structure Fabricated using Graphene based Polymer Matrix Composites

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
R. VijayKumar ◽  
S.K. Maharana
Keyword(s):  
Glass Fiber ◽  
Polymer Matrix ◽  
Polymer Matrix Composites ◽  
Peak Load ◽  
Experimental Studies ◽  
Weight Ratio ◽  
Matrix Composites ◽  
Glass Fiber Reinforced ◽  
Layer Composite ◽  
Strength And Stiffness

This paper describes the investigation of the polymer matrix composite laminate of epoxy resin systems and graphene oxide (GO) reinforced with glass fiber. The laminates of epoxy glass fiber reinforced with GO has been fabricated by hand layup method and the fabricated laminate is further cut into test specimens as per ASTM standards and tested for their strength and stiffness. As per the experimental studies, the strength to weight ratio is increased. An attempt has also been made to observe how the different volume addition (1.5%, 3%, 4.5% and 6%) of GO to epoxy matrix has affected the tensile strength, Young’s modulus and % elongation of the laminate made of composite. The outcome of the experimental characterization of the composites has encouraged further choosing epoxy / GO (1.5% by volume) towards fabricating a simplified version of UAV. Laminate code EPWM12, an epoxy / GO woven mat 12-layer composite, has the satisfying peak load carrying capacity as well as three-point flexural strength as opposed to other four materials considered in this study. The Monte Carlo simulation showed that likelihood of EPWM12 material being safe for UAV is 96%.

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