Evaluation of mechanical properties of palm fiber/glass fiber and epoxy combined hybrid composite laminates

In this paper, the impact behavior of Kevlar/glass fiber hybrid composite laminates was investigated by performing the drop weight impact test (ASTM D7136). Composite laminates were fabricated using vacuum bagging process with an epoxy matrix reinforced with twill Kevlar woven fiber and plain glass woven fiber. Four different types of composite laminates with different ratios of Kevlar to glass fiber (0:100, 20:80, 50:50 and 100:0) were manufactured. The effect of Kevlar/glass fiber content on the impact damage behavior was studied at 43J nominal impact energy. Results indicated that hybridization of Kevlar fiber to glass fiber improved the load carrying capability, energy absorbed and damage degree of composite laminates with a slight reduction in deflection. These results were further supported through the damage pattern analysis, depth of penetration and X-ray evaluation tests. Based on literature work, studies that have been done to investigate the impact behaviour of woven Kevlar/glass fiber hybrid composite laminates are very limited. Therefore, this research concentrates on the effect of Kevlar on the impact resistance properties of woven glass fibre reinforced polymer composites.

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Influence of structural physiognomies of pawpaw fiber–glass fiber hybrid–based green composites on mechanical properties and biodegradation potential of epoxy composites

Journal of Reinforced Plastics and Composites ◽

10.1177/07316844211017646 ◽

2021 ◽

pp. 073168442110176

Author(s):

Oluwole I Oladele ◽

Baraka A Makinde-Isola ◽

Adeolu A Adediran ◽

Oluwaseun T Ayanleye ◽

Samuel A Taiwo

Keyword(s):

Mechanical Properties ◽

Glass Fiber ◽

Tensile Strain ◽

Control Sample ◽

Linear Structure ◽

Fiber Glass ◽

Plant Fibers ◽

Fixed Amount ◽

Plant Stem ◽

Fractured Surface

The demand for durable and sustainable eco-friendly materials in recent times has caused many researchers to consider the use of plant fibers in composite development. In this research, the suitability of treated pawpaw fiber as a substitute for glass fiber was considered. The pawpaw fiber was extracted from the plant stem by dew retting and treated before been incorporated into the epoxy matrix. Two distinct fiber structures in linear and network forms were identified, separated, and used for the development of the composites. The composites were produced by incorporating a fixed amount of pawpaw fiber with a varied amount of glass fiber within 3–15 wt% in epoxy-based polymer matrix after which mechanical and biodegradation tests were carried out on the developed samples. Fractured surface morphology was also observed using a scanning electron microscope. The results revealed that the fiber structures influence the properties of the material. While mechanical properties were mostly enhanced by treated linear structure pawpaw fiber, biodegradation was highly promoted by treated network structure pawpaw fiber. Tensile (except for strain), hardness, and flexural properties were enhanced by the linear-structured treated pawpaw fiber, while biodegradability, impact, and tensile strain were improved by the network-structured treated pawpaw fiber compared to the control sample.

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Experimental and theoretical investigations into the mechanical properties of thermoplastic titanium-FRP hybrid composite laminates

10.14711/thesis-991012889468203412 ◽

2020 ◽

Author(s):

MohammadErfan Kazemi

Keyword(s):

Mechanical Properties ◽

Hybrid Composite ◽

Composite Laminates ◽

Theoretical Investigations

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Effect of Heat Sinks on Visco-Elastic & Mechanical Properties of EPDM Based Ablative Composites

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.442.52 ◽

2010 ◽

Vol 442 ◽

pp. 52-58

Author(s):

M.A. Bashir ◽

H. Ahmad ◽

R. Ahmed ◽

R.A. Alvi ◽

Mohammad Bilal Khan

Keyword(s):

Mechanical Properties ◽

Carbon Fiber ◽

Glass Fiber ◽

Heat Sinks ◽

Elastic Behavior ◽

Fiber Glass ◽

Adverse Conditions ◽

Reinforcing Fillers ◽

Heat Shielding ◽

Reinforcing Filler

Ablative composites are heat shielding, protective materials that are being used in aerospace industry to protect inner hardware and sensitive devices. The aero dynamic vehicles have to face high stresses, ultra high temperature and adverse conditions of air friction. It is required to develop the materials with light weight and high modulus. EPDM, being heat and ozone attack resistant is the best candidate for the preparation of ablative composites by introducing different heat sinks such as silica, glass fiber, carbon fiber, asbestos, carbon and their combinations have been studied in this work. The prepared materials were tested and it was found that visco elastic behavior of the composites affected by the addition of reinforcing filler (carbon, silica), semi-reinforcing filler (carbon fiber, glass fiber) and non-reinforcing filler (asbestos powder). Mechanical properties tested at different rates, revealed the improvement in tensile strength and % elongation in case of reinforcing and semi-reinforcing fillers but showed adverse effect in case of non-reinforcing fillers. Rheological investigations of these novel composites shows that moony viscosity of the materials containing glass fiber, carbon fiber, silica decreases in the order glass fiber > carbon fiber > silica.

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Dynamic mechanical properties of epoxy based PALF/basalt hybrid composite laminates

Materials Research Express ◽

10.1088/2053-1591/ab3dd7 ◽

2019 ◽

Vol 6 (10) ◽

pp. 105343 ◽

Cited By ~ 2

Author(s):

Parameswara Rao Venkata Doddi ◽

Ratnam Chanamala ◽

Siva Prasad Dora

Keyword(s):

Mechanical Properties ◽

Hybrid Composite ◽

Composite Laminates ◽

Dynamic Mechanical Properties ◽

Dynamic Mechanical

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Investigations on the Mechanical Properties of Glass Fiber/Sisal Fiber/Chitosan Reinforced Hybrid Polymer Sandwich Composite Scaffolds for Bone Fracture Fixation Applications

Polymers ◽

10.3390/polym12071501 ◽

2020 ◽

Vol 12 (7) ◽

pp. 1501 ◽

Cited By ~ 4

Author(s):

Soundhar Arumugam ◽

Jayakrishna Kandasamy ◽

Ain Umaira Md Shah ◽

Mohamed Thariq Hameed Sultan ◽

Syafiqah Nur Azrie Safri ◽

...

Keyword(s):

Mechanical Properties ◽

Water Absorption ◽

Glass Fiber ◽

Bone Fracture ◽

Hybrid Composite ◽

Bone Structure ◽

Hybrid Composites ◽

Sisal Fiber ◽

Composite Scaffolds ◽

Study Results

This study aims to explore the mechanical properties of hybrid glass fiber (GF)/sisal fiber (SF)/chitosan (CTS) composite material for orthopedic long bone plate applications. The GF/SF/CTS hybrid composite possesses a unique sandwich structure and comprises GF/CTS/epoxy as the external layers and SF/CTS/epoxy as the inner layers. The composite plate resembles the human bone structure (spongy internal cancellous matrix and rigid external cortical). The mechanical properties of the prepared hybrid sandwich composites samples were evaluated using tensile, flexural, micro hardness, and compression tests. The scanning electron microscopic (SEM) images were studied to analyze the failure mechanism of these composite samples. Besides, contact angle (CA) and water absorption tests were conducted using the sessile drop method to examine the wettability properties of the SF/CTS/epoxy and GF/SF/CTS/epoxy composites. Additionally, the porosity of the GF/SF/CTS composite scaffold samples were determined by using the ethanol infiltration method. The mechanical test results show that the GF/SF/CTS hybrid composites exhibit the bending strength of 343 MPa, ultimate tensile strength of 146 MPa, and compressive strength of 380 MPa with higher Young’s modulus in the bending tests (21.56 GPa) compared to the tensile (6646 MPa) and compressive modulus (2046 MPa). Wettability study results reveal that the GF/SF/CTS composite scaffolds were hydrophobic (CA = 92.41° ± 1.71°) with less water absorption of 3.436% compared to the SF/CTS composites (6.953%). The SF/CTS composites show a hydrophilic character (CA = 54.28° ± 3.06°). The experimental tests prove that the GF/SF/CTS hybrid composite can be used for orthopedic bone fracture plate applications in future.

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