Study of Hybrid FRP Composite Made of Flax and Hemp Fibers with Kevlar (original) (raw)
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EXPERIMENTAL INVESTIGATION OF TENSILE AND IMPACT BEHAVIOUR OF HEMP FLAX HYBRID COMPOSITE
Developments in Engineering and Technology urging the need to identify and improve a wide variety of materials using the natural fiber. Composite plays a vital role in manufacturing and defense industries. In this work, Natural fiber, namely Hemp and flax are used as reinforcement along with epoxy resins to enhance Mechanical properties. These fibers are used because of easy extraction methods and more economical. In this research work, hemp and flax composites are prepared using hand lay-up method as mono, and hybrid composites. Various mechanical tests have been carried out to determine the mechanical characteristic of the composite laminate and the results are compared.
EXPERIMENTAL INVESTIGATION OF FLEXURAL AND HARDNESS BEHAVIOUR OF HEMP FLAX HYBRID COMPOSITE
Composites are nowadays used in automobiles, aerospace and marine engineering applications due to their low cost and less weight. This paper involves the fabrication and testing the flexural and hardness behavior of hemp and flax hybrid composite. In this work, the laminates are prepared by the hand-layup method. Epoxy resin with HY951 hardener is used as the binding agent for fabrication of a hybrid composite. Woven glass fiber (GFRP) layers are used on both sides of the laminate to increase strength and stiffness of the composites. The natural fibers layers are sandwiched between the GFRP layers. The natural fibers have been chosen on the basis of, its strength, low density, degradability and its availability. The result showed that hybrid composite laminate has superior flexural and hardness behavior than other laminates.
Journal of Natural Fibers, 2017
In the present study, an attempt has been made to develop and characterize natural fiber-based composites (jute/epoxy, hemp/epoxy, flax/epoxy) and their hybrid composites (jute/hemp/epoxy, hemp/flax/epoxy, and jute/hemp/flax/ epoxy) using hand-lay-up technique. Mechanical characterization (tensile, flexural, impact, and hardness test) of the developed composites was performed. The interface between fiber and matrix was examined using scan electron microscopy (SEM). Among (jute/epoxy, hemp/epoxy, flax/epoxy), flax/epoxy composite has shown higher hardness (98 ShoreD) and tensile strength (46.2 MPa) whereas better flexural and impact strength have been shown by hemp/ epoxy (85.59 MPa) and jute/epoxy (7.68 kJ/m 2) composites respectively. Results showed that hybrid composites observed better mechanical properties. Jute/ hemp/flax/epoxy hybrid composite showed the highest tensile strength, modulus and impact strength of 58.59 MPa, 1.88 GPa, and 10.19, kJ/m 2 , respectively. Jute/hemp/epoxy hybrid composite achieved the maximum flexural strength of 86.6 MPa.
IRJET, 2020
The synthetic polymer composite filled with natural fillers became an important area of research and development in recent years due to their applications in various fields. The aim of present work is to fabricate and evaluate the mechanical properties of hybrid laminated reinforced with Kevlar, hemp fibers & crab powder. Composites by varying the orientations of hemp fiber 0°,30°, 45°, 60° and maintaining the constant orientation of Kevlar fiber with 0° were prepared using hand layup method because this method was easy to fabricate, with low tooling cost and resulting in good surface finish. The tensile, flexural and impact strength of the samples are evaluated. The variations in properties with respect to change in the orientations of hemp fiber were obtained and represented by graphs. The composite with 60° orientations of hemp fiber have shown better results in tensile (281.194 N/mm^2), flexural (1632.1N/mm^2) and Impact tests (8.66 J).
Study on Static and Dynamic Properties on Hemp Natural Fiber Reinforce Polyester Composite Material
Mechanical properties of hemp fibers and strong laminates were determine to assess the prospect of using it as new material in engineering applications. Samples were fabricated by the hand lay-up technique (20:80 fiber and matrix magnitude relation by weight) and the properties were evaluated using the UTM material testing system. The mechanical properties were tested and showed that hemp laminate has the tensile strength of 5.5 KN, bending strength of 4.380KN and frequency and damping for healthy specimen. Results indicated that natural fibers square measure of interest for inexpensive engineering applications and should deal with artificial hemp fibers once a high stiffness per unit weight is fascinating. Results to boot indicated that future analysis towards important enhancements in compressive and impact strength of these styles of composites.Have to be required to specialize in the optimization of fiber strength rather than surface bond strength.
2012
This work concerns the production by vacuum infusion and the comparison of the prope rties of different hybrid composite laminates, based on glass, flax and hemp fibers i n different combinations, keeping constant basalt laminates as the inner core of the layer d material and a 21±1% fibers volume throughout. The laminates have been subjected to tensile, fl exural and falling weight impact tests. Mechanical tests show quite limited dif ferences between the three hybrid configurations, a fact which is also suggested by the not large variation i n material density obtained. The main differences have been observed dealing with falling weight properties, carried out at energies between 6 and 24 Joules using a half-inch impactor with a mass of 1.25 kg. Here, the hybrid configuration containing together flax and hemp fibe rs shows some energy dissipation properties with the onset of complex damage modes in the laminate.
INVESTIGATION ON MECHANICAL PROPERTIES OF HEMP-E GLASS FIBER REINFORCED POLYMER COMPOSITES
Natural fiber composite is currently a leading module in the world of composites. It is due to many of its features such as freely available, easy processing, low cost, ability to replace usage of Glass fiber (Synthetic fiber), better strength properties and ecofriendly. They find useful applications in various fields from domestic to automotive sector as of now. Natural fibers with good content of lignocellulose, low density, and better elongation percentage are chosen for manufacturing of composites of above mentioned applications. Unidirectional & Continuous natural fiber composites are said to be anisotropic and having predominant mechanical properties. While designing these composites out of many factors, amount or volume fraction of fibers also considered carefully. In this study untreated continuous Hemp fiber-Bi directional woven E Glass fiber reinforced hybrid polymer matrix composite laminates are developed and tested for its mechanical properties such as tensile, compression and flexural as per ASTM standards by varying fibers proportions. The obtained results yields that natural fiber composites performed equally or more than synthetic fibers such as Glass fibers.
DEVELOPMENT OF HEMP FIBRE REINFORCED POLYPROPYLENE COMPOSITE
Nonwoven mats from hemp and polypropylene fibres in various proportions were produced and hot pressed to make composite material. The effect of fibre content and the anisotropy in nonwoven mat resulting from the carding technology were examined on the three-point bending, tensile and impact properties of resultant composite material. Because of the hydrophilic nature and poor dimensional stability of cellulosic fibres due to swelling, the effect of water sorption on mechanical performances was also investigated. Optimal mechanical properties were achieved in composites made from 40-50 % of hemp fibre by weight. As it was expected, better mechanical properties were found in the specimens cut from the composite sheets parallel to the direction of carding. A strong decrease in three point bending properties was noticed after immersing the composite samples in the distilled water for 19 days, while the impact strength increased. Double carding of raw materials resulted into decreased anisotropy in composite material.
Physical Properties of Glass-Hemp-Banana Hybrid Fiber Reinforced Polymer Composites
Indian Journal of Science and Technology, 2017
Background/Objectives: In this experimental work the effect of mechanical properties on incorporation of glass fibre with treated banana-hemp fibres has been studied. Methods/Statistical analysis: Banana and hemp fibres are extracted by enzymatic processes for successfully removing lignin. The alkaline solution was used to treat the fibres since it is increases their mechanical strength. The banana, hemp and glass fibres were reinforced with the epoxy matrix and the hybrid composites were fabricated by using hand layup process. Alternative orientations of fibres were used for the fabrication of the laminates in order to improve their strength. Findings: As per the ASTM standards, test specimens were prepared from the laminates with the stacking sequence of glass/banana fibre, glass/hemp fibre and glass/banana/hemp fibre. The mechanical characteristics were obtained by impact test, tensile test and flexural test for the fabricated samples. The interfacial analysis was conducted using scanning electron microscope to estimate voids, fractures and fibre pull out. The experimental result shows that the glass/banana/hemp fibre composite exhibits maximum tensile strength than the other two combinations. The hemp-glass fibre composite holds the maximum flexural strength followed by glass/hemp/banana fibre composites. The glass/banana fibre composites hold maximum impact energy and the value of the composites varies from 7.33 to 9.33 Joules. Application/Improvements: These composites are performing well in all kind of mechanical loadings. It is suggested that these materials can be used in the relevant fields.
Mechanical Characterization of Hemp Fiber Reinforced Polyester Composites: A Review
2016
The natural fibers are bio-form of plant and animal skin. The natural fibers are abundant in quantity. They possess lightweight and high strength capabilities. The use of those fibers leads no harms in environment, are biodegradable and renewable source of energy. The paper reviews different types of natural fiber, among them hemp fiber, and recognize their mechanical and chemical characteristics. The paper investigates the composite form, which is formed using the natural fiber hemp and polyester resin, varying their proportion and obtaining its mechanical and other properties. The composites made are proposed to be used in other applications. Keywords: Natural fibers, hemp and its properties, composite form Cite this Article Biren J. Saradava, Abhishek J. Kathwadia, Ajit D. Gorviyala, Vatsal K. Joshi . Mechanical Characterization of Hemp Fiber Reinforced Polyester Composites: A Review. Journal of Polymer & Composites. 2016; 4(1): 1–3p.