Physical and Mechanical Behavior of Hemp and Nettle Fiber-Reinforced Polyester Resin-based Hybrid Composites (original) (raw)
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Mechanical Characterization of Hemp Fiber Reinforced Polyester Composites: A Review
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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.
Study on Static and Dynamic Properties on Hemp Natural Fiber Reinforce Polyester Composite Material
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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.
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.
International Journal of Scientific Research in Science, Engineering and Technology, 2019
Modern composite materials constitute a significant proportion of the engineered materials market ranging from everyday products to sophisticated niche applications. While composites have already proven their worth as weight-saving materials, the current challenge is to make them cost effective. The natural origin of these materials causes, in general, a wide range of variations in properties depending mainly on the harvesting location and conditions, making it difficult to select the appropriate fibre for specific applications. Natural fibres as effectively as possible to produce good quality fibre- reinforced polymer composites forvarrious engineering applications .In the experiments of tensile, flexural and impact tests were carried out for sisal, fibre hemp fibre hybrid- reinforced epoxy composites. And it able to replace the synthetic fibres that it has the eminent benefits of like low density, small manufacturing cost, its availability, ease of manufacture, low development energy, non-abrasive, worthy acoustic proper biodegradability, reasonable mechanical strength, renewability. Composite were made-up by hand lay-up method with the bidirectional natural fibres and epoxy resin in a mould and cured under gradual pressure. In this research paper mechanical behaviour such as tensile, flexural, indentation capacity and reinforced hybrid composite materials (BHSHC) studied. The purpose of this work to investigate, the mechanical characterization of the hybrid composite material. Sample was prepared and tested accordance to the ASTM standards. Characterization of hemp fibres was carried out with fibres obtained with low handling damage and deliberation damage to get an indication of how strong cellulose based fibres that can be produced from hemp.
Fabrication and Investigation of Mechanical Properties Hemp Fiber Rienforced Polyester Composites
Hemp naturally grows in the Asian is a variety of the Cannabis sativa plant species that is grown especially for the industrial purposes of its derived products. It is used for a range of commercial products are including paper, clothing, insulation, biodegradable plastics, textiles, paint, biofuel, animal feed, and food. The main aimed of this work is to fabricate and investigate mechanical properties of hemp natural fiber reinforced polyester composites. The fibers were treated with 10% of NaOH, for 2-3 hours under constant stirring and permit for a day at room temperature and then dried in open air for 3-4 days. The chemical treatment is used to increase the tensile strength and removes the moisture content from the fibers. Test mechanical properties such as Impact strength, Flexural properties (Flexural strength, Flexural modulus) and Tensile properties (tensile strength, tensile modulus) when subjected to varying weights of fiber (0.5, 1.0, 1.5, 2 grams) were determined.
Comparisons between some composite materials reinforced with hemp fibers
Materials Today: Proceedings, 2019
For this research we have built original composite materials that have a dammar-based bio-resin as matrix and are reinforced with hemp fibers. These composite materials have been subjected to tensile tests to find their mechanical characteristics and elastic constants: ultimate tensile strength, Young's modulus, Poisson's ratio and elongation at break. In the second part of the paper we have studied other composite samples with dammar-based resin/hemp fibers and classical composite samples epoxy/hemp fibers. By recording their free vibrations, we have determined the damping factor with respect to their mass, length, loss factor, dynamic flexural stiffness and dynamic Young's modulus respectively. In the end, we have compared the studied samples with other composite materials reinforced with hemp fibers that have been studied in the scientific literature.
2016
This research work has been focusing on Hemp fibers has an alternative reinforcement for fiber reinforced polymer composites due to its eco-friendly and biodegradable characteristics. This work has been carried out to evaluate the mechanical properties of hemp/E-glass fabrics reinforced polyester hybrid composites. Vacuum bagging method was used for the preparation of six different kinds of hemp/glass fabrics reinforced polyester composite laminates as per layering sequences. The tensile, flexural, impact and water absorption tests of these hybrid composites were carried out experimentally according to ASTM standards. It reveals that an addition of E-glass fabrics with hemp fabrics can increase the mechanical properties of composites and decrease the water absorption of the hybrid composites.
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.
IRJET, 2022
The recent approach towards the biodegradable, ecological, and recyclable materials have results in a drastic shift from a man-made/synthetic to a natural fiber. Thus, the usage of natural fiber such as hemp fibers as reinforcement in composite materials has expanded in recent years. Hemp fibers are produced from the stem, which make them stiff and these are the properties required for composite material reinforcement. This fibers offer mechanical properties similar to glass fibers. The diversity in their qualities, on the other hand, is their main flaw. Hemp fiber combining with thermoplastic, thermoset, and natural matrices have excellent mechanical characteristics. Several hemp fiber surface treatments, which were employed to increase fiber and matrix interfacial bonding, significantly improved the mechanical properties of the resultant material.