Search

In this study, a combination of “Cordia Dichotoma” natural fiber and “granite powder” as filler has been reinforced into epoxy resin making a hybrid composite. In this study, unused industrial wast...

Nowadays, research attention on composite materials accentuates where not only was their unique attributes agglomerated-alleviated weight and density, elevated impact and specific strengths, but al...

Usage of composites with natural fiber reinforcement is drastically increasing in recent times because of their low density, biodegradable nature, and low cost. However, natural fibers have certain...

In recent days, use of fiber reinforced polymer composites is growing rapidly due to their better mechanical properties like tensile strength, flexural strength, and impact strength; and also due to their low cost and low density. In the present work, Burmese silk orchid fibers are used as reinforcement and epoxy as matrix material to fabricate the composite material. Using hand-layup technique, composite specimens were prepared by increasing the weight of the fibers as 5, 10, 15, and 20 grams. Test specimens are cut as per the ASTM standards. Tensile strength, flexural strengths are determined using Instran Universal Testing Machine and impact strength of the samples is measured using Izod impact testing machine. Experimental results are validated.

These days, NFCs are accentuating the greatest potential for engineers in numerous applications. A natural fiber polymer composite (NFC) offers the designer to acquire the fundamental properties in a munificent degree by the choice of fibers and matrix. Tapsi fiber reinforced polyester composites were made up with a statute of blends. The tensile, flexural, and impact properties of Tapsi fiber reinforced polyester composites were studied. The mechanical properties such as tensile strength, flexural strength, and impact strength of the Tapsi fiber reinforced polyester composites were assessed according to the ASTM guidelines. The impacts of alkali treatment (NaOH) of the fibers on these properties were likewise studied. It was observed that the mechanical properties of the polyester composite improved with increment in the fiber content. These properties were observed to be far and away superior when alkali-treated tapsi fibers were utilized as a part of the composites.

In past few decades wind turbines are manufactured mainly by using standard components. Later, turbines were fabricated by using special components only. The best way to solve this is by using composite materials in wind turbine blades. Many of the composites are comprises of two materials. One material i.e., which binds together a bunch of fibres matrix (epoxy resin) and the second material (the reinforcement) adjacent these fibres. These days few researchers have aspired in utilizing the diversified applications of composite materials as the materials of the future. In this perspective wind turbine with three blades (Flax fibre) are designed and fabricated using hand-layup fabrication method and this process considers fiber in weight percentage of 5%, 10%, 15%, 20% and 25%. Moulds are prepared by using these combinations and undergone different tests like flexural, tensile and impact and the best suited combination of weight is used in turbine blade manufacturing. These turbine blade samples are used for understanding of different air velocities and different specifications of wind turbine such as power developed by wind turbine, power developed by wind, power co-efficient, speed of wind turbine are calculated and compared with existing aluminium material blades used in wind turbine.In past few decades wind turbines are manufactured mainly by using standard components. Later, turbines were fabricated by using special components only. The best way to solve this is by using composite materials in wind turbine blades. Many of the composites are comprises of two materials. One material i.e., which binds together a bunch of fibres matrix (epoxy resin) and the second material (the reinforcement) adjacent these fibres. These days few researchers have aspired in utilizing the diversified applications of composite materials as the materials of the future. In this perspective wind turbine with three blades (Flax fibre) are designed and fabricated using hand-layup fabrication method and this process considers fiber in weight percentage of 5%, 10%, 15%, 20% and 25%. Moulds are prepared by using these combinations and undergone different tests like flexural, tensile and impact and the best suited combination of weight is used in turbine blade manufacturing. These turbine blade samples are used fo...

Environmental and societal concerns such as pollution, disposal of solid waste, requirement of different conflicting properties for materials in varied applications and cost are the main reasons for the development of new materials from the existing materials. The concerns may possibly be overcome by substituting natural fibers for synthetic fibers. In this study, a hybrid composite was developed by reinforcing the natural fiber “cordia dichotoma” and filler “granite powder” into polyester resin. This composite was fabricated using hand lay-up method. Cordia dichotoma fibers were surface treated with NaOH for reducing the hydrophilic nature of the fiber. Unused industrial waste in the form of granite powder obtained from the granite polishing industry is utilized as reinforcement in polymer composite. The hybrid composite was prepared by reinforcing a constant cordia dichotoma fiber content of 20 wt % and varying the granite powder weight (wt. %) percentages (0, 5, 10, 15, and 20) into polyester resin. Mechanical properties (tensile, flexural and impact) of hybrid composites were investigated. The novelty of this work lies in utilization of granite powder sourced from industrial waste utilized as filler material. Granite, as one of the hard materials, may improve wear and other mechanical properties. Following the results obtained, granite powder could be evidenced as a good filler material for the betterment of composites mechanical properties. Also, the ability of this filler material is proved in decreasing water absorption and chemical resistance. Scanning electron microscope (SEM) analysis was performed to investigate the bonding and distribution of granite powder within both the fiber as well as resin in the composite. Besides, the presence of chemical functional groups in the composite was traced by Fourier transform Infrared spectroscopy (FTIR). Also, Thermo-gravimetric analysis (TGA) was carried out and the composite was found to be thermally stable up to 415 °C.