Abstract
The use of synthetic fibers in composite materials has a negative impact on the environment. One way to reduce this impact is to replace synthetic fibers with natural fibers. A natural fiber that has the potential as a mixed material in the manufacture of composite materials is citronella (Cymbopogon nardus) fiber. This study aims to determine the effect of volume fractions 40%, 50%, 60%, and 70% of citronella fiber with polyester resin matrix BQTN 157 on tensile strength. The process of making composites used the hand lay-up method. The specimen was formed according to the ASTM D3039 standard and the tensile strength of the specimen was tested by using a Universal Testing Machine (UTM). From the results of the study, the maximum tensile strength was found in the fiber volume fraction 70% of 77.35 MPa, the strain is 6.57%, and the modulus of elasticity is 1.177 GPa. This study indicates that fiber volume fraction affects the tensile strength of composite materials. Hence, the manufacture of composite materials which have good strength is influenced by many things such as raw materials, matrices, mixture composition, and methods.
Highlights
The development of materials technology, including composites, is still in demand by the general population
This study focused on the effect of fiber volume fractions 40%, 50%, 60%, and 70% with resin matrix BQTN 157 Yukalac on the tensile strength of composite materials
It can be seen in table 3 the results of the average tensile test on fiber volume fractions of 40%, 50%, 60%, and 70% of the resin yukalac BQTN 157
Summary
The development of materials technology, including composites, is still in demand by the general population. It is due to the advantages of composite materials which are constructed, lightweight, lowpriced , and environmentally friendly [1]. The most common reinforcement fiber used by the community in composites processing is carbon, glass, and ceramics. The mechanical properties of composite materials are influenced by several factors, including the manufacturing process and the constituent materials[3]. The weakness of synthetic fiber composites is relatively overpriced and it has a tendency to damage the environment[5]. Scientists have found a replacement fiber that is environmentally friendly, non-toxic, relatively inexpensive , and its strong ability can match synthetic fibers[6]
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