ANALISA KEKUATAN KOMPOSIT SANDWICH BERPENGUAT FIBERGLASS DENGAN CORE STYROFOAM EXTRUDED POLYSTYRENE

NUSANTARA, TEGAR ARYA and Chandra, Hendri (2025) ANALISA KEKUATAN KOMPOSIT SANDWICH BERPENGUAT FIBERGLASS DENGAN CORE STYROFOAM EXTRUDED POLYSTYRENE. Undergraduate thesis, Sriwijaya University.

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Abstract

In recent years, the use of drones or unmanned aerial vehicles (UAVs) has significantly increased across various sectors, including military, agriculture, and industry. This growth is driven by technological advancements and decreasing production costs, making drones more accessible to a wide range of users. Currently, drones are being utilized as material transport vehicles in hard-to-reach construction areas, proving to be more effective and efficient for transporting goods quickly and at lower costs compared to constructing access roads, which can harm the environment. Carbon fiber composites have become one of the most commonly used materials for drone chassis due to their high strength and lightweight properties. However, carbon fiber also has limitations, such as high production costs, poor impact resistance, and difficulty in recycling. As an alternative, sandwich composite materials reinforced with fiberglass and a core of extruded polystyrene (XPS) foam present a promising solution for drone chassis construction. These materials offer a lighter weight and lower production cost compared to carbon fiber. This research aims to evaluate the strength and durability of fiberglass-reinforced sandwich composites with an XPS core through tensile testing (ASTM D638 Type I) and bending testing (ASTM C393). The goal is to determine whether this material is suitable for producing strong, lightweight, and efficient drone frames. Based on the analysis and calculations of the tensile test data, it was concluded that the highest tensile strength of the epoxy matrix sandwich composite reinforced with E-glass WR 200 and XPS core was achieved at a 40% fiber volume fraction, with an average strength of 131 MPa. A continuous increase in tensile strength was observed across 20%, 30%, and 40% fiber volume fractions. Similarly, the highest bending strength was recorded at the 40% fiber volume fraction, reaching 47.80 MPa with an average maximum load of 585 N. The average bending strength increased from 31.09 MPa (20%), to 36.4 MPa (30%), and finally to 47.80 MPa (40%). The tensile and bending test results demonstrate that the amount of E-glass fiber in the epoxy matrix significantly influences both tensile and bending strength. This is attributed to the uniform stress distribution along the reinforcement fibers, allowing higher fiber volumes to bear greater loads. However, increasing the fiber volume also results in higher stiffness, as shown by the brittle and separated fracture behavior observed in the 40% fiber volume specimen during bending tests, compared to the 20% and 30% fiber volume specimens. Keywords : composite sandwich, fiberglass, extruded polystyrene, ASTM D638, ASTM C393

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	composite sandwich, fiberglass, extruded polystyrene, ASTM D638, ASTM C393
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ227-240 Machine design and drawing T Technology > TJ Mechanical engineering and machinery > TJ241-254.7 Machine construction (General) > TJ241.I59 Machine design--Congresses. Production engineering--Congresses
Divisions:	03-Faculty of Engineering > 21201-Mechanical Engineering (S1)
Depositing User:	Tegar Arya Nusantara
Date Deposited:	02 Jun 2025 06:38
Last Modified:	02 Jun 2025 06:38
URI:	http://repository.unsri.ac.id/id/eprint/174579

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