FABRICATION OF HYBRID COMPOSITES BASED ON GLASS FIBER – RAMIE / NATURAL RUBBER AS A BULLETPROOF PANEL IN PATROL BOAT MODULAR ARMOR SYSTEMS

• Main Author: Aulia Rachman, Onny
• Format: Theses
• Language: Indonesia
• Subjects: Teknik (Rekayasa, enjinering dan kegiatan berkaitan)
• Online Access: https://digilib.itb.ac.id/gdl/view/52112
• Institution: Institut Teknologi Bandung

Protection of patrol boats from bullet threats can be increased by adding bullet-proof panels to the ship's interior. These panels are generally made using glass fiber/epoxy composite. These bullet-proof panels' performance can be improved, particularly in term of energy absorption by selecting the reinforcement and matrix. In this study, a bullet-proof composite for patrol boat protection was made by optimizing the type of reinforcement and the matrix. Optimization of the reinforcement was carried out using two types of fiber: ramie and glass fiber. The purpose of using ramie is to achieve the same ballistic performance but using renewable source in Indonesia. Like other natural fibers, ramie's performance is largely determined by its composition, especially the cellulose. To increase the cellulose content in ramie, it was given alkaline treatment using 5% NaOH solution, and the fabric construction was tested to see the effect of alkalization on ramie fabric. Furthermore, the optimization of the matrix aims to increase the damping value. In order to get the best matrix performance, several parameters were varied. First, the type of natural rubber used, namely Standard Indonesian Rubber (SIR 10) and Ribbed Smoke Sheet (RSS1). Second, rubber vulcanization system, a conventional, semiefficient, and efficient system formed by varying the number of parts per hundred rubber (phr) of the accelerator. And third, the number of phr carbon black with 0, 10, 20, and 30 phr. These variations were tested for rheology using a rheometer and the mechanical properties such as tensile strength based on ASTM D412, tear strength based on ASTM D624, hardness based on ASTM D2240, and rebound resilience ISO 4662.