Analisis Kekuatan Lentur Bahan Komposit Laminat Jute dan E-Glass dengan Metode Optimasi Taguchi

Abstract

Bahan komposit telah mengalami perkembangan yang cukup pesat sebagai bahan barn alternatif pengganti bahan-bahan Jogam. Struktur Jaminat jute merupakan struktur utama dari suatu benda clan akan mengalami penurnnan kekuatan mekaniknya seiring dengan waktu pakainya. Dalam studi ini, bahan komposit Jaminat clari kain jute anyaman akan digunakan sebagai penguat struktur material. Tujuan penelitian ini ialah menclapatkan data hasil uji kekuatan lentur bahan komposit laminat jute clan e-glass, menghitung nilai rata-rata clan signal to noise (Si\1R) dari data hasil uj i, clan menclapatkan komposisi optimum terhaclap kekuatan Jentur terbaik clengan metode optimasi taguchi. Komposit laminat terbuat dari Japisan Jembaran jute (J) dan e-glass (G) anyaman yang tercliri dari 9 variasi, yaitu J90.2, J90.3, 190.4, J45.2, J45.3, J45.4, clan G90.2, G90.3, G90.4. Spesimen uji Jentur clibentuk berclasarkan stanclar uji ASTM 0 790. Pengujian Jentur menggunakan alat uji Universal Testing 1\1achine (UTM) kapasitas 40 kN. Hasil studi memperlihatkan bahwa pemberian Japisan Jaminat jute clan e-glass menyebabkan peningkatan kekuatan Jentur spesimen hingga 77%. Dengan demikian, pemberian bahan komposit laminat clari bahan jute clan e-glass berpotensi untuk dikembangkan lebih lanjut untuk menghasilkan sifat mekanik yang lebih baik lagi. Composite materials have experienced quite rapid development as new alternative materials to replace metal materials. The structure of the jute laminate is the main structure of an object and will experience a decrease in its mechanical strength over time. In this study, laminated composite materials from woven jute fabrics will be used as reinforcement for the material structure. The purpose of this study was to obtain data on the flexural strength test results for laminated jute and e-glass composite materials, calculate the average value and signal to noise (SNR) from the test results, and obtain the optimum composition for the best flexural strength using the taguchi optimization method. Composite laminate is made of layers of woven jute (J) and e-glass (0) sheets consisting of9 variations, namely J90.2, J90.3, J90.4, J45.2, J45.3, J45.4, and 090.2, 090.3, 090.4. The flexural test specimens are formed according to ASTli1 D190 test standard. Flexure testing used a Universal Testing Machine (UT1\!f) with a capacity of 40 kN. The results of the study show that the application of lay ers of laminated jute and e-glass causes an increase in the flexural strength of the specimen up to 77%. Thus, the provision of laminated composite materials from jute and e-glass has the potential to be further developed to produce even better mechanical properties.