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Journal : Jurnal Elemen

PENGARUH KEKUATAN IMPAK POLIESTER BERPENGUAT SERAT BAMBU HAUR DAN FIBERGLASS PADA APLIKASI BUMPER MOBIL Raliannoor Raliannoor; A'yan Sabitah
ELEMEN : JURNAL TEKNIK MESIN Vol 7 No 1 (2020)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (486.458 KB) | DOI: 10.34128/je.v7i1.115

Abstract

Abstract. The process of developing composite materials is greatly increasing, the need for quality composite materials and the development of composite manufacturing technology are increasingly dominating in the machinery industry. The aim of this research is to develop a composite material with bamboo fiber reinforcement and glass fiber as an alternative to automotive raw materials to replace plastic. Preparation of composite specimens with each reinforcement with a volume fraction of 2%, 2.5%, and 3%. The polymer material used is Yukalac BQTN 157-EX polyester as the matrix. With haur bamboo fiber and fiberglass as reinforcement. Making specimens using the hand lay up method. The test carried out is the impact test of composite specimens. The Impact Test is carried out using the ASTM D 5896 standard. Based on the test results, it can be concluded that the effect of fiber volume fraction on the characteristics of composite samples for impact test. Composite strengthened with bamboo haur and fiberglass powder at 2.5% weight volume fraction has the most ideal characteristic, which has an average impact strength of 0.8412 J/mm2. , and with an average impact strength of 0.3180 J/mm2 at a weight volume fraction of 2.5%. Equivalent to automotive raw materials, namely to develop polyoxymethylene alternative plastic materials.
PENINGKATAN HASIL HIDROGEN PADA PROSES GASIFIKASI TANDAN SAWIT A'yan Sabitah; Moh. Sulhan; Raliannoor Raliannoor
ELEMEN : JURNAL TEKNIK MESIN Vol 7 No 1 (2020)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (472.333 KB) | DOI: 10.34128/je.v7i1.116

Abstract

Abstrak. Katalis bentonit merupakan katalis yang mampu menyerap kadar air dan memiliki sifat penghantar panas yang baik, pada proses gasifikasi katalis bentonit sangat berperan aktif dalam penyebaran panas ke biomassa. Penelitian ini dilakukan menggunakan tandan kosong kelapa sawit dengan tambahan katalis bentonit 10% dari berat total biomassa, selain itu penelitian ini juga mengamati pengaruh temperatur proses gasifikasi, dimana temperatur yang digunakan adalah 500 oC, 600 oC dan 700 oC. Dari hasil penelitian diperoleh volume gas mengalami peningkatan seiring dengan tingginya temperatur proses gasifikasi dan kadar hidrogen H2 dalam syngas mengalami peningkatan namun kadar CH4 mengalami penurunan. Selain produk gas disini juga mengamati hasil akhir berupa char dan tar, dimana hasil tar mengalami penurunan seiring dengan bertambahnya temperatur sedangkan untuk char tidak terlalu mengalami perubahan signifikan pada proses gasifikasi.