Abstract
Mahogany bark is one of natural material which not used optimally in society. The overabundance of mahogany bark appearing new problem of garbage which charges an alternative solution creatively and innovatively becomes a new efficient and effective product. An alternative solution of mahogany bark utilization is as organic composite material of disk brake. The making of organic composite material of brake disk firstly is reducing the mahogany bark becomes a homogeneous carbon powder. The mahogany bark was smoked being of carbon and mixed with coconut shell and resin polyester as an adhesive. The organic composite material was produced, tested by Brinell Hardness test and attrition test by varied of composition percentage. There are five kinds of composite material composition had been tested. The result is obtainable of the most precise composition percentage 60% mahogany bark carbon, 15% coconut shell carbon, and 25% resin polyester which has brinell hardness number and attrition massa identically with Standar Nasional Indonesia (SNI).
 Keywords: mahogany bark, composite material, disk brake, Brinell hardness test, attrition test
Highlights
Sampah menjadi salah satu permasalahan bagi kota-kota urban di Indonesia yang belum terselesaikan dengan baik hingga kini
An alternative solution of mahogany bark utilization is as organic composite material of disk brake
The mahogany bark was smoked being of carbon and mixed with coconut shell and resin polyester as an adhesive
Summary
Kulit buah mahoni menjadi salah satu bahan yang belum termanfaatkan secara optimal dalam masyarakat. Jumlah kulit buah mahoni yang melimpah akan menimbulkan permasalahan baru berupa sampah. Tingginya jumlah kulit buah mahoni di lingkungan masyarakat menuntut cara penanganan alternatif yang kreatif dan inovatif menjadi produk berdaya guna. Sebuah upaya yang dilakukan adalah pemanfaatan kulit buah mahoni sebagai bahan komposit organik untuk kampas rem. Kampas rem yang dihasilkan diuji kekerasan dan ketahanan aus dengan memvariasikan persentase komposisi serbuk arang kulit buah mahoni terhadap bahan penyusun lain. Hasilnya diperoleh persentase komposisi paling tepat yaitu 60% arang kulit mahoni, 15% arang tempurung kelapa, dan 25% resin polyester yang memiliki nilai kekerasan dan massa keausan mendekati nilai Standar Nasional Indonesia (SNI). Kata-kata kunci: kulit buah mahoni, bahan komposit, kampas rem, uji kekerasan, uji gesek
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