Widya, Farras (2021) Pengaruh Grain size Material Terhadap Koefisien Gesek dan Kekerasan Permukaan Pada Material Komposit Cocopeat dan Magnesium Oksida. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Sampai sekarang, banyak sekali limbah dari serbuk sabut kelapa dan pengolahannya hanya dengan secara tradisional. Dari penelitian sebelumnya tentang serbuk serabut kelapa disimpulkan bahwa serbuk tempurung kelapa mempunyai tingkat kekerasan (50-80 kgf.mm-2 ) dan keausan (5.10-4 – 5.10-3 mm2 /kg) yang mendekati nilai standar dari kampas rem, Namun saat ini, belum ada penelitian yang mengkaji tentang pengaruh dari grain size material dari komposit serbuk sabut kelapa tersebut..
Penelitian ini bertujuan untuk mengetahui bagaimana pengaruh dari grain size terhadap koefisen gesek dan kekerasan permukaan komposit cocopeat dan magnesium oksida yang nantinya dapat digunakan sebagai salah satu alternatif material pengganti untuk material kampas rem non-asbestos. Pengujian dilakukan dengan menggunakan pasco capstone dengan variasi ukuran grain size material komposit. Pengujian dilakukan masing-masing 3 kali untuk setiap variasi ukuran grain size dengan pembebanan 1 kg. Proses selanjutnya yaitu mengamati dan menganalisa struktur permukaan kontak.
Setelah dilakukan pengujian dan analisa hasil, dapat diketahui bahwa pengaruh ukuran bulir dari serbuk serabut kelapa dapat memengaruhi dari hasil kekerasan permukaan dan koefisien gesek dari komposit kampas rem serbuk serabut kelapa dan magnesium oksida (MgO). Dari hasil analisa, diperoleh nilai 75,4 HD, yaitu variasi dengan menggunakan mesh 200 dan hasil kekerasan kampas rem komparator mempunyai nilai kekerasan sebesar 94,4667 HD. Nilai koefisien gesek kinetis terbesar didapatkan pada komposit spesimen uji dengan variasi tanpa menggunakan mesh dengan nilai koefisien gesek kinetis sebesar 0,33278 μm sedangkan koefisien gesek kinetis kampas rem komparator adalah 0.3824 μm.
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Until now, there is a lot of waste from coco fiber and its processing is only done in a traditional way. From previous research on coconut fiber powder, it was concluded that coconut shell powder has a hardness level (50-80 kgf.mm-2) and wear (5.10-4 – 5.10-3 mm2 /kg) which is close to the standard value of the canvas. brake, However, at this time, there has been no research that examines the effect of the grain size material of the coconut coir powder composite.
This study aims to determine how the effect of grain size on the coefficient of friction and surface hardness of cocopeat and magnesium oxide composites which can later be used as an alternative material for non-asbestos brake pads materials. The test was carried out using pasco capstone with variations in the grain size of the composite material. The test was carried out 3 times each for each variation in grain size with a loading of 1 kg. The next process is to observe and analyze the structure of the contact surface.
After testing and analyzing the results, it can be seen that the effect of the grain size of coconut fiber powder can affect the surface hardness and friction coefficient of the composite of coconut fiber powder and magnesium oxide (MgO) brake pads. From the results of the analysis, obtained a value of 75.4 HD, which is a variation using a 200 mesh and the results of the comparator brake pads hardness have a hardness value of 94.4667 HD. The greatest value of the coefficient of kinetic friction is obtained in the composite test specimen with variations without using a mesh with a coefficient of kinetic friction of 0.33278 m while the coefficient of kinetic friction of the comparator brake pads is 0.3824 m
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | kekersaan permukaan, serbuk sabut kelapa, koefisien gesek, magnesium oksida,surface hardness, coconut fiber, coefficient of friction, magnesium oxide |
| Subjects: | T Technology > TL Motor vehicles. Aeronautics. Astronautics T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL440 Motorcycles. |
| Divisions: | Faculty of Industrial Technology > Mechanical Engineering > 21201-(S1) Undergraduate Thesis |
| Depositing User: | Muhammad Farras Widya Nurhisyam |
| Date Deposited: | 25 Aug 2021 13:29 |
| Last Modified: | 25 Aug 2021 13:29 |
| URI: | http://repository.its.ac.id/id/eprint/89552 |
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