Setiawan, Roni (2022) Analisa Pengaruh Selulosa Asetat Terhadap Coefficient Of Friction, Hardness, Thermal Stability Dan Wear Rate Pada Komposit Serbuk Kayu, Sekam Padi Dan Tempurung Kelapa Untuk Kampas Rem. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Perkembangan teknologi pada bidang otomotif sangat berkembang pesat. Performa kendaraan ditunjang dengan sistem pengereman sebagai unsur keamanan dalam berkendara. Pada penelitian sebelumnya tentang analisa laju keausan kampas rem yang terbuat dari komposit sekam padi dan tempurung kelapa, menunjukkan hasil nilai laju keausan yang rendah pada komposisi tertentu. Terdapat kelemahan pada kampas rem tersebut, yaitu ketahanan yang rendah pada temperatur tinggi, Selain itu, masih terdapat beberapa karakteristik dari kampas rem yang belum dilakukan pengujian, yaitu seperti nilai hardness dan nilai wear coefficient. Selulosa asetat merupakan serat buatan yang banyak digunakan karena memiliki ketahanan tinggi terhadap panas. Penelitian ini bertujuan untuk mengetahui pengaruh penambahan selulosa asetat terhadap nilai hardness, koefisien gesek, laju keausan dan stabilitas termal pada komposit kampas rem serbuk kayu, sekam padi dan serabut kelapa. Pengujian dilakukan dengan menggunakan alat durometer untuk pengujian hardness, PASCO untuk pengujian koefisien gesek, tribometer untuk pengujian keausan dan infrared thermometer untuk pengujian stabilitas termal. Presentase massa selulosa asetat yang ditambahkan pada spesimen A sebesar 5%, yaitu 1 gram dengan 7 gram resin epoxy, pada spesimen B sebesar 10%, yaitu 2 gram dengan 6 gram resin epoxy, dan pada spesimen C sebesar 20%, yaitu 4 gram dengan 4 gram resin epoxy. Massa bahan penyusun komposit kampas rem adalah 4 gram serbuk kayu, 4 gram sekam padi, 4 gram tempurung kelapa. Setelah pengujian dilakukan, nilai hardness tertinggi terdapat pada spesimen C dengan 20% selulosa asetat, yaitu 68.5 HS. Nilai hardness meningkat seiring dengan presentase penambahan masa selulosa asetat pada spesimen uji. Pada pengujian koefisien gesek, nilai koefisien gesek statis dan kinetis terbesar terdapat pada spesimen C dengan 20% selulosa asetat, yaitu 0.6635 dan 0.5564. Nilai koefisien gesek statis dan kinetis meningkat seiring dengan presentase penambahan masa selulosa asetat. Pada pengujian laju keausan, nilai wear rate dan wear coefficient terendah terdapat pada spesimen A dengan 5% selulosa asetat, yaitu 0.001026 mm3 /Nm dan 0.001314. Nilai wear rate dan wear coefficient meningkat seiring dengan penambahan presentase selulosa asetat. Untuk pengujian stabilitas termal, peningkatan temperatur terendah terdapat pada spesimen C dengan 20% selulosa asetat, yaitu 3.4 oC selama 57 menit pengujian keausan berlangsung. Stabilitas termal akan meningkat seiring dengan presentase penambahan selulosa asetat. Berdasarkan penelitian yang telah dilakukan, maka dapat disimpulkan bahwa penambahan selulosa asetat akan meningkatkan nilai hardness, nilai koefisien gesek, nilai wear rate dan stabilitas termal dari komposit kampas rem non-asbestos sekam padi, serbuk kayu dan serbuk tempurung kelapa.
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The development of technology in the automotive sector is growing rapidly. Vehicle performance is supported by a braking system as an element of safety in driving. In a previous study on the analysis of the wear rate of brake linings made from a composite of rice husks and coconut shells, the results showed that the wear rate values were low for certain compositions. There are weaknesses in the brake lining, namely low resistance at high temperatures. In addition, there are still some characteristics of the brake lining that have not been tested, such as hardness values and wear coefficient values. Cellulose acetate is an artificial fiber that is widely used because it has high resistance to heat. This study aims to determine the effect of the addition of cellulose acetate on the value of hardness, coefficient of friction, wear rate and thermal stability in the composite of wood powder brake lining, rice husk and coconut fiber. Tests were carried out using a durometer for hardness testing, PASCO for testing the coefficient of friction, a tribometer for testing for wear and an infrared thermometer for testing thermal stability. The mass percentage of cellulose acetate added to specimen A was 5%, i.e. 1 gram with 7 grams of epoxy resin, 10% for specimen B, 2 grams with 6 grams of epoxy resin, and 20% for specimen C, which was 4 grams with 4 grams of epoxy resin. The mass of the components of the brake lining composite is 4 grams of sawdust, 4 grams of rice husks, 4 grams of coconut shell. After the test was carried out, the highest hardness value was found in specimen C with 20% cellulose acetate, which was 68.5 HS. The hardness value increased along with the percentage addition of cellulose acetate mass to the test specimen. In the friction coefficient test, the largest static and kinetic friction coefficient values were found in specimen C with 20% cellulose acetate, namely 0.6635 and 0.5564. The value of the coefficient of static and kinetic friction increases with the percentage addition of cellulose acetate mass. In the wear rate test, the lowest wear rate and wear coefficient were found in specimen A with 5% cellulose acetate, namely 0.001026 mm3/Nm and 0.001314. The value of wear rate and wear coefficient increases with the addition of the percentage of cellulose acetate. For thermal stability testing, the lowest temperature increase was found in specimen C with 20% cellulose acetate, which was 3.4 oC for 57 minutes of wear testing. Thermal stability will increase along with the percentage addition of cellulose acetate. Based on the
research that has been done, it can be concluded that the addition of cellulose acetate will increase the hardness value, friction coefficient value, wear rate value and thermal stability of the non-asbestos brake pad composite of rice husk, wood powder and coconut shell.
| Item Type: | Thesis (Other) |
|---|---|
| Additional Information: | RSM 620.118 Set a-1 2022 |
| Uncontrolled Keywords: | selulosa asetat, koefisien gesek, hardness, laju keausan, stabilitas termal, cellulose acetate, coefficient of friction, hardness, wear rate, thermal stability |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) > TA418.9 Composite materials. Laminated materials. |
| Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Mechanical Engineering > 21201-(S1) Undergraduate Thesis |
| Depositing User: | Mr. Marsudiyana - |
| Date Deposited: | 13 Feb 2025 03:42 |
| Last Modified: | 13 Feb 2025 03:42 |
| URI: | http://repository.its.ac.id/id/eprint/118710 |
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