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All Journal Rotasi Quantum Teknika Prosiding Simposium Nasional Rekayasa Aplikasi Perancangan dan Industri
Dhewanto, Santo Ajie
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Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Karakterisasi Bahan Kampas Rem Sepeda Motor Dari Komposit Serbuk Kayu Jati Yudhanto, Ferriawan; Dhewanto, Santo Ajie; Yakti, Suluh Widya
Quantum Teknika : Jurnal Teknik Mesin Terapan Vol 1, No 1 (2019): October
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jqt.010104

Abstract

Commonly the prime material for brake pad of the commercial motorcycle using asbestos, these materials cause a disease like as cancer of respiration if the abrasive particles were sniffed. The SKJ (Serbuk Kayu Jati) brake pad is alternative to replacement the asbestos brake pads. The mechanical test includes a wear test, hardeness test, friction coefficient test, and heat resistant test. The hot press process for SKJ as main material of brake pad based by variation of temperature there are 160ºC, 170ºC, and 180ºC. The optimum test result of SKJ brake pads is a variation of 180ºC with wear test result is 3,36 x 10-7 mm2/kg, the hardeness result is 25,1 BHN, the friction coefficient test is 0,59 and not damaged on the heat resistant test with a temperature of 300ºC during an hour.
Analisis Sifat Mekanik dan Tribologi pada Cakram Baru dan Bekas Khafidh, Muhammad; Dhewanto, Santo Ajie; Kasim, Muhammad Alfaarisi Maulana; Purwaningrum, Yustiasih
ROTASI Vol 25, No 4 (2023): VOLUME 25, NOMOR 4, OKTOBER 2023
Publisher : Departemen Teknik Mesin, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/rotasi.25.4.14-22

Abstract

Proses pengereman pada kendaraan mempunyai dua komponen penting, yaitu piringan cakram dan kampas rem. Kontak antara cakram dan kampas rem diharapkan mempunyai gesekan yang cukup untuk mengurangi kecepatan kendaraan. Selain itu, keausan dari cakram dan kampas rem harus diminimalkan untuk memperpanjang umur komponen. Di Indonesia, banyak pemilik kendaraan yang memutuskan untuk mendaur ulang material cakram ketika cakram sudah aus. Dari sudut pandang lingkungan, hal ini akan mengurangi limbah dan jejak karbon dioksida. Namun, kinerja keselamatan dari cakram daur ulang tersebut belum banyak diteliti. Dalam penelitian ini akan dianalisis kinerja mekanik dan tribologi berbagai jenis bahan cakram, baik cakram baru maupun yang daur ulang. Bahannya ada empat, yaitu cakram baru (Ba), cakram bekas (Be), cakram bekas + sekrap (BeS), dan cakram bekas + sekrap + ampplas (BeS Amplas). Analisis yang dilakukan meliputi kekerasan, kekasaran, massa aus, koefisien gesek, dan temperatur. Hasil penelitian menunjukkan bahwa kekasaran permukaan material Be lebih rendah dibandingkan material Ba, sedangkan material BeS memiliki kekasaran kurang lebih 5 kali lebih tinggi dibandingkan material Ba. Kekasaran permukaan material BeS yang tinggi menghasilkan gesekan yang rendah dan keausan yang tinggi. Situasi ini tidak diinginkan untuk aplikasi rem karena mengurangi keselamatan dan masa pakai produk. Pemberian perlakuan amplas pada material BeS dapat meningkatkan kinerja tribologi dan menurunkan suhu kontak.
The Effect Of Printing Speed And Nozzle Temperature On Tensile Strength, Geometry, and Surface Roughness Of A Product Printed using ABS Filament Nurgesang, Faisal Arif; Dhewanto, Santo Ajie; Ridlwan, Muhammad; Paryanto, P
Prosiding Simposium Nasional Rekayasa Aplikasi Perancangan dan Industri 2022: Prosiding Simposium Nasional Rekayasa Aplikasi Perancangan dan Industri
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

3D printing is an additive manufacturing technology that can quickly create 3D models by softening thermoplastic filaments layer by layer. In making objects using 3D printing technology, there are several parameters that affect the strength of the printed objects, including the printing speed and nozzle temperature. This study aims to investigate effect of printing speed and nozzle temperature on tensile strength, geometry, and surface roughness of a product printed using ABS filament. The printing speeds were varied at 30, 40, and 50 mm/s while the nozzle temperature vaeried at 235, 245, and 255 oC. The tensile test was carried out on the printed specimens according to ASTM D-638-02a. The surface roughness and geometry tests were carried out on the printed specimen with dimensions of 30x30x40 mm. The surface roughness and geometry tests were performed on the vertical side in order to examine the layer and the change of height. The results concluded that the optimum printing speed and nozzle temperature based on the research conducted were 30 mm/s and 255 oC where the tensile strength as high as 33.52 MPa was obtained.
Co-Authors Faisal Arif Nurgesang Ferriawan Yudhanto, Ferriawan Kasim, Muhammad Alfaarisi Maulana Muhammad Khafidh Paryanto, P Ridlwan, Muhammad Yakti, Suluh Widya Yustiasih Purwaningrum