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Pengembangan Metode Rekonstruksi Jalan Berbasis Data Global Positioning System dan Giroskop Nurprasetio, Ignatius Pulung; Budiman, Bentang Arief; Noersalim, Kelvin; Naufal, Rifqi Syuja
Mesin Vol 26, No 1 (2017)
Publisher : Mesin

Penelitian ini bertujuan untuk mengembangkan metode rekonstruksi jalan yang efektif dan berbiaya murah. Jalan kendaraan bermotor yang direkonstruksi adalah Jalan E ITB yang memiliki karakteristik tanjakan, belokan, dan kemiringan. Dua parameter penting yaitu posisi dan kemiringan jalan diukur bersamaan menggunakan sensor Global Positioning System (GPS) dan sensor giroskop, yang dipasang pada mikrokontroler komersial Arduino. Perangkat tersebut ditempelkan pada trolley yang berperan sebagai kendaraan. Saat trolley didorong, sensor GPS dan giroskop mencatat posisi dan kemiringan dari trolley pada interval waktu tertentu. Data dari kedua sensor tersebut kemudian diolah sehingga menghasilkan posisi dalam ruang 3 dimensi dan sudut kemiringan jalan. Data pengukuran posisi dan sudut kemiringan dari perangkat yang dibuat juga dibandingkan dengan data yang diperoleh dari gawai Android komersial yang mempunyai sensor GPS dan giroskop. Hasil perbandingan menunjukan bahwa gawai Android dapat mengukur posisi dan sudut kemiringan lebih baik daripada perangkat yang dikembangkan. Lebih lanjut, dengan menggunakan data posisi dan sudut kemiringan yang telah diukur, rekonstruksi jalan E ITB secara digital menggunakan perangkat lunak komerisal CarSim telah sukses dilakukan. Data digital rekonstruksi jalan tersebut dapat digunakan untuk mensimulasikan kondisi kecelakaan, menentukan perilaku berkendara, hingga memetakan kerusakan/ketidaksesuaian jalan yang dapat berbahaya bagi pengendara.

Perancangan Dan Pembuatan Prototype Alat Pengering Cacahan Plastik Daur Ulang Nurprasetio, Ignatius Pulung; Rahardian, Samuel; Budiman, Bentang Arief; Prawisudha, Pandji
Mesin Vol 26, No 2 (2017)
Publisher : Mesin

Makalah ini menjelaskan proses perancangan dan pembuatan prototipe alat pengering cacahan plastik sederhana. Cacahan plastik basah diperoleh dari hasil proses pencacahan sampah plastik yang telah dicuci dengan air untuk menghilangkan kotoran yang menempel. Proses pengeringan dilakukan untuk menghilangkan kandungan air pada cacahan plastik tersebut. Alat pengering yang dirancang menggunakan mekanisme fluidized bed yaitu cacahan plastik dihembuskan udara panas dalam keadaan terapung. Perhitungan teoritik untuk memprediksi waktu pengeringan cacahan plastik yang dibutuhkan dengan model perpindahan panas juga dilakukan. Selanjutnya, berbagai pengujian dilakukan untuk menilai kinerja alat pengering tersebut. Hasil pengujian membuktikan bahwa alat tersebut mampu mengeringkan cacahan plastik dengan waktu relatif singkat dengan kualitas hasil pengeringan yang baik.

Prediction of the remaining service lifetime of inflatable rubber dam with deep hole damage Budiman, Bentang Arief; Sambegoro, Poetro Lebdo; Rahardian, Samuel; Ilhamsyah, Rizky; Firmansyah, Ridha; Juangsa, Firman Bagja; Aziz, Muhammad
Indonesian Journal of Science and Technology Vol 5, No 3 (2020): IJOST: VOLUME 5, ISSUE 3, 2020
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ijost.v5i3.24936

This paper exhibits a method to predict the remaining service lifetime of inflatable rubber dam by considering the appearance of deep hole damage. The material used for the rubber dam is a composite comprising three layers of woven fabric as fiber and EPDM/SBR 64 474 rubber as a matrix. The service lifetime is predicted by calculating the degradation of rubber damâ€™s material properties. Simple Rate Law model and Time-Temperature Superposition model are employed to calculate the rubber properties degradation. A finite element analysis is then conducted to investigate stress and strain distributions which occur in the rubber dam membrane during operational loading. Furthermore, the effect of deep hole damage in the rubber dam, which is caused by improper maintenance, is modeled as well. The results show that a 7 mm depth of the hole can accelerate rubber degradation, which causes catastrophic failure. This can happen because two layers of the woven fabric in the rubber dam have been broken. Suggestion to hold up the degradation is also discussed.

Formation control of non-identical multi-agent systems Djati Wibowo Djamari; Muhamad Rausyan Fikri; Bentang Arief Budiman; Farid Triawan
International Journal of Electrical and Computer Engineering (IJECE) Vol 12, No 3: June 2022
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijece.v12i3.pp2721-2732

The problem considered in this work is formation control for non-identical linear multi-agent systems (MASs) under a time-varying communication network. The size of the formation is scalable via a scaling factor determined by a leader agent. Past works on scalable formation are limited to identical agents under a fixed communication network. In addition, the formation scaling variable is updated under a leader-follower network. Differently, this work considers a leaderless undirected network in addition to a leader-follower network to update the formation scaling variable. The control law to achieve scalable formation is based on the internal model principle and consensus algorithm. A biased reference output, updated in a distributed manner, is introduced such that each agent tracks a different reference output. Numerical examples show the effectiveness of the proposed method.

Development Of Appropriate Technology Adoption For Coffee Farmers In Sukawangi Village, Sumedang Bentang Arief Budiman; Hari Purnama; Husna Nugrahapraja; Muhammad Abdur Rasyid; Natas Setiabudhi Daryono Putra; Sri Aswin Suryani; Annisa Ratna Nurillah; Ima Mulyama Zainuddin; Rindia Maharani Putri; Wervyan Shalannanda; Raden Aswin Rahadi
Jurnal Ilmu Sosial Politik dan Humaniora (Jisora) Vol 2 No 2 (2019): Jurnal Ilmu Sosial Politik dan Humaniora
Publisher : Fakultas Ilmu Sosial dan Ilmu Politik Universitas Garut

In this paper, the authors propose solutions to increase the added value of coffee in the form of the process of making the process of making coffee using appropriate technology adoption. This paper uses qualitative methods of locational survey and literature study. Survey activities are conducted in the form of interviews and observations. The team conducted interviews with coffee farming communities in the area and observed the conditions of coffee farming. The literature study was conducted by synthesizing literature reviews and continued by formulating the theory and principles of appropriate technology in the context of local agriculture in Sukawangi Village, Sumedang Regency, West Java. In this paper, the authors describe the solution proposals related to the problems of coffee farmers in Sukawangi, Sumedang. Two suggestions for increasing the value added of coffee beans are by using appropriate technology adoption. With both of these solutions, it is expected that the quality of coffee plantation in Sumedang can be increased and can be marketed in both domestic and international markets. As a result, the welfare of farmers in Sumedang will increase.

The Effects of Rice Husk Particles Size as A Reinforcement Component on Resin-Based Brake Pad Performance: From Literature Review on the Use of Agricultural Waste as A Reinforcement Material, Chemical Polymerization Reaction of Epoxy Resin, to Experiments Asep Bayu Dani Nandiyanto; Siti Nur Hofifah; Gabriela Chelvina Santiuly Girsang; Silmi Ridwan Putri; Bentang Arief Budiman; Farid Triawan; Abdulkareem Sh. Mahdi Al-Obaidi
Automotive Experiences Vol 4 No 2 (2021)
Publisher : Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)

This study aims to investigate the effect of rice husks’ particle size on resin-based brake pad performance (i.e. compressive strength, puncture strength, mass loss, wear rate, friction coefficient, and heat resistance). Bisphenol A-epichlorohydrin and cycloaliphatic amine were mixed to form resin and used as the brake pad's base material. In the experiment, rice husk with a specific particle size (i.e., 250, 500, dan 1000 μm) was added to the resin. Rice husk has received considerable interest due to its lignin, cellulose, and silica content, making it suitable as friction material due to its ceramic-like behavior. The experimental results showed small rice husk particles improved compressive strength, puncture strength, and bulk density. This can be obtained from the analysis of the maximum compressive strength for brake pad supported by particles with sizes of 250, 500, and 1000 μm having values of 0.238; 0.173; and 0.144 MPa, respectively. In contrast, large particles formed coarse surfaces and pores, decreased mass loss rate, and improve friction properties (i.e. wear rate, friction coefficient). The friction coefficient values of brake pad supported by particles with sizes of 250, 500, and 1000 µm were, respectively, 0.2075; 0.2070; and 0.3379. Particle size affected interpacking, interfacial bonding, pores number and size, thermal softening, mechanical properties, and friction properties of the brake pad. Comparison between the prepared resin-based and commercial brake pad was also done, confirming the utilization of agro-waste as a potential alternative for friction material in the brake pad.

Rollover Stability Analysis and Layout Optimization of a Delta E-trike Fitri Endrasari; Djati Wibowo Djamari; Bentang Arief Budiman; Farid Triawan
Automotive Experiences Vol 5 No 2 (2022)
Publisher : Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)

This study derives a rollover index for a delta E-trike. Past works derive the rollover index by considering lateral centrifugal force only. In contrast, this study proposes a rollover index which is derived under the assumption that the centrifugal force act in both lateral and longitudinal direction. This assumption will give a result closer to the real-life application. In addition, a parametric study on the effect of center of gravity location on rollover index is also proposed. The study continued with the layout assessment, which is done as the considerations in rearranging the powertrain components inside the E-trike. The comparison between initial and new layout shows that the new arrangement gives several advantages to the delta E-trike.

Pengembangan Metode Rekonstruksi Jalan Berbasis Data Global Positioning System dan Giroskop Ignatius Pulung Nurprasetio; Bentang Arief Budiman; Kelvin Noersalim; Rifqi Syuja Naufal
Mesin Vol. 26 No. 1 (2017)
Publisher : Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/MESIN.2017.26.1.3

Penelitian ini bertujuan untuk mengembangkan metode rekonstruksi jalan yang efektif dan berbiaya murah. Jalan kendaraan bermotor yang direkonstruksi adalah Jalan E ITB yang memiliki karakteristik tanjakan, belokan, dan kemiringan. Dua parameter penting yaitu posisi dan kemiringan jalan diukur bersamaan menggunakan sensor Global Positioning System (GPS) dan sensor giroskop, yang dipasang pada mikrokontroler komersial Arduino. Perangkat tersebut ditempelkan pada trolley yang berperan sebagai kendaraan. Saat trolley didorong, sensor GPS dan giroskop mencatat posisi dan kemiringan dari trolley pada interval waktu tertentu. Data dari kedua sensor tersebut kemudian diolah sehingga menghasilkan posisi dalam ruang 3 dimensi dan sudut kemiringan jalan. Data pengukuran posisi dan sudut kemiringan dari perangkat yang dibuat juga dibandingkan dengan data yang diperoleh dari gawai Android komersial yang mempunyai sensor GPS dan giroskop. Hasil perbandingan menunjukan bahwa gawai Android dapat mengukur posisi dan sudut kemiringan lebih baik daripada perangkat yang dikembangkan. Lebih lanjut, dengan menggunakan data posisi dan sudut kemiringan yang telah diukur, rekonstruksi jalan E ITB secara digital menggunakan perangkat lunak komerisal CarSim telah sukses dilakukan. Data digital rekonstruksi jalan tersebut dapat digunakan untuk mensimulasikan kondisi kecelakaan, menentukan perilaku berkendara, hingga memetakan kerusakan/ketidaksesuaian jalan yang dapat berbahaya bagi pengendara.

Perancangan Dan Pembuatan Prototype Alat Pengering Cacahan Plastik Daur Ulang Ignatius Pulung Nurprasetio; Samuel Rahardian; Bentang Arief Budiman; Pandji Prawisudha
Mesin Vol. 26 No. 2 (2017)
Publisher : Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/MESIN.2017.26.2.2

Makalah ini menjelaskan proses perancangan dan pembuatan prototipe alat pengering cacahan plastik sederhana. Cacahan plastik basah diperoleh dari hasil proses pencacahan sampah plastik yang telah dicuci dengan air untuk menghilangkan kotoran yang menempel. Proses pengeringan dilakukan untuk menghilangkan kandungan air pada cacahan plastik tersebut. Alat pengering yang dirancang menggunakan mekanisme fluidized bed yaitu cacahan plastik dihembuskan udara panas dalam keadaan terapung. Perhitungan teoritik untuk memprediksi waktu pengeringan cacahan plastik yang dibutuhkan dengan model perpindahan panas juga dilakukan. Selanjutnya, berbagai pengujian dilakukan untuk menilai kinerja alat pengering tersebut. Hasil pengujian membuktikan bahwa alat tersebut mampu mengeringkan cacahan plastik dengan waktu relatif singkat dengan kualitas hasil pengeringan yang baik.

On the Use of Steel and Aluminum Materials for Frame Structure of Electric Trike Samuel Rahardian; Ilyasa Dwi Putra; Bentang Arief Budiman
Indonesian Journal of Computing, Engineering, and Design (IJoCED) Vol. 3 No. 1 (2021): IJoCED
Publisher : Faculty of Engineering and Technology, Sampoerna University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35806/ijoced.v3i1.122

This work investigated the pros and cons of aluminum material used for electric trike frame compared with steel material. With a compact design and small dimension, e-trike is suitable to be used in many relatively small road accesses. However, the compact design can cause the frame to receive high and concentrated stress. The aluminum-based frame had lower strength, but lighter weight compared to the steel-based frame. In this study, the stress evaluation for both aluminum-based and steel-based frames is done using the finite element method. The minimum thickness of the aluminum-based frame was iterated to match the strength of the steel-based frame. The results showed that the aluminum-based frame has comparable performance to the steel-based frame but with lighter weight. However, the production cost of the aluminum-based frame might be a challenging issue to be solved.

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