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All Journal Traksi : Majalah Ilmiah Teknik Mesin Rotasi JURNAL TEKNIK MESIN Prosiding SNATIF Media Mesin: Majalah Teknik Mesin Jurnal Rekayasa Mesin Jurnal Metalurgi dan Material Indonesia Jurnal Material Teknologi Proses: Warta Kemajuan Bidang Material Teknik Teknologi Proses
Dwi Basuki Wibowo
Departemen Teknik Mesin, Fakultas Teknik, Universitas Diponegoro, Jl. Prof. Soedarto, SH, Tembalang, Semarang, Jawa Tengah, 50275
Automotive Engineering Chemistry Education Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Journal : Rotasi

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KEGAGALAN FUNGSI PENGEREMAN BIS DAN TRUK AKIBAT RUSAKNYA KOMPONEN RAKITAN KAMPAS REM Wibowo, Dwi Basuki; Haryanto, Ismoyo
ROTASI Vol 17, No 1 (2015): VOLUME 17, NOMOR 1, JANUARI 2015
Publisher : Departemen Teknik Mesin, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (904.269 KB) | DOI: 10.14710/rotasi.17.1.19-28

Abstract

Federal Motor Vehicle Safety Standard (FMVSS) mengklasifikasikan kendaraan bis dan truk (trailer dan container) sebagai heavy duty vehicle dimana rem, kopling, dan ban adalah komponen-komponen yang harus diperiksa secara rutin karena berkaitan dengan keamanan dan umur pemakaiannya yang relatif pendek. Sebagai komponen utama material gesek kampas rem memang harus bagus dan harus lolos serangkaian test sebagaimana diatur dalam berbagai standard yaitu SNI 09-0143-1987, ASTM G0115-04, ASTM D3359-02. Tetapi menurut The American Public Transportation Association (APTA BTS-SS-RP-003-07), kinerja sistim pengereman bis dan truk tidak semata-mata ditentukan oleh kualitas material kampas rem saja tetapi juga oleh kondisi brake shoe dan prosedur pemasangan (rebuild) kampas pada brake shoe. Dari hasil survey banyak pengusaha transportasi bis di Indonesia yang mengabaikan prosedur rebuild kampas rem yang telah distandarkan oleh APTA BTS-SS-RP-003-07 tersebut. Akibatnya kampas rem cepat aus, rem terkunci, dan yang paling parah adalah rem blong (rem tidak berfungsi). Fokus utama penelitian ini adalah mengkaji kemungkinan kerusakan brake shoe assembly (komponen rakitan kampas rem) saat pengereman yang berpotensi menyebabkan terjadinya kegagalan fungsi pengereman pada bis/truk.
The relationship between heel pad compressibility index, age, body mass index and foot area contact in calcanea spur patients Wibowo, Dwi Basuki; Suprihanto, Agus; Haryadi, Gunawan Dwi
ROTASI Vol 22, No 3 (2020): VOLUME 22, NOMOR 3, JULI 2020
Publisher : Departemen Teknik Mesin, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/rotasi.22.3.188-193

Abstract

This study was performed to investigate the relationship between heel pad compressibility index (HPCI), age, body mass index (BMI) and (FAC) for calcanea/heel spur patients. Thirteen patients with a symptomatic heel spur (3 males and 10 females) participated in this study. The HPCI increased with age and HPCI of the elderly is greater than the adult. The HPCI increased with pain minimum compressive pressure (PMCP) indicated HPCI are all significantly greater in patients with plantar heel pain than in normal subjects. The BMI increased with FAC is caused by BMI and FAC of males is greater than females. The PMCP decreased with BMI indicated that patient with excessive body mass will make experience more pain. The result of pain measurement showed that there are 7 patients who indicated the abnormality (the PMCP value is lower than 2 kg/cm2). From this study, it can be concluded that the quantitatively pain level is worst when PMCP< 2.0 kg/cm2, it is severe when 3.0> PMCP ≥ 2.0 kg/cm2 and it is moderate when PMCP≥3.0 kg/cm2
Development of Footprint Analysis Software Using the Cavanagh Arch Index Method Based on a MATLAB GUI Umardani, Yusuf; Wibowo, Dwi Basuki; Suprihanto, Agus; Basyith, Mohammad Rizqi Abdul
ROTASI Vol 26, No 4 (2024): VOLUME 26, NOMOR 4, OKTOBER 2024
Publisher : Departemen Teknik Mesin, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/rotasi.26.4.13-26

Abstract

The human foot plays a crucial role in supporting body weight and maintaining mobility. It is divided into three main sections: the heel, the arch (middle section), and the forefoot. Based on arch structure, feet are categorized into three types: normal, flat foot, and high arch. Flat feet can negatively affect foot health, making the identification of foot types critical for preventive care. In Indonesia, identification often relies on the wet foot test, which has limitations in accuracy. Therefore, a more effective identification system is needed. Previous studies developed software to identify foot types through digital images, but these lacked advanced features and image quality options. This research aims to develop new software that can operate a scanner, process images directly, and offer flexible editing options for improved image quality. The software was developed using MATLAB r2021B GUI, employing image acquisition and processing toolboxes. The results demonstrate high accuracy, with processing differences of 0.73% for length, 1.22% for width, 1.06% for shoe size, 1.34% for FAC, and 2.49% for the arch index compared to previous software versions.
Co-Authors - Samuel Abdul Ghani K Adibawa, Adham Adhwa Agus Suprihanto Andrean Rizky Agung Maulana Azhar Azzyumardi Pasha Bambang Singgih Hardjono Basyith, Mohammad Rizqi Abdul D Purwanto Daniel Sijabat Didi Sugiarto Djoeli Satrijo Djoeli Satrijo Eflita Yohana Eko Saputra Farhani, Ilham Fakhri Gunawan Dwi Haryadi IGN Wiratmaja Puja Ismoyo Haryanto Khoiri Rozi Khoiri Rozi Muhammad Ali Sholihun Muhammad Fakhri Aji Pratomo Nobeth Bastanta Ginting Nofa Karsa Mustadzanah Ojo Kurdi Pratomo, Muhammad Fakhri Aji Rizal Abdul Herlan Ryan Patra Wirabuana Saputra, Anggar Aji Simson Hasudungan Hutagalung Sindu Sutomo Sumar Hadi Suryo Sutopo Setiawan Tomy Satya Venesa Bagus Anandya Yusuf Umardani Yusuf Umardhani