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Distribusi Panas Pengereman pada Sistem Rem Tromol Amri, Faisal; Afnison, Wanda; Sugiarto, Toto; Wagino, Wagino
AEEJ : Journal of Automotive Engineering and Vocational Education Vol 4 No 2 (2023): AEEJ : Journal of Automotive Engineering and Vocational Education
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/aeej.v4i2.213

Abstract

This study discusses the distribution of heat in the drum brake system using the experimental method using drums as the braking medium. The test was carried out using the brake test prototype process with the application of press and release. The test data collection technique is using three methods, namely by applying the same amount of press and release of the brake (20 seconds of pressure and 20 seconds of release), the application of press and release of the brake is released more than pressed (30 seconds is released and 10 seconds is pressed), and the application of press and release is more pressed than released (20 seconds pressed and 10 seconds released). The results showed that the highest temperature obtained in the application of brakes for 20 seconds and release for 20 seconds on standard drum brakes reached 61.8 º C, while applying the brakes for 10 seconds and releasing them for 30 seconds reached 46.3 º C, and applying the brakes for 20 seconds and releasing them for 10 seconds achieved a temperature increase of 73.5 º C. Penelitian ini berdiskusi tentang distribusi panas pada sistem rem tromol dengan metode eksperimen menggunakan tromol sebagai media pengereman. Adapun teknik pengambilan data pengujian yaitu dengan tiga metode, yaitu dengan pengaplikasian tekan dan lepas rem sama banyak (20 detik tekan dan 20 detik lepas), pengaplikasian tekan dan lepas rem lebih banyak dilepas dari pada ditekan (30 detik dilepas dan 10 detik ditekan), dan pengaplikasian tekan dan lepas rem lebih banyak ditekan dari pada dilepas (20 detik ditekan dan 10 detik dilepas). Hasil penelitian menunjukkan suhu tertinggi yang didapatkan pada pengaplikasian rem selama 20 detik dan lepas selama 20 detik pada rem tromol standard mencapai 61,8oC, sementara pengaplikasian rem 10 detik dan lepas selama 30 detik mencapapi 46,3oC, dan pengaplikasian rem 20 detik dan lepas selama 10 detik mencapai kenaikan suhu 73,5oC.
Pembuatan dan Penyediaan Alat Pengiris Bawang Merah untuk Pengusaha Skala Mikro di Kenagarian Talang Babungo, Kabupaten Solok, Sumatra Barat Fauza, Anna Niska; Afnison, Wanda; Putra, Randi Purnama; Purwantono, Purwantono; Kurniawan, Andre; Nurdin, Hendri
JPP IPTEK (Jurnal Pengabdian dan Penerapan IPTEK) Vol 7, No 1 (2023)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jpp-iptek.2023.v7i1.3773

Abstract

Bawang merah merupakan salah satu komoditas pertanian yang banyak dihasilkan di Indonesia. Salah satu daerah dengan hasil panen bawang merah yang cukup tinggi adalah Kenagarian Talang Babungo, Kabupaten Solok, Sumatra Barat. Saat ini, sudah mulai berkembang pengusaha-pengusaha berskala mikro dalam memproduksi makanan olahan bawang merah, yaitu bawang merah goreng. Hal ini telah menjadi salah satu sumber mata pencarian masyarakat di daerah tersebut. Bawang merah goreng menunjukkan potensi yang besar sebagai produk olahan pertanian dengan nilai jual yang tinggi. Selain itu, bawang merah goreng sangat populer di kalangan masyarakat karena keefektifan dan kekhasan cita rasanya. Namun, proses pembuatan bawang merah goreng di Kenagarian Talang Babungo masih dilakukan secara manual dan menggunakan alat sederhana. Sehingga, hal ini mengakibatkan rendahnya produktivitas kerja dan produk yang dihasilkan. Oleh karena itu, Teknik Mesin Universitas Negeri Padang memberikan solusi kepada pengusaha bawang merah dalam kegiatan Pengabdian Kepada Masyarakat. Tim Pengabdian merancang dan menyediakan mesin pengiris bawang merah melalui penggunaan teknologi tepat guna. Mesin pengiris bawang merah dirancang dengan menggunakan teknologi sederhana dan sistem operasional yang mudah digunakan. Mesin pengiris bawang dirancang menggunakan penggerak motor listrik dengan kapasitas produksi yang cukup besar, yaitu 20–30 kg/jam. Selain itu, mesin pengiris bawang merah memiliki keunggulan dalam pengaturan ketebalan pemotongan bawang merah yang dikehendaki. Diharapkan, melalui penyediaan mesin pengiris bawang merah yang inovatif tersebut akan mampu meningkatkan produktivitas kerja pengusaha bawang merah di Kenagarian Talang Babungo dengan estimasi ± 400% peningkatan hasil produksi dibandingkan dengan metode pengirisan secara manual. Hal ini juga akan mendorong peningkatan roda ekonomi dan kesejahteraan masyarakat setempat.
A Study on the utilization of areca nut husk fiber as a natural fibre reinforcement in composite applications: A systematic literature review Makruf, Zulhan Insan; Afnison, Wanda; Rahim, Bulkia
Journal of Engineering Researcher and Lecturer Vol. 3 No. 1 (2024): Regular Issue
Publisher : Researcher and Lecturer Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58712/jerel.v3i1.123

Abstract

This paper presents a systematic literature review of published research on the use of areca nut bark fibres as a reinforcing material in polymer composites. A total of 22 research articles published in Scopus-indexed journals were identified and analysed in depth. In addition, this article presents current issues related to areca nut husk fibre (ANHF) as a reinforcement in composites using the VOSviewer tool. In this article, the authors explains the processing stages of ANHF before it is used as a reinforcement in composites. The chemical treatments carried out are also summarised in this article. Not all types of resins available on the market have been used as matrix in the manufacture of areca nut shell fibre composites. The use of additives derived from natural materials has also been found to be effective in improving the quality of ANHF composites. This article also highlights the need for further research to improve the quality of areca nut husk fibre composites and discusses the unanswered aspects of the published research.
Pengaruh Pengetahuan Tentang Dunia Kerja dan Pengalaman Praktik Industri terhadap Kesiapan Kerja Siswa Kelas XII Jurusan Permesinan SMK Negeri 1 Sumatera Barat Falah, M. Jalaluddin; Purwantono, Purwantono; Afnison, Wanda; Efendi, Fiki
ARZUSIN Vol 4 No 4 (2024): AGUSTUS
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/arzusin.v4i4.3480

Abstract

This research aims to: (1) 1. Find out the influence of knowledge about the world of work on the work readiness of class 1 West Sumatra (3) To determine the influence of knowledge about the world of work and experience of industrial work practices on the work readiness of class XII students majoring in machinery at SMK Negeri 1 West Sumatra. This research is ex-post facto research with a quantitative approach. The research subjects were class Data collection uses a questionnaire. Analysis prerequisite tests include normality tests, linearity tests and multicollinearity tests. The data analysis technique used is simple regression for the first and second hypotheses and multiple regression analysis for the third hypothesis. The results of this research are: (1) there is a positive and significant influence of knowledge about the working world on the work readiness of 12th-grade students majoring in Mechanical Engineering at SMK Negeri 1 Sumatera Barat, as indicated by an rx1y value of 0.488, an r2x1y value of 0.238, and a t-value greater than the t-table value (4.216 > 2.002); (2) there is a positive and significant influence of industrial work practice experience on the work readiness of 12th-grade students majoring in Mechanical Engineering at SMK Negeri 1 Sumatera Barat, as indicated by an rx2y value of 0.558, an r2x2y value of 0.311, and a t-value greater than the t-table value (5.072 > 2.002); (3) there is a positive and significant influence of knowledge about the working world and industrial work practice experience on the work readiness of 12th-grade students majoring in Mechanical Engineering at SMK Negeri 1 Sumatera Barat, as indicated by an rx(1,2)y value of 0.598, an r2x(1,2)y value of 0.358, and an F-value greater than the F-table value (15.603 > 3.162).
Pengembangan Simulator Sistem Bahan Bakar EFI (Electronic Fuel Injection) Sepeda Motor berbantuan QR Code bagi Guru dan Siswa Vokasi Hidayat, Nuzul; Setiawan, M. Yasep; Muslim, Muslim; Sardi, Juli; Yanto, Doni Tri Putra; Afnison, Wanda
Jurnal Pendidikan Teknik Elektro Vol 5 No 2 (2024): Jurnal Pendidikan Teknik Elektro
Publisher : Jurusan Teknik Elektro Fakultas Teknik Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jpte.v5i2.490

Abstract

Developing a QR Code-assisted simulator for Electronic Fuel Injection (EFI) systems aims to enhance teachers' and students' understanding of EFI technology in automotive education. EFI is a technology that electronically regulates vehicle fuel supply based on data collected from engine sensors. In practice, learning about EFI often requires expensive and hard-to-access physical equipment. Therefore, the QR Code-based simulator was developed as an innovative solution. This simulator enables students and teachers to access interactive content about the components and workings of the EFI system by scanning QR Codes linked to digital simulations. This approach makes the learning process more practical, interactive, and accessible. Research findings indicate that using this simulator significantly improves students' understanding of EFI concepts. Teachers also benefit from this tool, making teaching materials more engaging and comprehensible. This technology addresses the limitations of practical equipment, giving students a better opportunity to deeply understand EFI systems without relying on costly physical devices.
Studi Eksperimen Dampak Thermal Pengereman Pada Sistem Rem Cakram Satria, Andam; Afnison, Wanda; Waskito, Waskito; Yanti Sari, Delima
Jurnal Pendidikan Tambusai Vol. 9 No. 1 (2025)
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jptam.v9i1.25422

Abstract

Penelitian ini bertujuan untuk mengetahui peningkatan suhu terhadap piringan cakram dengan tipe solid, ventilated, dan wave untuk sepeda motor matic. Metode penelitian yang digunakan adalah eksperimen dengan menentukan batasan waktu putar selama 5 menit dan tekanan pada tuas rem sebesar 40 psi. Bagaimana suhu pada piringan cakram meningkat seketika saat diberi tekanan dari kampas secara terus menerus. Peningkatan suhu yang terlalu tinggi ini lah yang bisa mengakibatkan kurangnya performa pengereman, ketika piringan cakram menjadi terlalu panas menyebabkan daya cengkram antara piringan cakram dengan kampas rem tidak bekerja dengan baik dan penurunan sistem kinerja rem. Peningkatan suhu yang berlebihan pada piringan cakram dapat menyebabkan penurunan daya cengkram antara piringan cakram dan kampas rem, yang berpotensi menyebabkan pengereman yang kurang efektif dan berbahaya, terutama pada situasi darurat atau pengereman mendadak. Oleh karena itu, pemilihan piringan cakram yang tepat sangat penting untuk menjaga kestabilan performa pengereman dan mengurangi risiko terjadinya kegagalan sistem rem.
Analisis Variasi Jumlah Sudu Terhadap Torsi Yang Dihasilkan Pada Turbin Vortex Aswanto, Trio Harinaldi; Purwantono, Purwantono; Putra, Randi Purnama; Afnison, Wanda
Asian Journal of Science, Technology, Engineering, and Art Vol 1 No 2 (2023): Asian Journal of Science, Technology, Engineering, and Art
Publisher : Darul Yasin Al Sys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/ajstea.v1i2.2070

Abstract

Water turbines, particularly vortex turbines, represent a promising alternative energy source with significant potential for development. Vortex turbines are a relatively novel type of water turbine, offering ample opportunities for further research. This study aims to assess the efficiency of different blade variations, specifically 3, 4, and 5 blades. Computational Fluid Dynamics (CFD) analysis was conducted using Solidworks 2022 software. The simulation results indicate that the torque values for 3 blades, 4 blades, and 5 blades were 0.26 Nm, 3.02 Nm, and 4.96 Nm, respectively. Efficiency calculations were performed using a formula, yielding efficiencies of 0.9% for 3 blades, 11.91% for 4 blades, and 20.74% for 5 blades. These results suggest that higher blade counts lead to greater efficiency.
Analisis Keluhan Muskuloskeletal pada Pengemudi Mobil Prototype Menggunakan Metode Nordic Body Map Khairul, Farid; Afnison, Wanda; Irzal, Irzal; Milana, Milana
Jurnal Vokasi Mekanika (VoMek) Vol 7 No 2 (2025): Jurnal Vokasi Mekanika
Publisher : Departemen Teknik Mesin Fakultas Teknik Unversitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/vomek.v7i2.862

Abstract

The depletion of fossil energy reserves, especially oil and natural gas, has driven innovations in energy-efficient vehicles, including through the Energy-Efficient Car Contest (KMHE). In developing prototype cars for this competition, driver ergonomics is often overlooked. This study aims to analyze musculoskeletal complaints experienced by prototype car drivers from the Faculty of Engineering at UNP. The main instrument used was the Nordic Body Map (NBM) questionnaire, administered to three drivers after they performed a 20-minute static driving simulation. The collected data were analyzed and categorized based on complaint levels. The results showed that the most frequent complaints occurred in the lower back (score 12), followed by the lower neck, buttocks, and hips (score 11). The average overall score was 71.67, indicating a high-risk category. The highest individual score was 89 (Driver 3), and the lowest was 62 (Driver 1). These complaints were caused by the absence of an ergonomic driver seat in the prototype car. The study concluded that the current cockpit design is not ergonomically adequate, posing a risk of injury. Therefore, it is recommended that the design team immediately create a more upright driver seat with thigh support to enhance comfort and reduce musculoskeletal complaints.
Ergonomic Assessment of Driver Posture in Prototype Vehicles for Kontes Mobil Hemat Energi (KMHE) Using CATIA Afnison, Wanda; Khairul, Farid; Irzal, Irzal; Milana, Milana
MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Vol 7 No 2 (2025): Motivection : Journal of Mechanical, Electrical and Industrial Engineering
Publisher : Indonesian Mechanical Electrical and Industrial Research Society (IMEIRS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46574/motivection.v7i2.442

Abstract

The ergonomic design of the cockpit is crucial for improving driver comfort and safety, particularly in prototype vehicles for energy efficiency competitions. This study evaluates the driver’s body posture using the Rapid Upper Limb Assessment (RULA) technique to propose design improvements that support better posture and reduce physical strain. The research methodology includes analyzing musculoskeletal risk levels through RULA, supported by the Human Activity Analysis tool in CATIA. The evaluation was conducted on the FT UNP prototype car in the Kontes Mobil Hemat Energi (KMHE), revealing a RULA score of 6, indicating a high risk of musculoskeletal issues. The findings suggest the need for redesigning the cockpit to enhance posture, including adjustments to the seat tilt, steering wheel position, and pedals. These ergonomic improvements are expected to reduce driver fatigue, enhance performance, and minimize injury risks.
Analisis Faktor-Faktor yang Mempengaruhi Minat Mahasiswa Angkatan 2024 Memilih Program Studi S1 Pendidikan Teknik Mesin FT UNP Jumadil Ashari; Andre Kurniawan; Junil Adri; Wanda Afnison
Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 3 No. 4 (2025): Agustus: Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer
Publisher : Asosiasi Riset Teknik Elektro dan Informatika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/mars.v3i4.973

Abstract

This research investigates the underlying factors that shape the interest of students from the 2024 cohort in enrolling in the Bachelor of Mechanical Engineering Education Program at the Faculty of Engineering, Universitas Negeri Padang. Utilizing a descriptive quantitative methodology, data were gathered through a structured, closed-ended questionnaire administered to the entire cohort, which consisted of 89 students. The analysis reveals that the overall level of student interest is categorized as high, with a notable percentage of 55%. Several key variables were identified as influential: (1) self-awareness factors encompassing physical capabilities, intellectual aptitude, intrinsic motivation, and innate talent were rated in the very high category at 56%; (2) familial influences such as the provision of information, emotional support, and parenting styles also ranked very high at 46%; (3) school-related elements including the accessibility of school information systems, teacher roles, peer dynamics, and hands on learning experiences were classified in the high category with 44%; and (4) social media engagement specifically the frequency of use and the quality of educational content was likewise in the high category, scoring 48%. These findings underscore the multifaceted nature of student decision-making, with self-awareness emerging as the most prominent determinant in shaping academic program choices. The study highlights the need for educational institutions to consider these interrelated dimensions when developing recruitment strategies and academic guidance frameworks.
Co-Authors - Primawati A, Yufrizal Abdilah, Zikri Adityo Adityo, Adityo Ahlal Fikri, Rivandy Ahmad Arif Ahmad Shafwan Hadi Alparis Nico Putra Utama Altarisi, Muhammad Athar Ambiyar, Ambiyar Andira, Muhammad Fadil Andre Kurniawan Andre Kurniawan Andre Kurniawan Andri Fadhil Arwizet Arwizet, Arwizet Asnil Asnil Aswanto, Trio Harinaldi Bahrul Amin Budi Syahri Bulkia Rahim Delima Yanti Sari Delima Yanti Sari Donny Fernandez Dori Yuvenda Dwiprima Elvanny Myori, Dwiprima Elvanny Eddy Marheni Eko Indrawan Eko Purnomo Elviza Yeni Putri Erizon, Nelvi Erzeddin Alwi Fadhli Ranuharja Faisal Amri Falah, M. Jalaluddin Fauza, Anna Niska Febri Prasetya Fiki Efendi Fivia Eliza Hardi, Farid Maulana Hari Sabarno Hasan Maksum Hasnul Fikri Hendra Dani Saputra Hukmanul Fikri Ihsan, Fachrul ilham yuliady Irma Yulia Basri Irzal Irzal Irzal, Irzal Jermaina, Nina Juli Sardi Jumadil Ashari Junil Adri Khairul, Farid Krismadinata Krismadinata, Krismadinata M. Yasep Setiawan Makruf, Zulhan Insan Masykur Masykur Milana Milana Muhammad Athar Altarisi Muhammad Farhan Muhammad Restu Alhamdi Muslim Muslim Mutiara Felicita Amsal Nikolas Verdian Guci Nurdin Hendri Nuzul Hidayat, Nuzul Okky Syaifatul, Achmad Purwanto, Wawan Purwantono Purwantono Purwantono, Purwantono Putra, Nandri Pratama Putra, Randi Purnama R. Chandra Rahmadani Rahmadani Rahmadiawan, Dieter Rahmat Hidayat Ramadhan, Raihan Randi Purnama Putra Remon Lapisa Resti Apriliyanti Reyvanda Ayusran Rifelino Rifelino Rizky Rahman Satria, Andam Sugiarto, Toto Utomo Wisesa, Budi Wagino Wakhinuddin Wakhinuddin, Wakhinuddin Waskito Waskito Waskito, Waskito Wifa, Iklil Yanto, Doni Tri Putra Yoga Volanda Saputra Yogi Dian Alfana Yuliady, Ilham Zainal Abadi Zulfadli, Fadli