Claim Missing Document
Check
Articles

Replacement Analysis of Official Vehicles at Universitas Negeri Padang with Electric Vehicles Firdaus, Pangeran Albari Ramadino; Milana, Milana; Saputra, Hendra Dani; Rifdarmon, Rifdarmon
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.v7i2.433

Abstract

Replacement analysis is used to evaluate whether the currently used asset needs to be replaced with a newer and more economically efficient one. This study aims to determine the feasibility of replacing the official service vehicles at Universitas Negeri Padang from conventional vehicles to electric vehicles based on an economic analysis. Data on official service vehicles were collected from the facilities and infrastructure division of Universitas Negeri Padang, while data on electric vehicles were obtained through a literature review. Data processing was conducted using the Equivalent Uniform Annual Cost (EUAC) method. The results indicate that replacing the official service vehicles at Universitas Negeri Padang from conventional vehicles to electric vehicles is not yet feasible.
Workload Analysis Using the NASA-TLX Method on Mechanics at PT Statika Mitrasarana Padang City Joni, Rahmi Rahmahwati; Milana, Milana; Fernandez, Donny; Saputra, Hendra Dani
MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Vol 7 No 1 (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.v7i1.436

Abstract

Companies that own heavy equipment require regular maintenance. The amount of workload received by mechanic in the repair and maintenance section of heavy equipment units causes them to experience physical fatigue and frustration due to the workload and working hours being conducted outside of normal working hours. This study aims to determine the workload of mechanic at PT. Statika Mitrasarana. Data collection was carried out through direct observation of the mechanic, distribution of questionnaires, and interviews regarding the workload. The analysis of workload was conducted using the National Aeronautics and Space Administration Task Load Index (NASA TLX) method. From the results of the mechanic workload, an overall average of 83.6 was obtained. The highest workload has an average of 92.66 and the lowest 65.33. On the most dominant indicator of workload the physical demands have an average of 348. The measurement findings can help management consider additional steps, such as reducing and redistributing the mechanic workload.
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.
Upskilling automotive engineering teacher competence: Learning innovation through QR Codes Milana, Milana; Setiawan, M. Yasep; Ranuharja, Fadhli; Hidayat, Nuzul; Purwanto, Wawan
Community Empowerment Vol 10 No 4 (2025)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ce.12573

Abstract

This community service activity aims to enhance the quality and accessibility of learning materials in automotive engineering through digitalizing teaching materials based on Quick Response (QR) codes. The training covered introducing digitalization concepts, QR code creation, and their implementation in teaching materials through lectures, demonstrations, practice, and evaluation. The results of this activity indicate an increased understanding among participants regarding digital technology and its benefits in the learning process. Teacher's competence in developing technology-based teaching modules, including integrating QR codes and the potential of TTS AI-based videos, has significantly improved. The teachers demonstrated high enthusiasm for implementing the learned materials.
Rancang Bangun SST Pembuka Pegas Katup Berbasis Pneumatik Tanpa Melepas Kepala Silinder Fadhil, Fharizal; Nanda, Iffarial; Fernandez, Donny; Milana
JTPVI: Jurnal Teknologi dan Pendidikan Vokasi Indonesia Vol. 3 No. 2 (2025): JTPVI: Jurnal Teknologi dan Pendidikan Vokasi Indonesia
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jtpvi.v3i2.306

Abstract

Penelitian ini bertujuan untuk mengembangkan Special Service Tool (SST) pembuka pegas katup berbasis pneumatik yang memungkinkan penggantian seal katup tanpa perlu melepas kepala silinder dari mesin kendaraan, khususnya pada mesin mobil Avanza K3-Ve. Penelitian ini menggunakan pendekatan Research and Development (R&D) dengan model DDD-E (Decide, Design, Develop, Evaluate). Hasil penelitian menunjukkan bahwa penggunaan Special Service Tool (SST) pembuka pegas katup berbasis pneumatik untuk penggantian seal katup secara signifikan menurunkan waktu pengerjaan dari rata-rata 412 menit menggunakan metode konvensional menjadi 279 menit. Efisiensi waktu yang dicapai sebesar 32,28%. Dengan demikian, alat ini dapat meningkatkan efisiensi dan efektivitas dalam proses perawatan mesin kendaraan. This research aims to develop a pneumatic-based valve spring opener Special Service Tool (SST) that allows valve seal replacement without the need to remove the cylinder head from the vehicle engine, especially on the Avanza K3-Ve car engine. This research uses a Research and Development (R&D) approach with the DDD-E model (Decide, Design, Develop, Evaluate). The results showed that the use of a pneumatic-based valve spring opener Special Service Tool (SST) for valve seal replacement significantly reduced the processing time from an average of 412 minutes using conventional methods to 279 minutes. The time efficiency achieved was 32.28%. Thus, this tool can increase efficiency and effectiveness in the vehicle engine maintenance process.
Efektivitas Sosialisasi K3 dalam Pelaksanaan Praktek di Program Keahlian Teknik Kendaraan Ringan SMK PGRI 2 Lahat Apriansyah; Milana; Sugiarto, Toto; Saputra, Hendra Dani
JTPVI: Jurnal Teknologi dan Pendidikan Vokasi Indonesia Vol. 3 No. 3 (2025): JTPVI: Jurnal Teknologi dan Pendidikan Vokasi Indonesia
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jtpvi.v3i3.305

Abstract

Penelitian ini menerapkan efektivitas sosialisasi K3 dan Kedisiplinan dalam praktek di SMK PGRI 2 Lahat. dalam tiga tahap yaitu pretest–sosialisai–posttest.penelitian ini, (1) mendeskripsikan K3 dalam pelaksaan praktek di  program keahlian teknik kendaraan ringan siswa kelas X SMK PGRI 2 Lahat sebelum menerapkan efektivitas  Sosialisasi K3, (2) mendeskripsikan K3 dalam pelaksaan praktek di  program keahlian teknik kendaraan ringan siswa kelas X SMK PGRI 2  Lahat setelah menerapkan efektivitas  Sosialisasi K3, (3) menjelaskan pengaruh efektivitas  Sosialisasi K3 siswa kelas X SMK PGRI 2 Lahat Pretest dan posttest. Metode penelitian deskriptif analisis. Hasil sosialisasi penelitian ini, Pertama sebelum/pretest, sosialisasi K3 berada pada kualifikasi Hampir cukup dengan rata-rata nilai 45,6172. Kedua, setelah/posttest berada pada kualifikasi Baik Sekali (BS) rata-rata 90,4891. Ketiga, uji-t hipotesis alternatif (H1) diterima pada taraf signifikan 95% dan t-hitung(1,624 > 0,147).   This study applies the effectiveness of K3 socialization and Discipline in practice at SMK PGRI 2 Lahat. three stages pretest–socialization–posttest.  this study are, (1) to describe K3 in the implementation of practice in the light vehicle engineering expertise program of class X students of SMK PGRI 2 Lahat before implementing the effectiveness of K3 Socialization,(2) to describe K3 in the implementation practice in the vehicle engineering expertise program for students class X SMK PGRI 2 Lahat after implementing the effectiveness of K3 Socialization, (3) the effect of the effectiveness of K3 Socialization for students class X of SMK PGRI 2 Lahat Pretest and posttest. method descriptive analysis. Resultst this research socialization, First, before/pretest conducting K3 socialization are at the qualification Almost enough with an average score of 45.6172. Second, after/posttest is at an average 90.4891 Good (BS) qualifications. Third, the alternative hypothesis (H1) t-test is accepted at a significant level 95% and t-count (1.624 > 0.147).
Analysis of Musculoskeletal Disorders in Electric Vehicle Prototype Drivers Using the Nordic Body Map Method Ayusran, Reyvanda; Afnison, Wanda; Irzal, Irzal; Milana, Milana
Jurnal Vokasi Mekanika (VoMek) Vol 7 No 3 (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.v7i3.885

Abstract

The dwindling availability of fossil-based energy sources has spurred breakthroughs in the evolution of eco-conscious transportation, one of which is manifested in the Indonesian Electric Car Competition (Kompetisi Mobil Listrik Indonesia – KMLI). In this arena, collegiate teams engineer lightweight, single-occupant electric prototype vehicles emphasizing energy thrift. Nonetheless, spatial constraints and performance optimization frequently take precedence over ergonomic design, heightening the likelihood of musculoskeletal strain. This investigation seeks to examine bodily discomforts related to the musculoskeletal system as encountered by the operator of a prototype electric vehicle, employing the Nordic Body Map (NBM) assessment tool. The inquiry adopted a descriptive format via a focused case analysis involving the primary driver from the Megathrust Eco Team representing Universitas Negeri Padang (UNP) in the 2024 KMLI. Post-operation, the participant filled out the NBM form to denote discomfort regions, referencing a Likert-type scale from 1 (no pain) to 4 (extreme pain). The outcomes identified the cervical region, shoulders, dorsum, and lumbar zone as areas with elevated distress, classified under Pain and Intense Pain levels, thus revealing substantial ergonomic concerns. From these insights, it is inferred that the seating layout and cockpit geometry must be reconsidered and fine-tuned according to the driver’s anthropometric dimensions to alleviate physical complaints and boost vehicular comfort. The study aspires to aid in fostering electric vehicles that are more attuned to human-centered design, balancing well-being and operational safety.
PIPN Life Skill: Creating motorcycle workshop entrepreneurs for unemployed communities in Nagari Sialang Gaung Milana, Milana; Hidayat, Nuzul; Putra, Dwi Sudarno; Baharudin, Agus; Purwanto, Wawan
Community Empowerment Vol 10 No 8 (2025)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ce.14586

Abstract

The high unemployment rate in Nagari Sialang Gaung, reaching 30–40% of the productive-age population, poses a serious problem hindering community welfare. This situation is paradoxical given the significant opportunities in the motor vehicle service sector, driven by an estimated 10% annual increase in the number of motorcycles. Unfortunately, this market potential remains largely untapped due to the lack of technical and entrepreneurial skills among the unemployed youth. The Prodi and Nagari Integration Program (PIPN) Life Skill was established to bridge this gap with a dual objective, enhancing motorcycle mechanic competence and fostering entrepreneurship through hands-on practice. The program was comprehensively designed, encompassing needs analysis, development of a curriculum based on local potential, technical training (covering both conventional and EFI injection systems), instruction in workshop management, and post-training business mentoring. Program results indicate a significant increase in participant competence, with 85% demonstrating the ability to perform repairs independently and 30% having successfully initiated small-scale repair businesses. This success underscores the critical importance of synergy between universities and village governance in empowering communities based on sustainable local potential, thereby contributing directly to the achievement of the Sustainable Development Goals (SDGs).
Aerodynamic Approach to Two-Passenger City Car Design: A Study of Square Back and Compact Shapes Putra, Randi Purnama; Yuvenda, Dori; Lapisa, Remon; Afnison, Wanda; Milana, Milana; Setiawan, M. Yasep; Arif, Ahmad; Harmanto, Dani
Automotive Experiences Vol 8 No 2 (2025)
Publisher : Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.13686

Abstract

The development of lightweight electric cars for urban mobility requires efficient aerodynamic design without sacrificing space efficiency. This study presents a novel method by investigating the combination of a two-seater city car's compact dimensions and square back shape, which has not been extensively researched for low- to medium-velocity vehicles. This study's objective is to assess the design's aerodynamic performance using numerical simulations using the Computational Fluid Dynamics (CFD) approach. The vehicle model is designed with a compact body and square back, which is commonly used in small vehicles with high maneuverability requirements. The simulations are conducted at three different air velocity levels: 10, 20, and 30 m/s. The results of the study showed an increase in the value of the drag coefficient (Cd) along with an increase in flow velocity. At a velocity of 10 m/s, the Cd value was recorded at 0.4536. When the velocity increased to 20 m/s, the drag coefficient increased slightly to 0.4563. Further increases in velocity to 30 m/s resulted in a Cd value of 0.4581. This Cd value shows the consistency of aerodynamic performance with increasing velocity, with fluctuations that remain within the efficiency limits of lightweight vehicles. The pressure distribution contour shows high-pressure accumulation at the front and low pressure at the rear of the vehicle, which generates large turbulent wakes in the rear area and contributes to increased drag. These findings indicate that the square rear body design faces significant aerodynamic challenges. Therefore, design strategies such as adding a rear spoiler, using a rear diffuser, and optimizing the rear body angle are suggested as potential solutions to improve flow efficiency.
Peningkatan Kompetensi Siswa Melalui Media Pembelajaran Programmed Fuel Injection Arif, Ahmad; Milana, Milana; Sugiarto, Toto; Purwanto, Wawan; Hidayat, Nuzul
Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat Vol 22, No 2 (2022): Suluah Bendang: Jurnal Ilmiah Pengabdian kepada Masyarakat
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/sb.02190

Abstract

SMK memiliki peran dalam peningkatan kecerdasan, pengetahuan, kepribadian, akhlak mulia, dan keterampilan sebagai bekal untuk hidup mandiri dan siap kerja. Tamatan SMK diharapkan mempunyai kompetensi yang baik agar siap pakai dan terampil, sehingga memudahkan industri untuk medapatkan tenaga kerja sesuai posisi yang kebutuhan. Tetapi berdasarkan data BPS pada Agustus 2020, TPT SMK adalah 8,49% dan tertinggi dibandingkan jenjang pendidikan lainnya. Masalah ini terjadi karena belum selarasnya antara kompetensi tamatan SMK dengan kebutuhan industri. Penyelarasan kompetensi tamatan SMK terhadap kebutuhan industri tergantung pada sumber daya serta sarana/prasarana yang dimiliki SMK. Permasalahannya sarana/prasarana praktik yang dimiliki SMK masih sedikit dan kondisinya kurang memadai. Tamatan SMK Jurusan Teknik Sepeda Motor seharusnya memiliki pengetahuan dan keterampilan teknologi programmed fuel injection sepeda motor. Maka kegiatan ini bertujuan meningkatkan kompetensi siswa SMK melalui rancang bangun simulator dan pelatihan teknologi programmed fuel injection sepeda motor. Berdasarkan evaluasi pelaksanaan kegiatan, terdapat peningkatan kompetensi siswa tentang teknologi programmed fuel injection sepeda motor, sehingga diharapkan kualitas tamatan SMK Jurusan Teknik Sepeda Motor semakin baik dan dapat menurunkan TPT tamatan SMK.
Co-Authors Adi, Alexie Herryandie Bronto Afriza, Weny Late Ahmad Arif Ahmad Arif Andrizal Apriansyah Ardiansyah, Ari Ayusran, Reyvanda Azani, Magribfa Baharudin, Agus Bakar, Muhammad Jamil Dandi Bakti Dedi Setiawan Delima Yanti Sari Deni Setiadi, Deni DESTI ARIANI Donny Fernandez Dori Yuvenda Dwi Sudarno Putra Dwi Sudarno Putra Erawati, Susi Eri Wirdianto Erzeddin Alwi Fadhil, Fharizal Fadhli Ranuharja Fauza, Anna Niska Firdaus, Pangeran Albari Ramadino Hamid Nasrullah Handika, Rival Harmanto, Dani Harris Fedriansyah Harris Yudha Pratama Hasan Maksum Hendra Dani Hendra Dani Saputra Herlando Ikhwan, Aroma Irfan Nugraha Putra Mukhti Irma Yulia Basri Irzal, Irzal Joni, Rahmi Rahmahwati Juli Sardi Kevin Lisson Putra Khairul, Farid M Giatman M Nasir M Nasir M. Yasep Setiawan Martias Martias Martias Martias Meiyola Syaflinda Muhammad Andre Nasrinur Andre Muhammad Farhan Muhammad Farid Reza Frinison Muhammad Hamdil Qashwa Munawir Harahap Muslim Muslim Nanda Farhan Mardhatillah Nanda, Iffarial Nizwardi Jalinus Nuzul Hidayat, Nuzul Oktaviani, Ranti Opi Tananda Patrisina, Reinny Pinto Pratama Afosma Purwanto, Wawan Putra Jasman, Yusril Putra, Dede Prima Putra, Randi Purnama Rahmad Rahmad Rahman, Anatachia Ramadhania, Amdanova Rasyid Ridho Harahap Remon Lapisa Remon Lapisa Remon Lapisa Rifdarmon Rifdarmon, Rifdarmon Salahudin R, Fahrul Sugiarto, Toto Sulaiman, Agung Sulastri, Ayu Sutrio Yatmoko, Bambang Syafmi Arifan Ma'ruf Tyawarman, Zhery WAGINO Wagino Wakhinuddin S Wakhinuddin Wakhinuddin, Wakhinuddin Wanda Afnison Wirdianto, Eri Zikri Zikri