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All Journal Jurnal Pendidikan Teknologi dan Kejuruan JINOP (Jurnal Inovasi Pembelajaran) VANOS Journal of Mechanical Engineering Education Edukasi: Jurnal Pendidikan INVOTEK: Jurnal Inovasi Vokasional dan Teknologi Ensiklopedia of Journal Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Journal of Applied Engineering and Technological Science (JAETS) MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering PAKAR Pendidikan Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat Community Empowerment MSI Transaction on Education AEEJ : Journal of Automotive Engineering and Vocational Education Mechanical Engineering for Society and Industry Automotive Experiences Ensiklopedia Research and Community Service Review JTPVI: Jurnal Teknologi dan Pendidikan Vokasi Indonesia Edumaspul: Jurnal Pendidikan
Ahmad Arif
Automotive Engineering Department, Universitas Negeri Padang
Aerospace Engineering Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Public Health Social Sciences Transportation Other

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ANALISIS TINGKAT PENGETAHUAN PADA SOAL UAS PRODUKTIF OTOMOTIF SEMESTER GENAP 2024/2025 KELAS XII TKR SMK NEGERI TEKNOLOGI DI KOTA PADANG Muhammad Al Adaby; Toto Sugiarto; Ahmad Arif; Muslim Muslim
Ensiklopedia of Journal Vol 8, No 2 (2026): Vol. 8 No. 2 Edisi 3 Januari 2026
Publisher : Lembaga Penelitian dan Penerbitan Hasil Penelitian Ensiklopedia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33559/eoj.v8i2.3710

Abstract

This study aims to analyze the distribution of factual, conceptual, procedural, and metacognitive knowledge levels in Final Semester Examination (UAS) questions for automotive productive subjects created by teachers at State Vocational High Schools (SMK) in Padang City. This research employs a quantitative descriptive design with a single variable of knowledge level based on Anderson's taxonomy. The research objects include 160 multiple-choice questions from the even semester UAS 2024/2025 from four State Vocational High Schools in Padang (SMKN 1 West Sumatra, SMKN 1 Padang, SMKN 5 Padang, and SMKN 8 Padang). The research instrument uses knowledge level analysis sheets based on operational verbs and question contexts. Data analysis techniques employ quantitative descriptive analysis by calculating the percentage of each knowledge level. The results show the overall distribution of knowledge levels: conceptual 49.375% (79 questions), procedural 18.75% (30 questions), factual 16.25% (26 questions), and metacognitive 15.625% (25 questions). There are significant variations among schools, particularly at SMKN 1 Padang with 70% conceptual dominance and SMKN 5 Padang with 30% metacognitive. Compared to BSNP (2018) recommendations, significant deviations occur where conceptual far exceeds standards (49.375% vs 10-20%) and procedural is below standards (18.75% vs 50-60%). However, these differences can be explained by the characteristics of vocational education that integrates written and practical assessments. This study recommends the need for teacher training in developing Bloom taxonomy-based questions, developing standardized question banks, and adjusting knowledge level distribution standards specific to vocational education.Keywords: knowledge levels, Anderson's taxonomy, final examination questions, automotive vocational education, HOTS
Analisis Kombinasi Busi Platinum, Pengapian +2°, dan Water Injection terhadap Efisiensi Pembakaran dan Ketahanan Mesin Sepeda Motor Empat Langkah Al-Thoriq Viroza; Wawan Purwanto; Toto Sugiarto; Ahmad Arif; Ahmad Juanda
JTPVI: Jurnal Teknologi dan Pendidikan Vokasi Indonesia Vol. 4 No. 2 (2026): 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.v4i2.346

Abstract

Penggunaan sepeda motor di Indonesia terus meningkat, memicu dua masalah utama: keterbatasan bahan bakar fosil dan meningkatnya polusi udara. Penelitian sebelumnya banyak menyoroti dampak lingkungan, namun aspek ketahanan mesin belum dikaji secara mendalam. Penelitian ini bertujuan menganalisis pengaruh kombinasi busi platinum, pengapian +2°, biogasoline E25, dan sistem Water Injection berbasis ultrasonic mist maker terhadap durabilitas mesin sepeda motor empat langkah. Metode eksperimen dilakukan dengan membandingkan kondisi standar (pertalite) dan perlakuan kombinasi selama 110 jam operasional. Hasil penelitian menunjukkan penurunan signifikan massa deposit karbon dari 680 mg menjadi 260 mg serta volume dari 378 mm³ menjadi 144 mm³, atau pengurangan lebih dari 61%. Temuan ini membuktikan bahwa kombinasi biogasoline dan Water Injection tidak hanya mengurangi pembentukan deposit karbon, tetapi juga berpotensi memperpanjang usia pakai mesin serta mendukung teknologi transportasi ramah lingkungan. The rapid increase in motorcycle use in Indonesia has created two major challenges: fossil fuel depletion and rising air pollution. While previous studies mainly focused on environmental impacts, engine durability remains underexplored. This study aims to evaluate the effects of combining platinum spark plugs, +2° ignition timing, E25 biogasoline, and a Water Injection system using an ultrasonic mist maker on the durability of four-stroke motorcycle engines. An experimental method was conducted by comparing standard conditions (pertalite) with the combined treatment over 110 hours of operation. Results indicated a significant reduction in carbon deposits, with mass decreasing from 680 mg to 260 mg and volume from 378 mm³ to 144 mm³, representing a reduction of over 61%. These findings highlight that the integration of biogasoline and Water Injection not only reduces carbon deposit formation but also extends engine lifespan and supports environmentally friendly transportation technologies.
Simulasi Kekuatan Rangka Trainer Sepeda Listrik sebagai Media Pembelajaran SMK dengan Metode Analisis Elemen Hingga Wendika Okvianda; Ahmad Arif; Wawan Purwanto; M.Yasep Setiawan; Jheri Hermanto
JTPVI: Jurnal Teknologi dan Pendidikan Vokasi Indonesia Vol. 3 No. 4 (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.v3i4.366

Abstract

Penelitian ini menganalisis kekuatan struktural rangka trainer sepeda listrik sebagai media pembelajaran di SMK. Rangka dirancang dari pipa baja dan dianalisis menggunakan simulasi Finite Element Analysis pada perangkat lunak SolidWorks 2021. Tiga material dibandingkan, yaitu Baja Chromoly SAE 4130, Aluminium 6061-T6, dan Hi-Ten Steel (AISI 1015). Pembebanan statis 120 kg diterapkan pada titik dudukan pengendara, dengan tumpuan tetap pada titik hubung rangka sehingga diperoleh distribusi tegangan von Mises, displacement, dan safety factor. Hasil simulasi menunjukkan bahwa Baja Chromoly SAE 4130 memiliki kombinasi tegangan, deformasi, dan faktor keamanan paling baik, sedangkan Aluminium 6061-T6 menghasilkan displacement terbesar dan Hi-Ten Steel memiliki margin keamanan terendah. Nilai Safety Factor Minimum seluruh material masih kurang dari satu, sehingga desain rangka perlu dioptimasi. Temuan ini menjadi dasar pemilihan material dan perbaikan desain rangka trainer sepeda listrik di lingkungan pendidikan vokasi untuk mendukung pembelajaran berbasis praktik rekayasa. This study analyzes the structural strength of an electric bicycle trainer frame used as an instructional medium in vocational high schools. The frame is constructed from steel pipes and evaluated through Finite Element Analysis simulation using SolidWorks 2021. Three materials are compared, namely Chromoly Steel SAE 4130, Aluminum 6061-T6, and Hi-Ten Steel (AISI 1015). A static load of 120 kg is applied at the rider’s seat with fixed supports at frame joints to obtain the distribution of Von Mises Stress, displacement, and safety factor. The results indicate that Chromoly Steel SAE 4130 provides the most favorable combination of Stress, deformation, and structural safety, while Aluminum 6061-T6 exhibits the largest displacement and Hi-Ten Steel the lowest safety margin. The minimum safety factor of all materials is still below one, so the frame design requires optimization. These findings guide material selection and frame redesign for engineering practice–oriented vocational education.
Rancang Bangun Trainer Sepeda Listrik Berbasis Quick Responde Code (QR Code) Untuk Media Pembelajaran Azizul Amri; Ahmad Arif; Dwi Sudarno Putra; M.Yasep Setiawan; Inna Kholidasari; Nurindah Dwiyani
JTPVI: Jurnal Teknologi dan Pendidikan Vokasi Indonesia Vol. 3 No. 4 (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.v3i4.368

Abstract

Sektor transportasi menyumbang 24% emisi CO2 global, mendorong transisi ke kendaraan listrik. SMK menghadapi keterbatasan media pembelajaran praktikum sistem sepeda listrik yang mengintegrasikan komponen fisik dengan informasi digital. Penelitian ini merancang Trainer sepeda listrik berbasis QR Code menggunakan metode R&D dengan pendekatan PPE (Planning, Production, Evaluation). Trainer dikembangkan dengan memodifikasi sepeda listrik Genio Easton S2 (motor BLDC 750W, baterai 48V 12AH), menambahkan panel transparan fiberglass dan akrilik, bracket besi hollow 4x4cm, serta integrasi tiga QR Code untuk akses konten digital (video, PPT, PDF). Validasi ahli dan uji coba menunjukkan Trainer layak kategori baik dengan sistem kelistrikan optimal, QR Code terpindai 1-2 detik, serta memiliki keunggulan visualisasi komponen jelas dan kemudahan akses materi untuk pembelajaran teknologi kendaraan listrik di SMK. The transportation sector accounts for 24% of global CO2 emissions, driving the transition to electric vehicles. Vocational schools face limitations in practical learning media for electric bicycle systems that integrate physical components with digital information. This study designed an electric bicycle Trainer based on QR Codes using the R&D method with a PPE (Planning, Production, Evaluation) approach. The Trainer was developed by modifying the Genio Easton S2 electric bicycle (750W BLDC motor, 48V 12AH battery), adding a transparent fiberglass and acrylic panel, a 4x4cm hollow iron bracket, and integrating three QR Codes for access to digital content (videos, PPT, PDF). Expert validation and testing showed that the Trainer is suitable for the good category with an optimal electrical system, QR Codes scanned in 1-2 seconds, and has the advantages of clear component visualization and easy access to materials for learning electric vehicle technology in vocational schools.
Rancang Bangun Panel Instalasi Listrik Berbasis Engineering safety untuk Oven Pengecatan Bodi Kendaraan Fawwaz Naufal; Ahmad Arif; Hasan Maksum; Donny Fernandez
JTPVI: Jurnal Teknologi dan Pendidikan Vokasi Indonesia Vol. 3 No. 4 (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.v3i4.376

Abstract

Keselamatan kerja pada ruang oven pengecatan bodi kendaraan sering terabaikan, terutama pada sistem kelistrikan yang beroperasi pada suhu tinggi dan kelembapan tinggi. Penelitian ini bertujuan merancang dan membangun panel instalasi listrik berbasis engineering safety untuk oven pengecatan di Laboratorium Teknik Otomotif Universitas Negeri Padang. Penelitian menggunakan metode Research and Development dengan model Planning, Production, and Evaluation (PPE). Panel dirancang untuk melayani beban 3.736,6 W pada tegangan 220 V, dilengkapi Miniature Circuit Breaker (MCB) 20 A, tombol Emergency Stop, sistem grounding, pilot lamp, dan thermostat yang mengacu pada standar SNI dan PUIL 2011. Validasi dua ahli menyatakan panel layak digunakan, sedangkan uji fungsional menunjukkan MCB bekerja responsif dan tombol Emergency Stop mampu memutus arus dalam waktu kurang dari 0,5 detik. Hasil ini mengindikasikan bahwa panel yang dikembangkan efektif meningkatkan keselamatan kerja dan menjadi media pembelajaran praktikum kelistrikan serta teknologi pengecatan di pendidikan vokasi otomotif. Occupational safety in painting ovens is often overlooked, particularly in electrical systems operating in high-temperature, high-humidity environments. This study designs and constructs an electrical installation panel based on engineering safety principles in the Automotive Engineering Laboratory of Universitas Negeri Padang using a Research and Development approach with the Planning, Production, and Evaluation (PPE) model. The panel supplies a load of 3,736.6 W at 220 V and is equipped with a 20 A Miniature Circuit Breaker (MCB), Emergency Stop button, grounding system, pilot lamp, and thermostat in accordance with SNI and PUIL 2011. Validation by two experts confirmed that the panel is feasible for use, while functional testing showed that the MCB operates responsively and the Emergency Stop disconnects the circuit in less than 0.5 s. These findings indicate that the panel enhances safety and provides a practical learning medium for electrical systems and painting technology in vocational automotive education.
Pengaruh Variasi Temperatur Pengeringan terhadap Ketebalan dan Homogenitas Lapisan Cat pada Pelat Logam Intan Burtian; Donny Fernandez; M.Yasep Setiawan; Ahmad Arif
JTPVI: Jurnal Teknologi dan Pendidikan Vokasi Indonesia Vol. 4 No. 1 (2026): 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.v4i1.378

Abstract

Pengecatan pada substrat logam berperan penting dalam perlindungan korosi dan sangat dipengaruhi oleh ketebalan lapisan cat. Penelitian ini bertujuan menganalisis pengaruh temperatur pengeringan oven terhadap ketebalan lapisan cat pada pelat logam. Metode yang digunakan adalah eksperimen kuantitatif dengan variasi temperatur pengeringan 40, 50, dan 60 °C selama 20 menit menggunakan cat Nitrocellulose–Alkyd; ketebalan lapisan diukur dengan mikroskop metalurgi dan dianalisis dengan ANOVA satu arah. Hasil menunjukkan bahwa kenaikan temperatur pengeringan menurunkan ketebalan lapisan cat, dengan ketebalan rata-rata 89,986 μm pada 40 °C; 78,315 μm pada 50 °C; dan 66,675 μm pada 60 °C. Nilai Fhitung (2,59) lebih kecil daripada Ftabel (5,14), sehingga perbedaan ketebalan tidak signifikan secara statistik, namun secara teknis temperatur 40 °C memberikan kombinasi terbaik antara ketebalan dan konsistensi lapisan untuk menjaga performa protektif dan estetika pengecatan. Coating metal substrates is essential for corrosion protection and strongly depends on paint coating thickness. This study investigates the effect of oven drying temperature on paint coating thickness on steel plates. A quantitative experimental method was applied using Nitrocellulose–Alkyd paint dried at 40, 50, and 60 °C for 20 min; coating thickness was measured with a metallurgical microscope and analyzed using one-way ANOVA. The results show that increasing drying temperature decreases coating thickness, with average values of 89.986 μm at 40 °C, 78.315 μm at 50 °C, and 66.675 μm at 60 °C, accompanied by larger standard deviations. The F statistic (2.59) is lower than the critical F value (5.14), indicating no statistically significant difference; however, from a technical viewpoint, drying at 40 °C provides the best compromise between coating thickness and consistency to maintain protective and aesthetic performance.
Penerapan Modul Ajar Berbasis iSpring Suite untuk Meningkatkan Kemandirian Belajar dan Daya Pikir Kritis Siswa pada PMKR Aditya Pratama; Ahmad Arif; Toto Sugiarto; Iffarial Nanda
JTPVI: Jurnal Teknologi dan Pendidikan Vokasi Indonesia Vol. 4 No. 2 (2026): 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.v4i2.412

Abstract

Penelitian ini dilatarbelakangi oleh rendahnya hasil belajar siswa pada mata pelajaran Perawatan Mesin Kendaraan Ringan (PMKR) serta perlunya media pembelajaran digital yang lebih interaktif untuk mendukung kemandirian belajar dan daya pikir kritis siswa. Penelitian ini bertujuan menganalisis penggunaan modul ajar berbasis iSpring Suite terhadap peningkatan hasil belajar, kemandirian belajar, dan daya pikir kritis siswa kelas XI TKR di SMK Negeri 1 Koto XI Tarusan. Penelitian menggunakan pendekatan kuantitatif dengan desain Penelitian Tindakan Kelas (PTK) dua siklus. Subjek penelitian berjumlah 32 siswa. Data dikumpulkan melalui angket, tes pretest–posttest, dan dokumentasi. Hasil penelitian menunjukkan bahwa ketuntasan belajar meningkat dari 25,00% pada pretest siklus I menjadi 71,88% pada posttest siklus I, lalu meningkat menjadi 84,38% pada posttest siklus II. Nilai praktikalitas modul mencapai 76,03% dengan kategori praktis. Temuan ini menunjukkan bahwa modul ajar berbasis iSpring Suite layak digunakan untuk mendukung pembelajaran PMKR yang lebih interaktif dan berpusat pada siswa. This study was motivated by the low learning outcomes of students in Light Vehicle Engine Maintenance (PMKR) and the need for more interactive digital learning media to support students’ self-directed learning and critical thinking. This study aimed to analyze the use of an iSpring Suite-based teaching module in improving learning outcomes, self-directed learning, and critical thinking of Grade XI TKR students at SMK Negeri 1 Koto XI Tarusan. The study employed a quantitative approach using a two-cycle Classroom Action Research design. The subjects consisted of 32 students. Data were collected through questionnaires, pretest–posttest tests, and documentation. The results showed that learning mastery increased from 25.00% in the pretest of cycle I to 71.88% in the posttest of cycle I, and further increased to 84.38% in the posttest of cycle II. The module practicality score reached 76.03%, categorized as practical. These findings indicate that the iSpring Suite-based teaching module is feasible for supporting more interactive and student-centered PMKR instruction.
Rancang Bangun Sistem Kelistrikan Penerangan dan Sein serta Klakson pada Kendaraan Listrik Hasil Konversi Mutia Ariska Putri; Dwi Sudarno Putra; Nuzul Hidayat; Ahmad Arif; Nurindah Dwiyani
MSI Transaction on Education Vol 6 No 3 (2025): MSI Transaction on Education
Publisher : Minangkabau Scholar Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46574/mted.v6i3.184

Abstract

Konversi sepeda motor berbahan bakar fosil menjadi kendaraan listrik mendukung pengurangan emisi karbon dan efisiensi energi. Namun, hasil konversi di Departemen Teknik Otomotif UNP memiliki keterbatasan pada sistem kelistrikan penerangan, lampu sein, dan klakson. Penelitian ini merancang sistem kelistrikan tersebut sesuai standar keselamatan dan efisiensi energi. Metode penelitian menggunakan Research and Development dengan model ADDIE (analisis, perancangan, pengembangan, implementasi, dan evaluasi). Rangkaian kelistrikan menggunakan baterai 48 V yang diturunkan menjadi 13 V melalui DC-DC converter sesuai kebutuhan komponen. Hasil uji menunjukkan sistem penerangan, sein, dan klakson berfungsi optimal dengan konsumsi daya 8,11 W, jauh di bawah spesifikasi maksimal 47,39 W. Sistem dilengkapi fuse 5 A untuk melindungi komponen dari arus berlebih. Sistem kelistrikan terbukti efisien, aman, dan siap digunakan pada kendaraan listrik hasil konversi.
Co-Authors Aditya Pratama Agus Baharudin Ahmad Juanda Al-Thoriq Viroza Alamsah Alfiza Candra Alhimni Rusydi Ambiyar, Ambiyar Ari Aryadi Arwizet Arwizet, Arwizet Azizul Amri Bahrul Amin Budi Utomo Wisesa Budi Waluyo Dani Harmanto Deded Purnama Dedi Mulyono Dedi Setiawan Diswanto Diswanto Doni Saputra Donny Fernandez Dori Yuvenda Dwi Sudarno Putra Erzeddin Alwi Fauzan Zaharbaini Fawwaz Naufal Fazrin Hidayat Firoj Mulani Giyano Lesmana Hamid Nasrullah Handini Novita Sari Hansi Effendi Hasan Maksum Hendra Dani Saputra I Gusti Bagus Wiksuana Ichsan Nasution Ilham Akbar Maulana Ilham Febriansyah Ilham Putra Chaniago Inna Kholidasari Intan Burtian Irma Yulia Basri Jerry Chih Tsong Su Jheri Hermanto Jodhi Ananda Prima Joumil Aidil Saifuddin Kathleen Ebora Padrigalan Krismadinata Krismadinata kustanrika, irma wirantina Lasyatta Syaifullah M Giatman M Nasir M. Abdi Rizal M. Sadly Firmansyah M. Yasep Setiawan M. Yasep Setiawan M.Riki Rinaldi M.Yasep Setiawan Martias Martias Masykur Masykur Milana Milana Muhammad Al Adaby Muhammad Febriyana Ilham Pratama Muhammad Latifur Rochman Muhammad Nasir Muhammad Yanda Muhammad Yasep Setiawan Mukhlidi Muskhir Muslim Muslim Mutia Ariska Putri Nanda, Iffarial Naufal Alifka Nizwardi Jalinus Nizwardi Zalinus Nurhasan Syah Nurindah Dwiyani Nurindah Dwiyani Nuzul Hidayat, Nuzul Osvaldo Adven Kurniawan Pinto Pratama Afosma Purwanto, Wawan Putra, Randi Purnama R Candra R. Chandra R. Chandra Refdinal, Refdinal Remon Lapisa Rifdarmon, Rifdarmon Riko Saputra Rino Kurniawan Riwayatul Ismi Rizki Alfarizi Rusdiman Salsabila Tri Rahmi Simatupang, Wakhinuddin Syalsa Billa Ahmad Toto Sugiarto Toto Sugiarto Toto Sugiarto Tung-Kwan Liu Wagino Wagino Wagino Wagino Wagino Wahyu Danang Veby Yansyah Wahyudi Pratama Wakhinuddin S Wanda Afnison Wanda Afnison Wendika Okvianda Whustha Khairul Yanda Septian Putra Yanto, Doni Tri Putra Yolana Nursyafti Yuke Permata Lisna Yuvani Oksarianti Zifa Oktavianza Zikri Fauzi