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All Journal Jurnal Pendidikan Teknologi dan Kejuruan INVOTEK: Jurnal Inovasi Vokasional dan Teknologi JPP IPTEK (Jurnal Pengabdian dan Penerapan IPTEK) JURNAL PENDIDIKAN TAMBUSAI Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat Automotive Experiences Jurnal Vokasi Mekanika ALSYS : Jurnal Keislaman dan Ilmu Pendidikan MASALIQ: Jurnal Pendidikan dan Sains Al-DYAS : Jurnal Inovasi dan Pengabdian kepada Masyarakat Journal of Engineering Researcher and Lecturer Asian Journal of Science, Technology, Engineering, and Art
Putra, Randi Purnama
Universitas Negeri Padang
Religion Aerospace Engineering Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation Other

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Utilizing Augmented Reality Media to Enhance Students’ Lathe Learning Outcomes Ariansyah, Ariansyah; Prasetya, Febri; Purwantono, Purwantono; Putra, Randi Purnama
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.v7i3.889

Abstract

The integration of technology in vocational education has become a critical need to support 21st-century skills, especially in practice-based learning such as Basic Mechanical Engineering subjects. One promising innovation is the use of Augmented Reality (AR) media, which enables interactive three-dimensional visualization to help students concretely understand abstract concepts. This study aims to examine the effectiveness of lathe-based AR media in improving student learning outcomes and motivation in Grade X of the Machining Engineering Department at SMK Semen Padang. The research employed a quasi-experimental method using a non-equivalent control group design. The subjects consisted of two classes: the experimental class (using AR media) and the control class (using conventional learning methods). Data were collected using pre-tests and post-tests to assess learning outcomes and Likert-scale questionnaires to evaluate learning motivation. The analysis results showed that the use of AR media significantly increased student learning outcomes and motivation compared to traditional methods. Based on hypothesis testing and normalized gain score analysis, the AR media was found to be highly effective in the learning process. In conclusion, lathe-based Augmented Reality media proved to be an effective interactive learning tool that enhances students' academic performance and motivation, while also contributing to the development of innovative media in technical education.
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.
Pelatihan Perawatan Berkala Hand Tractor Bagi Kelompok Tani di Kelurahan Koto Panjang Ikua Koto Martias, Martias; Yuvenda, Dori; Putra, Randi Purnama; Arif, Ahmad
Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat Vol 22, No 1 (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.02210

Abstract

Dalam perkembangan teknologi pertanian juga mengalami proses moderenisasi pada alat pertanian seperti penggunaan hand tracktor. Kondisi ini ternyata menimbulkan kendala bagi petani dalam perawatan mesin tersebut. Latar belakang pendidikan para petani tergolong rendah dan tidak memiliki pengetahuan dasar tentang mesin akibatnya terjadi kerusakan-kerusakan yang fatal pada mesin. Disisi lain dengan adanya kerusakan maka petani akan mengalami peningkatan biaya operasional dan memperlambat waktu penyelesaian pekerjaan. Tujuan dari kegiatan ini adalah membekali pengetahuan kelompok tani terkait dengan peralatan hand tractor sehingga dapat melakukan perawatan secara mandiri dan benar sesuai dengan prosedur pabrik. Pengabdian kepada masyarakat ini dilakukan di kelurahan Koto panjang Ikua Koto Kecamatan Koto Tangah Kota Padang dengan peserta terdiri dari kelompok tani. Metode pendekatan yang digunakan ada dua yaitu dengan metode classroom dan practice. Dimana kegiatan ini diawali dengan tahap persiapan, pelaksanaan, monitoring, evaluasi, dan pembimbingan. Setelah dilaksanakan rangkaian kegiatan pengabdian kepada masyarakat pada kelompok tani, maka ditemukan peningkatan pengetahuan dan keterampilan kelompok tani melakukan perawatan berkala hand tractor sehingga dapat menghindari kerusakan pada hand tractor dan mengurangi ketergantungan pada jasa servis hand tractor. Hal ini diketahui dari hasil evaluasi yang dilakukan sebelum dan setelah pelatihan.
Program Pelatihan Sistem Electronic Fuel Injection (EFI) Bagi Siswa SMK N 2 Payakumbuh Putra, Randi Purnama; Wagino, Wagino; Amin, Bahrul; Afnison, Wanda
Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat Vol 21, No 3 (2021): 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.01610

Abstract

One of the mandatory criteria for SMK graduates is to have a competency renewal value. Competence values that lack novelty will be unable to compete in the current era of rapid technological development. The school has a big role in designing learning that has new value. To achieve this, the school must move quickly to present collaborative programs, training with other agencies that do have professionalism in their fields.The problems experienced by Vocational High Schools above are one of the responsibilities of lecturers as educators, wherefrom the threefold missions of Higher Education that must be implemented there are points of community service. The lecturer profession is obliged to do community service related to the problems that arise around it. Based on the problems experienced by Vocational Schools at the initial point, our community service team from the Automotive Engineering Department through LP2M UNP tried to cooperate with schools in presenting new competencies. This activity is in the form of Electronic Fuel Injection (EFI) fuel system training for students of SMK N 2 Payakumbuh.From the evaluation results, it was found that students' understanding of the fuel injection system (EFI) material increased with an average increase in understanding of 12-18%. The author believes that if this is continued consistently, it can have an impact on improving the quality of PBM in SMK N 2 Payakumbuh.
Study of the variation of the leading edge of a railway crane on the aerodynamic characteristics Vernando, Willy Hardi; Kurniawan, Andre; Putra, Randi Purnama; Widia, Mirta
Journal of Engineering Researcher and Lecturer Vol. 3 No. 2 (2024): Regular Issue
Publisher : Researcher and Lecturer Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58712/jerel.v3i2.145

Abstract

The front body design of the railway crane is flat or bluff type. The design causes a large drag, so the railway crane requires high fuel consumption to drive. Therefore, this study aims to modify the front body of the railway crane by applying the shape of the leading edge to reduce drag. This research also investigates the effect of leading-edge angles on aerodynamic characteristics. The method used is computational fluid dynamics, using the flow simulation feature of the Solidworks research licence software. This study considered three variations of leading edge angle (40°, 45° and 50°). The simulation results show that the larger the leading edge angle, the lower the drag coefficient value. In addition, the simulation shows that there is a high air pressure at the front of the railway crane with the bluff shape, while the modified railway crane with the leading edge applied has a lower air pressure at the front. Furthermore, the results and discussion in this article present the simulation results showing the velocity streamline and pressure contour of each model.
RANCANG BANGUN PEMBANGKIT LISTRIK BERSKALA KECIL MODEL TURBIN VORTEX SEBAGAI APLIKASI TEKNOLOGI TEPAT GUNA DI NAGARI KURANJI HULU Purwantono, Purwantono; Yuvenda, Dori; Putra, Randi Purnama; Muhibbudin, Muhibbudin; Yuhendri, Muldi
Jurnal Vokasi Mekanika (VoMek) Vol 6 No 1 (2024): 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.v6i1.649

Abstract

Pembangkit listrik berskala kecil masih banyak dibutuhkan dikalangan masyarakat, khususnya di daerah tertinggal yang tidak terjangkau aliran Listrik PLN. Kawasan hutan lindung merupakan sumber potensi air yang muaranya adalah aliran sungai-sungai baik kecil maupun besar. Nagari Kuranji Hulu memiliki sumber air sebagai energi kinetic yang dapat dikonversi menjadi energi listrik atau tenaga pikohidro, Masyarakat di sekitarnya hanya memanfaatkan sebagai irigasi untuk persawahan. Teknologi Tepat Guna sebagai alternatif yang dapat membuka wawasan bagi masyarakt desa. Aplikasi Teknologi Tepat Guna ini diantaranya adalah Turbin air vortex. Turbin Vortex ini mempunyai keuntungan yaitu jumlah alairan air yang dibutuhkan relatif kecil, ketinggian permukaan jatuh air juga kecil dan ini sangat sesuai dengan kondisi aliran air pada sungai kecil atau parit. Secara keseluruhan biaya pembuatan pembuatan Turbin Vortex ini menjadi lebih murah. Konstruksi Turbin Vortex dirancang dengan menggunakan komponen komponen yang relatif kecil dan ringan sehingga secar keseluruhannya juga menjadi lebih murah, disamping itu dengan komponen yang kecil dan ringan ini memudahkan untuk mobilitas pemasangan Vortex. Konstruksi pembuatan Vortex ini tidak membutuhkan bendungan besar, pipa saluran panjang, dan pintu air yang besar. Penggunaan konstruksi kincir model turbin vortex ini dapat digunakan pada daerah aliran sungai yang mempunyai kecepatan aliran air antara 1–5 m/s tanpa harus diletakan pada air terjun yang tinggi. Pengujian alat ini dilakukan di Kanagarian Kuranji Hulu dengan membuat sebuah konstruksi tenaga listrik berskala kecil. Rancang bagun turbin ini dimulai dari survei awal di lapangan, analisis kapasitas turbin tenaga air, perencanaan desain turbin, proses fabrikasi dan pengujian kinerja dari turbin vortex.
MINAT MELANJUTKAN STUDI KEPERGURUAN TINGGI SISWA KELAS XII SMK NEGERI 1 SUMATERA BARAT Hadysyah, Muhammad Thoriqul; Erizon, Nelvi; Rahim, Bulkia; Putra, Randi Purnama
Jurnal Vokasi Mekanika (VoMek) Vol 6 No 2 (2024): 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.v6i2.713

Abstract

Minat untuk melanjutkan studi keperguruan tinggi pada revolusi 4.0 saat ini sangat penting untuk masuk ke dunia kerja karena di butuhkan tenaga kerja dengan pendidikan yang tinggi dan wawasan yang luas, besarnya minat disebabkan oleh faktor yang menjadi pendukungnya. Telah dilakukan penelitian minat melanjutkan studi keperguruan tinggi siswa kelas XII SMK Negeri 1 Sumatera Barat. Tujuan penelitian untuk mengetahui seberapa besar minat dan seberapa besar penyebab minat siswa kelas XII SMK Negeri 1 Sumatera Barat untuk masuk perguruan tinggi yang disebabkan oleh faktor internal dan eksternal. Metode penelitian deskriptif kuantitatif dengan tujuan memaparkan fenomena yang sedang terjadi saat ini yang akan diteliti, teknik pengambilan sampel Proportionate Stratified Random Sampling, teknik analisis data mengunakan analisis deskriptif kemudian mengunakan analisis induktif atau inferensial digunakan dalam angket tertutup dengan skala likert. Hasil penelitian populasi 406, sampel 201 siswa dengan 32 pernyataan skor 1-5. Diketahui besar minat melanjutkan studi keperguruan tinggi siswa kelas XII SMK Negeri 1 Sumatera Barat presentase 43,28% kategori tinggi : kategori Sangat Tinggi 86 siswa, kategori Tinggi 87 siswa, kategori Sedang 21 siswa, kategori Rendah 6 siswa, kategori Sangat Rendah 1 siswa. Besar penyebab minat melanjutkan studi keperguruan tinggi siswa kelas XII SMK Negeri 1 Sumatera Barat disebabkan oleh motivasi siswa presentase 51,24% kategori sanggat tinggi, cita-cita siswa presentase 41,79% kategori tinggi, kemauan siswa presentase 45,27% kategori sangat tinggi, lingkungan sekolah siswa presentase 56,72% kategori rendah, lingkungan keluarga siswa presentase 48,26% kategori sangat tinggi.
Project-based learning module on creativity and entrepreneurship product subjects: Validity and empirical effect Aziz, Wildan Abdul; Wulansari, Rizky Ema; Putra, Randi Purnama; Tun, Hla Myo; Tin, Chau Trung; Ya, Kyaw Zay
Jurnal Pendidikan Teknologi Kejuruan Vol 6 No 3 (2023): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jptk.v6i3.34323

Abstract

The learning process of Creativity and Entrepreneurship Product subjects in Vocational High Schools still uses printed books, resulting the students’ boredom in learning the materials. Apart from that, the learning method used is the lecture method which is certainly less effective in supporting students' understanding on the materials so that learning is more teacher-centered. Meanwhile, the demand for the Emancipated Curriculum is that learning must be student-centered. This study aimed to develop learning tools for PjBL-based teaching module on the Creativity and Entrepreneurship Product subjects. This research was a research and development using the ADDIE development model. There were 12 experts who validated this module from 3 aspects, including material, media and model, and language aspects, and 30 students as participants for pilot study. The results of this research showed that this module is valid and has positive effects in supporting the learning process for the Creativity and Entrepreneurship Product subjects. This study brings pedagogical implications for the effectiveness of Creativity and Entrepreneurship Product subjects and is a method that can be implemented by teachers in the subject learning.
Implementation of project-based learning for improve students' critical thinking skills in creative product and entrepreneurship subjects Febrianti, Roza; A, Yufrizal; Putra, Randi Purnama; Phongdala, Phonepasith
Jurnal Pendidikan Teknologi Kejuruan Vol 6 No 4 (2023): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jptk.v6i4.34523

Abstract

The implementation of monotonous learning that lacks active student participation can contribute to the low critical thinking skills of students. This research aims to enhance students' critical thinking skills through the application of project-based learning (PjBL). The study evaluates the extent to which students' critical thinking skills can be improved through the implementation of PjBL. The research employs a Quasi-Experimental method. The study subjects consist of two groups: the experimental group, which utilizes the PjBL, and the control group, which follows a conventional model. Overall, after conducting prerequisite tests and hypothesis testing, a significant difference in critical thinking scores is observed between the experimental and control groups. Students are provided with the opportunity to exercise their critical thinking skills during the execution of project tasks. Consequently, it can be concluded that the PjBL model positively impacts the essential thinking abilities of 11th-grade machanical engineering students in creative products and entrepreneurship subject.
Analisis Penambahan Turbin Magnus pada Kapal Tanker 1700 DWT Menggunakan Simulasi Computational Fluid Dynamics Surya, Fajar; Putra, Randi Purnama; Fernanda, Yolli; Qalbina, Fitrah
Jurnal Vokasi Mekanika (VoMek) Vol 7 No 4 (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.v7i4.901

Abstract

Turbin magnus merupakan turbin yang berfungsi sebagai sistem propulsi tambahan pada kapal dengan tujuan meningkatkan efisiensi energi dan mengurangi emisi gas buang. Tujuan penelitian ini adalah untuk menganalisis perbandingan performa turbin magnus tipe flettner rotor dan thom rotor terhadap koefisien lift (Cℓ), koefisien drag (Cd), gaya thrust (Fr), serta hambatan total baru kapal (RT New). Metode penelitian menggunakan simulasi berbasis Computational Fluid Dynamics (CFD) dengan menggunakan software Ansys Fluent 2025 R1 Student Version. Hasil penelitian menunjukkan bahwa turbin magnus tipe thom rotor memiliki nilai Cℓ lebih tinggi sebesar 0,3364; 0,3276; 0,3157 pada kecepatan 5 m/s, 10 m/s, dan 15 m/s dibandingkan flettner rotor sebesar 0,2785; 0,2508; 0,2442 pada kecepatan 5 m/s, 10 m/s, dan 15 m/s dengan penurunan nilai lebih stabil pada variasi kecepatan angin. Sedangkan nilai Cd thom rotor sebesar 0,6487; 0,5333; 0,4959 pada kecepatan 5 m/s, 10 m/s, dan 15 m/s juga lebih besar dibandingkan flettner rotor sebesar 0,5705; 0,4537; 0,4229 pada kecepatan 5 m/s, 10 m/s, dan 15 m/s. Perhitungan gaya thrust (Fr) menunjukkan peningkatan signifikan pada kedua tipe rotor seiring kenaikan kecepatan aliran, dengan kontribusi terbesar pada thom rotor. Hambatan total baru kapal (RT New) menurun secara relatif terhadap kondisi awal, menandakan adanya efisiensi propulsi tambahan. Maka penambahan turbin magnus mampu memberikan gaya dorong tambahan, mengurangi hambatan total, serta meningkatkan efisiensi operasional kapal. Thom rotor menghasilkan gaya angkat yang lebih stabil, sementara flettner rotor lebih efisien dalam menekan hambatan, sehingga pemilihan tipe rotor dapat disesuaikan dengan kebutuhan operasional kapal.
Co-Authors A, Yufrizal Ahmad Arif Ahmad Arif Akbar, Arifki Ananda, Yoga Rizki Andre Kurniawan Andre Kurniawan Andrizal Andrizal Aprinaldi, Aprinaldi Arafat, Andril Ariansyah Ariansyah, Ariansyah Asnil Asnil Aswanto, Trio Harinaldi Aziz, Wildan Abdul Bahrul Amin Bambang Sudarmanta Budi Syahri Bulkia Rahim Chandra, Shandika Dinul, Fadhilah Ikhsan Dori Yuvenda Erizon, Nelvi Erzeddin Alwi Fauza, Anna Niska Febri Prasetya Febrianti, Roza Fitrah Qalbina Ghozali, Rahmatul Hadysyah, Muhammad Thoriqul Harmanto, Dani Jamaludin Jamaludin Jasman Jasman Junil Adri Krismadinata Krismadinata Kurniawan, Badri M. Yasep Setiawan Martias Martias Martias Martias Milana Milana Muhibbudin, Muhibbudin Muji Setiyo Muldi Yuhendri Nurdin Hendri Oki Muraza Phonepasith Phongdala Phongdala, Phonepasith Purwantono Purwantono Purwantono, Purwantono Rahadian Zainul Rahmat, Febri Refdinal, Refdinal Remon Lapisa Roza Febrianti Sri Rizki Putri Primandari Surya, Fajar Tin, Chau Trung Toto Sugiarto Tun, Hla Myo Vernando, Willy Hardi Wagino Wagino Wagino Wanda Afnison Waskito Waskito, Waskito Widia, Mirta Wira, Aski Wulansari, Rizky Ema Ya, Kyaw Zay Yolli Fernanda Yufrizal Yufrizal Zainal Abadi