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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 JOURNAL OF SCIENCE AND SOCIAL RESEARCH Abdi: Jurnal Pengabdian dan Pemberdayaan Masyarakat Didaktik : Jurnal Ilmiah PGSD STKIP Subang Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat Vocational : Jurnal Inovasi Pendidikan Kejuruan Automotive Experiences Jurnal Vokasi Mekanika 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 Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Public Health Social Sciences Transportation Other

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Pengaruh Variasi Arus terhadap Kekuatan Bending pada Pengelasan Plat A36 Menggunakan Las SMAW (Shielded Metal Arc Welding) Chandra, Shandika; Waskito, Waskito; Jasman, Jasman; Putra, Randi Purnama
MASALIQ Vol 3 No 6 (2023): NOVEMBER
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/masaliq.v3i6.2078

Abstract

The use of A36 plate in the construction sector is closely related to connecting or welding between metals because it is useful in assembling a product to lighten human work. Examples of the use of A36 plate in the construction sector can be seen in trellis workshops, where this plate is often used as a support or support in making a balcony or canopy. However, sometimes workers do not understand how strong the plate is after being treated with welding, often they just guess at the durability of the plate, so this can cause various kinds of losses. Starting from damage to work objects to causing work accidents that result in loss of life. Therefore, this research examines the effect of variations in current strength on bending strength. This test was carried out on A36 plate material which was subjected to welding effects with varying currents of 80A, 100A, 120A and 140A. and a bending test was carried out using the ASTM E190-14 test standard, the results of this test were that at a current of 80A the bending strength value was 161.173 N/〖mm〗^2. Current 100A with a value of 229.851 N/〖mm〗^2. Current 120A with a value of 270.374 N/〖mm〗^2. And a current of 140A with a value of 374.839 N/〖mm〗^2. The test object with a current strength of 140A is the test object that has the highest bending strength value.
Pengaruh Model Pembelajaran Team Based Project terhadap Hasil Belajar Siswa pada Mata Pelajaran Gambar Teknik Manufaktur Wira, Aski; Syahri, Budi; Adri, Junil; Putra, Randi Purnama
Jurnal Vokasi Mekanika (VoMek) Vol 7 No 1 (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.v7i1.822

Abstract

Most of the teaching and learning of Manufacturing Engineering Drawing is still teacher-centered. Learning with the conventional model previously used made students passive and not independent in their learning. As a result, students are unable to understand the basic concepts of CAD drawings, interpret drawings, and understand the function of tools found in AutoCAD tools. This makes student learning achievements far from the minimum graduation criteria set by SMKN 5 Padang. The use of the Team Based Project learning model in this research aims to see its effect on student learning outcomes. Cluster random sampling is a sampling technique. To collect data, a pretest was carried out before the two groups were given different treatments. After the treatment, a post-test and assessment of student performance was carried out. The results of the analysis show that there are significant differences in learning outcomes. The test results showed an average in the cognitive domain of 88.7 for the experimental class and 82.58 for the control class, in the psychomotor domain 81.76 for the experimental class and 74.11 for the control class. Then the sign value from the T-test and F-test results is <0.05. Therefore, it can be concluded that the use of the Team Based Project learning model has a significant influence on student learning outcomes in Manufacturing Engineering Drawing.
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 Rugi-Rugi Pipa pada Distribusi Udara Bertekanan Tinggi Sistem Kompresor Semen PT. XYZ di Kota Padang Akbar, Arifki; Kurniawan, Andre; Fernanda, Yolli; Putra, Randi Purnama
Jurnal Pendidikan Tambusai Vol. 9 No. 2 (2025): Agustus
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jptam.v9i2.30888

Abstract

Penelitian ini menyelidiki kerugian tekanan dalam sistem distribusi udara bertekanan dari kompresor RKC V dan CF Silo Indarung V di PT Semen Padang serta dampaknya terhadap konsumsi energi. Kerugian tekanan terjadi dalam dua bentuk: kerugian mayor akibat gesekan sepanjang pipa, dan kerugian minor akibat sambungan seperti siku, tee, dan katup. Pendekatan kuantitatif digunakan untuk mengukur laju aliran, tekanan, suhu, dan karakteristik pipa. Pengumpulan data dilakukan melalui observasi lapangan, pengukuran langsung, dan wawancara dengan operator. Persamaan Darcy-Weisbach diterapkan untuk menganalisis penurunan tekanan, sementara kerugian biaya dihitung menggunakan rumus konsumsi energi. Hasil menunjukkan bahwa jalur Instrument Air mengalami kerugian tekanan yang jauh lebih tinggi (18,23 bar) dibandingkan jalur Plant Air (1,91 bar), terutama disebabkan oleh diameter pipa yang lebih kecil dan kecepatan aliran yang lebih tinggi. Total kerugian energi tersebut dikonversi menjadi biaya mingguan sekitar Rp 3,33 juta. Temuan ini menunjukkan adanya ketidakefisienan dalam sistem perpipaan saat ini, menekankan perlunya perancangan ulang dan optimalisasi sistem untuk mengurangi konsumsi energi dan biaya operasional dalam sistem kompresor industri semen.
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.
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.
Aplikasi Mesin Pencuci Ubi Model Rotary untuk Peningkatan Nilai Jual Ubi Jalar di Koto Tinggi Kabupaten Agam Randi Purnama Putra; Arif Juliari Kusnanda; Yogi Dian Alfana
ABDI: Jurnal Pengabdian dan Pemberdayaan Masyarakat Vol 7 No 3 (2025): Abdi: Jurnal Pengabdian dan Pemberdayaan Masyarakat
Publisher : Labor Jurusan Sosiologi, Fakultas Ilmu Sosial, Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/abdi.v7i3.1414

Abstract

Kenagarian Koto Tinggi, Kecamatan Baso, Kabupaten Agam, dikenal sebagai daerah penghasil ubi jalar berkualitas tinggi. Namun, petani di wilayah ini menghadapi tantangan besar akibat proses pencucian ubi jalar yang masih dilakukan secara manual. Metode ini menghabiskan banyak waktu dan tenaga serta kurang efisien, yang berpotensi menurunkan nilai jual produk. Dalam upaya mengatasi masalah ini, pengabdian masyarakat bertujuan untuk meningkatkan efisiensi dan kualitas pencucian ubi jalar melalui penerapan teknologi mesin pencuci. Hasil dari pengabdian ini adalah tercipta sebuah mesin pencuci ubi jalar dengan kapasitas 300 kg/jam. Dengan menggunakan mesin pencuci ubi model rotary ini, mitra dapat meningkatkan produktivitasnya dan mengurangi beban kerja fisik. Mesin ini bekerja dengan prinsip putaran drum yang dilengkapi sikat pembersih, memungkinkan ubi bersentuhan dengan alat pembersih saat berputar, sehingga kotoran dan tanah dapat dihilangkan secara efektif. Setelah serah terima mesin dan pelatihan penggunaan kepada mitra pada 8 September 2024, hasilnya mulai terlihat. Dengan penerapan teknologi ini, nilai jual ubi jalar mengalami peningkatan dari Rp 4.500/kg menjadi Rp 5.500/kg. Keberhasilan ini tidak hanya meningkatkan pendapatan petani tetapi juga membuka peluang untuk diversifikasi produk, menjadikan kegiatan ini bermanfaat bagi masyarakat di Nagari Koto Tinggi.
Perancangan Mesin Pengolahan Air Tanah Menjadi Air Bersih di Nagari Koto Tinggi Kabupaten Agam Randi Purnama Putra; Fadhilah Fadhilah; Romy Dwipa Yamesa Away
ABDI: Jurnal Pengabdian dan Pemberdayaan Masyarakat Vol 7 No 3 (2025): Abdi: Jurnal Pengabdian dan Pemberdayaan Masyarakat
Publisher : Labor Jurusan Sosiologi, Fakultas Ilmu Sosial, Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/abdi.v7i3.1415

Abstract

Pengabdian masyarakat ini bertujuan merancang dan membuat mesin pengolahan air tanah menjadi air bersih yang layak pakai di Nagari Koto Tinggi, Kecamatan Baso, Kabupaten Agam. Berdasarkan observasi, masyarakat setempat bergantung pada air tanah yang tidak layak pakai. Tim merancang mesin pengolahan air dengan kapasitas 120 liter per 10 menit, menggunakan sistem filtrasi yang melibatkan media seperti mangan, pasir silika dan karbon aktif untuk memastikan kualitas air yang aman serta layak pakai. Proses perancangan melibatkan partisipasi masyarakat, yang tidak hanya meningkatkan rasa kepemilikan, tetapi juga memberikan pemahaman tentang teknologi pengolahan air. Setelah pembuatan mesin selesai, dilakukan uji coba dan sosialisasi kepada masyarakat, serta serah terima mesin kepada mitra untuk pengelolaan lebih lanjut. Proyek ini memberikan dampak positif, meningkatkan akses masyarakat terhadap air bersih dan kesadaran akan pentingnya kualitas air untuk kehidupan sehari-hari.
Co-Authors A, Yufrizal Ahmad Arif Ahmad Arif Akbar, Arifki Aldo Alfattah Sudjono Andre Kurniawan Andre Kurniawan Andrizal Andrizal Anna Niska Fauza Aprinaldi Aprinaldi Arafat, Andril Ariansyah Ariansyah Arif Juliari Kusnanda Asadellah, Dimas Pandhu Asnil Asnil Aswanto, Trio Harinaldi Aziz, Wildan Abdul Badri Kurniawan Bahrul Amin Bambang Sudarmanta Budi Syahri Bulkia Rahim Chandra, Shandika Dani Harmanto Dani Harmanto Dori Yuvenda Eko Indrawan Erzeddin Alwi Fadhilah Fadhilah Fadhilah Ikhsan Dinul Fajar Surya Farhan Rahmat Putra Fauza, Anna Niska Febri Prasetya Febrianti, Roza Fitrah Qalbina Ghozali, Rahmatul Jamaludin Jamaludin Jasman Jasman Junil Adri Krismadinata Krismadinata M. Yasep Setiawan Martias Martias Martias Martias Milana Milana Mirta Widia Muhammad Aulia Muhammad Thoriqul Hadysyah Muhibbudin Muhibbudin Muji Setiyo Muldi Yuhendri Nadry Heroza Nelvi Erizon Nurdin Hendri Oki Muraza Phonepasith Phongdala Phongdala, Phonepasith Purwantono Purwantono Purwantono, Purwantono Rahadian Zainul Refdinal, Refdinal Remon Lapisa Revaldo Nur Hidayat Rezki Alhakim Rifelino Rifelino Romy Dwipa Yamesa Away Roza Febrianti Sri Rizki Putri Primandari Tin, Chau Trung Toto Sugiarto Tun, Hla Myo Vernando, Willy Hardi Vickram Reski Andri Wagino Wagino Wanda Afnison Wanda Afnison Waskito Waskito, Waskito Widia, Mirta Willy Hardi Vernando Wira, Aski Wulansari, Rizky Ema Ya, Kyaw Zay Yoga Volanda Saputra Yogi Dian Alfana Yolli Fernanda Yufrizal Yufrizal Zainal Abadi