Article Per Year (5 Year)
p-Index From 2021 - 2026
3.623
P-Index
This Author published in this journals
All Journal Jurnal Pendidikan Teknologi dan Kejuruan SPEKTRUM: Jurnal Pendidikan Luar Sekolah (PLS) JURNAL PENDIDIKAN TAMBUSAI Community Engagement and Emergence Journal (CEEJ) MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat Teknomekanik Journal of Community Service Tsaqofah: Jurnal Penelitian Guru Indonesia MASALIQ: Jurnal Pendidikan dan Sains Al-DYAS : Jurnal Inovasi dan Pengabdian kepada Masyarakat
Irzal, Irzal
Unknown Affiliation
Religion Humanities Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences Other

Published : 28 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 28 Documents
Search

 1   2   3 
Studi Eksperimental Kekerasan Dan Tarik Pada Produk Handle Rem Berbahan Limbah Aluminium Hasil Sand Casting Ramadhan, Qadri; Abadi, Zainal; Niska Fauza, Anna; Irzal, Irzal
Jurnal Pendidikan Tambusai Vol. 8 No. 3 (2024)
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Penelitian ini bertujuan mengevaluasi potensi limbah aluminium sebagai bahan baku pembuatan produk handle rem sepeda motor melalui metode sand casting. Penelitian dilakukan dengan pendekatan eksperimental, menganalisis sifat mekanik, termasuk kekerasan dan kekuatan tarik produk. Limbah aluminium dari kampas rem dan kaleng minuman didaur ulang, diuji menggunakan alat uji Rockwell untuk kekerasan dan Universal Tensile Machine untuk kekuatan tarik. Hasil menunjukkan bahwa produk handle rem dari limbah aluminium memiliki nilai rata-rata kekerasan 34,6 HRA, lebih tinggi dibandingkan standar variasi sebesar 21,65 HRA. Nilai kekuatan tarik produk hasil casting mencapai rata-rata 7,66 MPa, mengungguli produk standar dengan rata-rata 6,44 MPa. Penelitian ini menunjukkan bahwa pemanfaatan limbah aluminium dapat menghasilkan produk berkualitas tinggi sekaligus mengurangi dampak lingkungan. Implikasi penelitian mencakup potensi inovasi bahan daur ulang dalam industri otomotif.  
Implementasi Sistem Manajemen Keselamatan Dan Kesehatan Kerja di Jurusan Teknik Permesinan SMK Negeri 5 Padang Kelvin Permana Saputra, Dwi; Irzal, Irzal; Yuvenda, Dori; Qalbina, Fitrah
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.v9i1.26384

Abstract

Penelitian ini dilatarbelakangi oleh rendahnya pemahaman, kesadaran, dan kepedulian siswa SMK Negeri 5 Padang terhadap bahaya kerja saat praktik, khususnya dalam mematuhi aturan Sistem Manajemen Keselamatan dan Kesehatan Kerja (SMK3). Tujuan dari penelitian ini adalah untuk memperoleh gambaran mengenai pelaksanaan SMK3 di Jurusan Teknik Permesinan SMK Negeri 5 Padang, sehingga dapat meningkatkan kepatuhan siswa terhadap prosedur keselamatan kerja. Penelitian ini menggunakan metode deskriptif dengan pendekatan kuantitatif. Data dikumpulkan melalui kuesioner tertutup dan dokumentasi. Responden terdiri dari siswa kelas XI dan XII Teknik Permesinan yang dipilih secara acak. Hasil penelitian menunjukkan bahwa pelaksanaan SMK3 dalam indikator perencanaan memperoleh kategori “sesuai” dengan rata-rata skor 25,6 dari skor maksimal 36. Pada indikator penerapan, hasilnya masuk dalam kategori “kurang sesuai” dengan rata-rata skor 42,09 dari skor maksimal 68. Sedangkan pada indikator evaluasi, hasilnya juga termasuk “kurang sesuai” dengan rata-rata skor 10,3 dari skor maksimal 16. Berdasarkan temuan ini, dapat disimpulkan bahwa penerapan dan evaluasi SMK3 di jurusan tersebut masih memerlukan peningkatan, terutama dalam hal implementasi nyata di lingkungan praktik siswa.
The effectiveness of the case method to improve student learning outcomes in the SMAW subject Fajrin, M; Purwantono, Purwantono; Irzal, Irzal; Rahim, Bulkia; Zaus, Anggi Agni
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.v6i4.34723

Abstract

This study aims to assess the effectiveness of the case method for improving student learning outcomes in the SMAW (Shielded Metal Arc Welding) subject. This research employs classroom action research. The subjects of this study are 11th-grade students majoring in Mechanical Engineering at State Vocational High School 1 Silaut, West Sumatra, Indonesia. Data collection techniques include observation sheets to assess teacher and student activities, tests to evaluate students’ knowledge, and documentation to support the research. The study results indicate that implementing the case method teaching model effectively improves student learning outcomes because students are engaged and interested in learning. This is evident in the learning outcomes in cycle 1, where 64.29% of students achieved passing grades, with nine passing, while 35.71% did not pass, with five students falling short. In cycle 2, student learning outcomes improved to 78.57%, with 11 students passing, while 21.43% did not pass, with three students not meeting the passing criteria. In conclusion, the case method teaching model effectively enhances student learning outcomes in the SMAW subject.
From passive to critical consumption: The role of educational content in short videos to improve students' critical thinking skills Aspar, Fathir; Refdinal, Refdinal; Erizon, Nelvi; Jasman, Jasman; Irzal, Irzal; A, Yufrizal
Jurnal Pendidikan Teknologi Kejuruan Vol 8 No 1 (2025): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jptk.v8i1.42323

Abstract

The engaging and personalized nature from short video makes it quickly popular, yet concerns persist about their potential to diminish critical thinking skills. This study investigates whether short videos with educational content can improve students' critical thinking skills. Using a quasi-experiment method, Thirty-three participants were divided into control and experimental groups, with critical thinking measured using the Holistic Critical Thinking Scoring Rubric (HCTSR) based on essay analysis in pretest and posttest. After administering educational short videos to the experimental group, the results showed that there was an increase in students' critical thinking skills, shown by the result of controlling the pretest variable through the ANCOVA test with a p-value of <0.001. The result highlights the potential of educational short videos as tools for fostering critical thinking by providing interventions which prioritize treatment fidelity through standardized protocols (SOPs) for content delivery, validating assessment tools, and structuring content design. Recommendations for future research include larger sample sizes, repeated data collection at strategic intervals, and rigorous validation of question complexity.
Optimizing vertical-axis wind turbine designs: A comparative CFD analysis of savonius, darrieus, and savonius-darrieus configurations Erizon, Nelvi; Refdinal, Refdinal; Jasman, Jasman; Irzal, Irzal; A, Yufrizal; Fahrezi, Muhammad Shadiq; Fernanda, Firza; Fadillah, Egi; Pepito, Ma Leona Maye B.
Teknomekanik Vol. 8 No. 2 (2025): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/teknomekanik.v8i2.33172

Abstract

This study aims to evaluate the performance of vertical-axis wind turbines (VAWTs) with three different configurations, including Savonius, Darrieus, and a Savonius-Darrieus hybrid wind turbine, using Computational Fluid Dynamics (CFD) simulations. The methodology involves 3D geometry modeling, simulation parameter setup, meshing, and post-simulation analysis using SolidWorks 2022 software. The simulation results indicate that the Savonius turbine achieves the highest power coefficient (Cp) and torque coefficient (Ct) among the three designs, with a maximum Cp value of 0.5 at a Tip-Speed Ratio (TSR) of 0.4. Conversely, the hybrid turbine demonstrates lower efficiency, although it theoretically offers potential for improving performance at low wind speeds. Pressure and flow velocity distributions reveal that the Savonius turbine maintains the most stable pressure pattern compared to the other configurations. These findings highlight the potential of the Savonius turbine as a small-scale renewable energy solution, particularly in urban areas with low wind speeds. Further research is recommended to optimize hybrid turbine designs using machine learning approaches and empirical validation through field experiments to support the achievement of Sustainable Development Goals (SDGs), particularly Goal 7, affordable and clean energy.
Empowering Farming Communities through the Application of Appropriate Technology in the Rice Polishing Machine in Koto Padang Village Dharmasraya Regency Ardi, Junil; Fernandes, Erik; Irzal, Irzal; Primawati, Primawati; Dasa Putri, Lili
SPEKTRUM: Jurnal Pendidikan Luar Sekolah (PLS) Vol 14, No 1 (2026): SPEKTRUM: Jurnal Pendidikan Luar Sekolah (PLS): Publishing Februari 2026
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/spektrumpls.v14i1.137808

Abstract

This community service program aims to empower rice farmers in Koto Padang Village, Dharmasraya Regency, through the application of appropriate technology in the form of a rice polishing machine (polisher). The main problems faced by farmers were the absence of local polishing facilities and dependence on rice milling units in neighboring villages, which increased transportation costs, processing time, and reduced product quality. The implementation method used a participatory technology approach involving lecturers, students, and the Rawang Bintungan Farmers Group. The activity consisted of several stages: field survey, problem identification, machine design using SolidWorks, fabrication, testing, training, and handover. The machine, driven by a 7 HP motor, has a working capacity of 300–500 kg/hour with 90–95% milling efficiency. Results show that the machine reduced operating costs by up to 30% and increased rice yield quality and polishing efficiency compared to traditional methods. Furthermore, 90% of the trained participants were able to operate and maintain the machine independently. This program demonstrates that collaborative innovation between universities and local communities can strengthen food security and farmer independence through sustainable technology transfer.
Pengaruh Sarana Prasarana Bengkel Las dan Motivasi Belajar Praktik terhadap Hasil Belajar Siswa pada Mata Pelajaran Shielded Metal Arc Welding (SMAW) Kelas XI Teknik Pengelasan SMK Negeri 1 Sumatera Barat Manik, Yeremia Owen; Rahim, Bulkia; Irzal, Irzal; Indrawan, Eko
TSAQOFAH Vol 5 No 3 (2025): MEI
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/tsaqofah.v5i3.5956

Abstract

This study is motivated by the crucial role of practical facilities and student learning motivation in supporting learning outcomes, particularly in SMAW welding practice instruction at vocational high schools. The objective of this research is to determine the influence of welding workshop facilities and practical learning motivation on the learning outcomes of Grade XI Welding Engineering students at SMK Negeri 1 West Sumatra. The study uses a quantitative method with a correlational approach, involving 25 students as the sample. Data were collected through questionnaires, documentation, and observation, and analyzed using simple and multiple linear regression. The results show that: (1) welding workshop facilities significantly affect student learning outcomes, with a t value of 2.762 and the regression equation Y = 57.235 + 0.328X₁; (2) practical learning motivation also significantly affects learning outcomes, with a t value of 3.095 and the regression equation Y = 55.981 + 0.338X₂; (3) simultaneously, both variables have a positive and significant effect on student learning outcomes, with a coefficient of determination R² = 0.315 and the regression equation Y = 52.831 + 0.812X₁ + 1.451X₂. These findings confirm that the availability of adequate practice facilities and high practical learning motivation together can improve student learning outcomes in SMAW welding subjects. The implication is that schools need to ensure the provision of appropriate practice facilities and foster student motivation through contextual and participatory learning strategies.
Pengaruh Fasilitas Peralatan Praktik terhadap Hasil Keterampilan Pengelasan Siswa Kelas XI Jurusan Teknik Pengelasan dan Fabrikasi Logam di SMK Negeri 2 Payakumbuh. Abdilah, Zikri; Irzal, Irzal; Afnison, Wanda; Alfana, Yogi Dian
TSAQOFAH Vol 6 No 3 (2026): MEI
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/tsaqofah.v6i3.9747

Abstract

Welding is one of the essential competencies that students in the Welding and Metal Fabrication Engineering Expertise Program must possess. However, the practical learning process still faces limitations in equipment facilities, both in terms of quantity and usability, requiring students to take turns using the equipment and making practice time less effective. This condition has the potential to affect students’ welding skill outcomes. This study aims to determine the effect of practical equipment facilities on the welding skill outcomes of Grade XI students in the Welding and Metal Fabrication Engineering Department at SMK Negeri 2 Payakumbuh. This study employed a quantitative approach with a correlational method. The research population included all Grade XI students in the Welding and Metal Fabrication Engineering Department of SMK Negeri 2 Payakumbuh, totaling 55 students. The sample was determined using the total sampling technique, so the entire population was used as the research sample. Data were collected through a questionnaire to measure practical equipment facilities and an assessment rubric to measure students’ welding skills. Data analysis included prerequisite analysis tests, namely normality, linearity, and homoscedasticity tests, as well as hypothesis testing using simple linear regression, the t-test, and the coefficient of determination (R²). The results show that practical equipment facilities do not have a significant effect on students’ welding skill outcomes, with a significance value of 0.318 > 0.05. The coefficient of determination (R²) value of 0.019 indicates that practical equipment facilities can explain only 1.9% of the variation in students’ welding skill outcomes, while 98.1% is influenced by other factors outside this study. In addition, the direction of the relationship obtained is negative and not significant, with a regression coefficient value of -0.187. The conclusion of this study emphasizes that practical equipment facilities are not the main factor determining students’ welding skills; rather, other factors play a greater role, such as interest, motivation, theoretical understanding, and the learning process. The implications of this study emphasize the importance of a more comprehensive evaluation of practical learning by considering students’ internal factors and the quality of the vocational learning process.
Co-Authors A, Yufrizal Abdilah, Zikri Agustian, Ganda Aldio, Muhammad Fikhri Ambiyar, Ambiyar Andre Kurniawan Arafat, Andril Ardi, Junil Aspar, Fathir Budi Syahri Bulkia Rahim Dori Yuvenda Eko Indrawan Erizon, Nelvi Fadillah, Egi Fahrezi, Muhammad Shadiq Fajri, Husnul Fajrin, M Fauza, Anna Niska Fernanda, Firza Fernandes, Erik Fitra, Dinul Fitrah Qalbina Habibie Habibie Hardi, Fidel Apria Ismail, Havis Jasman Jasman Junil Adri Kelvin Permana Saputra, Dwi Khairul, Farid Lili Dasa Putri Manik, Yeremia Owen Milana Milana Nabawi, Rahmat Aziz Nurmahmudi, Nurmahmudi Pebrian, Pebrian Pepito, Ma Leona Maye B. Primawati Primawati, Primawati Purwantono, Purwantono Rahmadiawan, Dieter Ramadan, Ryan Ramadhan, Qadri Refdinal, Refdinal Remon Lapisa Rifelino Rifelino Saputra, Aprizal Saputra, Muhammad Pandi Shi, Shih-Chen Sidiq, Ahmad Halim sudiani, yoni Syahril Syahril Tin, Chau Trung Wanda Afnison Waskito Waskito, Waskito Wulansari, Rizky Ema Yogi Dian Alfana Yolli Fernanda Yufrizal Yufrizal, Yufrizal Zainal Abadi Zaus, Anggi Agni Zhuang, Wei-Ting