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All Journal Jurnal Pendidikan Teknologi dan Kejuruan Rekayasa Mesin JOIV : International Journal on Informatics Visualization INVOTEK: Jurnal Inovasi Vokasional dan Teknologi Jurnal Penelitian Pendidikan IPA (JPPIPA) JURNAL PENDIDIKAN TAMBUSAI JETL (Journal Of Education, Teaching and Learning) Jurnal Teknik Mesin Jurnal Teknologi Informasi dan Pendidikan Jurnal Vokasi MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Reswara: Jurnal Pengabdian Kepada Masyarakat Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat SELODANG MAYANG Teknomekanik Multicience International Journal of Multidisciplinary Research and Literature (IJOMRAL) Jurnal Vokasi Mekanika Journal of Social And Economics Research Journal of Community Service Tsaqofah: Jurnal Penelitian Guru Indonesia CONSEN: Indonesian Journal of Community Services and Engagement Jurnal Aplikasi IPTEK Indonesia Al-DYAS : Jurnal Inovasi dan Pengabdian kepada Masyarakat Journal of Engineering Researcher and Lecturer Ranah Research : Journal of Multidisciplinary Research and Development International Journal of Multidisciplinary Research of Higher Education (IJMURHICA) Journal of Innovative and Creativity IJIMCE : International Journal of Innovation in Mechanical Construction and Energy Venus: Jurnal Publikasi Rumpun Ilmu Teknik journal of social and economic research Jurnal Pendidikan MIPA IJIS Edu : Indonesian Journal of Integrated Science Education JRTI (Jurnal Riset Tindakan Indonesia)
Arwizet Arwizet, Arwizet
Departemen Teknik Mesin Universitas Negeri Padang
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Development of an Electronic Job Sheet for Forward-Reverse Circuits in The Electrical Installation Technology Program Mega Risna; Sukardi; Arwizet K; Elfizon; Abdul Habib Arrasyidi Desky
Jurnal Penelitian Pendidikan IPA Vol 12 No 5 (2026): In Progress
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v12i5.15267

Abstract

The practicum learning process in vocational education requires instructional media that support students in understanding work procedures systematically and independently. However, the printed jobsheets used in forward-reverse circuit learning still have limitations in visualization and interactivity. This study aims to develop an electronic jobsheet (e-jobsheet) for forward-reverse circuit materials and determine its validity, practicality, and effectiveness. The research employed the Research and Development (R&D) method using the Instructional Development Institute (IDI) model, consisting of three stages: define, develop, and evaluate. The participants included expert validators, subject teachers, and 30 eleventh-grade students in the Electrical Power Installation Engineering program. Data were collected through observations, interviews, questionnaires, and learning outcome tests. The findings revealed that the developed e-jobsheet achieved material validity of 75% (valid), media validity of 85.93% (very valid), and language validity of 94.65% (very valid). The practicality test showed a score of 91.67% (very practical). In addition, the effectiveness test indicated an improvement in student learning outcomes, with the average pretest score increasing from 55 to 88.1 in the posttest and producing an N-gain score of 0.78 in the high category. Therefore, the developed e-jobsheet is considered valid, practical, and effective for supporting digital-based and student-centered practicum learning in forward-reverse circuit materials.
Analisis Karakteristik Udara Pendingin Terhadap Kinerja Air Conditioner (AC) Aqilvin Berliansyah; Arwizet Karudin; Refdinal Refdinal; Remon Lapisa
Jurnal Vokasi Mekanika (VoMek) Vol 7 No 1 (2025): Jurnal Vokasi Mekanika
Publisher : Unversitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/vomek.v7i1.838

Abstract

A stable room temperature is essential for comfort. This study tests the performance of split wall air conditioners with R-22 refrigerant and evaluates how to improve their efficiency through the influence of cooling air temperature. The experiment was carried out by varying the air temperature and cooling load using a heater. Data is taken every 15 minutes for 2 hours using a digital thermometer. The results showed that the maximum coefficient of performance (COP) value reached 8 indoors and 7.2 outdoors. Meanwhile, the maximum energy efficiency ratio (EER) value was recorded at 4.2 indoors and 3.7 outdoors. The stability of COP and EER values indicates that the Split Air Conditioner can operate efficiently despite variations in air temperature and cooling load. Cooler cooling air proved to be crucial in improving system efficiency. Conversely, higher refrigerant loads tend to decrease efficiency. However, this drop can be minimized by keeping the cooling air temperature low. The selection of the appropriate refrigerant, such as R-22, also plays an important role in supporting optimal performance. The combination of cooler cooling air and the right refrigerant allows the split air conditioner to operate with high efficiency. This research provides an important basis for the development of energy-efficient and efficient cooling systems. Optimizing the temperature of the cooling air is one of the main keys in improving the efficiency of the cooling system. With the right approach, split air conditioners can be used more effectively to create thermal comfort while saving energy.
Effect of Hydrophobic Surface on Thermoelectric Cooling-Based Atmospheric Water Generator Abdillah Irfan; Andre Kurniawan; Arwizet K; Yolli Fernanda
Jurnal Vokasi Mekanika (VoMek) Vol 7 No 2 (2025): Jurnal Vokasi Mekanika
Publisher : Unversitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/vomek.v7i2.843

Abstract

Water has a very important role in everyday life. Apart from humans, other living things also depend on water to survive. But there are still many areas in the world even in Indonesia still experiencing drought or clean water crisis. Therefore, new innovations are needed in producing water. One of the innovations is the atmospheric water generator (AWG) which utilizes the formation of water from air or condensation. The AWG in this research uses thermoelectricity as a cold source. Where thermoelectricity is less noisy, easy to obtain and assemble into a system, has a long service life without requiring maintenance. But thermoelectrics have disadvantages where cooling on thermoelectrics is less efficient. So to overcome this, I as the author use a hydrophobic surface as a condensation surface where it can accelerate condensation and increase the amount of water produced. In this study to see the comparison, tests were carried out using various types and surface areas.
Solar Home System Plant Menggunakan Gabungan Dari DVD dan Solar Panel Kresna Adi Prasetya; Arwizet K; Yolli Fernanda; Andre Kurniawan
Jurnal Vokasi Mekanika (VoMek) Vol 7 No 2 (2025): Jurnal Vokasi Mekanika
Publisher : Unversitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/vomek.v7i2.860

Abstract

Indonesia is a tropical country that has great potential for harnessing and managing solar energy. At present, the technology of converting solar energy into electrical energy such as solar cells still has weaknesses in terms of cost. Therefore, this study aims to test the potential of solar energy by creating a solar home system plant using DVD and Zener diode. This solar home system plant using DVD has the advantage of using low cost and the power generated can be said to be sufficient. In addition, this product can be used as a substitute for solar cells if properly applied. This study uses an experimental method in a quantitative approach. In this study, the independent variable is the structure of the solar panel while the dependent variable is the amount of energy read by the voltmeter. This study uses the photoelectric principle. Where photoelectricity is an electron released from the surface of an object exposed to light. This study was carried out by looking at how much power could be generated by DVD and Zener diode. The results showed that DVD and Zener diode can generate electrical energy, but the results are still too small and a large number of DVDs are needed to generate more energy. So it can be concluded that DVD still cannot replace solar panels, but can be used as a tool to maintain the stability of solar panels.
Students' Perception Of Machining Workshop Facilities And K3 Knowledge Towards Learning Outcomes In The Subject Of Lathe Machining Engineering In Grade 11 Of SMK Negeri 1 Sumatera Barat Ahmad Rifai Sihombing; Arwizet K; Rifelino Rifelino; Primawati Primawati
Jurnal Vokasi Mekanika (VoMek) Vol 7 No 2 (2025): Jurnal Vokasi Mekanika
Publisher : Unversitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/vomek.v7i2.861

Abstract

Vocational schools are a strategic forum to introduce and build students' awareness of the importance of behaviors that support Occupational Health and Safety (K3). Based on the results of pre-observation at SMK Negeri 1 West Sumatra, it was found that several problems were quite significant related to learning outcomes and students' knowledge about Occupational Health and Safety (K3) in the Lathe Machining Engineering Subject. Inadequate workshop facilities result in students not understanding and not utilizing K3 equipment. This problem is the author's material to conduct research to measure Students' Perception of Machining Workshop Facilities and Students' K3 Knowledge of Student Learning Outcomes which is carried out by descriptive analysis methods. This study analyzed two independent variables and one dependent variable. Variables Workshop facilities, variables K3 Knowledge and Learning Outcomes as variables Y. The purpose of this study is to show that the percentage results obtained from each variable can describe how students' perception of the K3 Machining and Knowledge Workshop Facilities and Learning Outcomes are. The results of the study show that the value of the variable (Workshop Facility) has a perception at a low level, namely 7 (35%) students, the variable (K3 Knowledge) can illustrate that students' perception of K3 Knowledge is very high where as many as 7 (35%) students have this perception This illustrates that students' understanding of K3 Knowledge is very good. Furthermore, the Y variable (Learning Outcomes) shows a high percentage value it can concluded that most students have a good understanding of K3 Knowledge.
Effect of Airfoil Profile Variations on the Rear Wing of a Racing Car on the Downforce Coefficient Using Computational Fluid Dynamics (CFD) Simulation Carlen Muhammad Hendra; Delima Yanti Sari; Arwizet K; Fitrah Qalbina
Jurnal Vokasi Mekanika (VoMek) Vol 7 No 3 (2025): Jurnal Vokasi Mekanika
Publisher : Unversitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/vomek.v7i3.881

Abstract

Variation of airfoil profile shape in race car rear wings plays a crucial role in generating optimal downforce to improve traction and vehicle stability. The main issue addressed in this study is the lack of clarity regarding which airfoil profile and angle of attack configuration are most effective in producing the highest downforce coefficient (Cdown). This research aims to analyze the aerodynamic performance of symmetric airfoils NACA 0012 and NACA 0015 at three different angles of attack, namely 9.5°, 19.5°, and 29.5°, using Computational Fluid Dynamics (CFD) simulation. The simulations were performed under steady-state flow conditions with an appropriate turbulence model to accurately capture pressure distribution and airflow characteristics. Results show that NACA 0012 generated higher and more stable Cdown values at low to medium angles, with the highest value of 1.4 at 29.5°. In contrast, NACA 0015 exhibited a more gradual performance increase and reached a Cdown of 1.2 only at the highest angle. The study concludes that slender airfoil profiles like NACA 0012 are more suitable for circuits with sharp corners, while NACA 0015 is better suited for straight tracks requiring progressive aerodynamic stability. This research contributes to optimizing rear wing design based on the aerodynamic demands of race cars.
Co-Authors - Primawati -, Nasrullah - A, Esa Hafizul A, Yufrizal Abadi, Zainal Abadi Abbas, Muhammad Rabiu Abd. Aziz Abd. Aziz Abdillah Irfan Abdul Aziz Abdul Habib Arrasyidi Desky Abdul Habib Arrasyidi Desky Ade Habibbullah Adel Lia Mardiana Adriansyah Adriansyah Aggrivina Dwiharzandis Agia Kulkarni Preti Agusriza Almalik Agustian, Rizki Ahmad Arif Ahmad Natafian Fauzi Ahmad Rifai Sihombing Ahmad, Salamuddin Ahmed, Shabir Akbar, Yaumil Akhmad Rais Aldi Alfarizi Alfarizi, Aldi Alvien Khardin Ambiyar, Ambiyar Amir, Irfan Ananda, Opi Andika Putra ANDIKA SAPUTRA Andre Kurniawan Andre Kurniawan Andre Kurniawan Anjelika, Dea Qori Anuar, Bakri Anugrah, Pinto Aprianti, Maidinda Aqilvin Berliansyah Arafat, Andri Arafat, Andril Arham, Veri Budiawan Arief Juneirul Pratama Ariyanto, Dedi Aryasandy, Nensy Asep Bunyamin Azmil Azman Bayu Rianto Berry Delfi Andra Budi Syahri Bulkia Rahim Bunyamin, Asep Butar, David Beckham Butar Carlen Muhammad Hendra Chrismondari, Chrismondari Daniel Fifaldi Nardo Darmawi . Delima Yanti Sari Denisa Putri Jadenis Desmarita Leni Deviya Aprilman Dionova, Aldi Dodi Ariska Doni Saputra Dori Yuvenda Efendi, Defindo Efriwan Efriwan Eko Indrawan Elfizon Endri Rizki Anugrah Erdi, Putri Nurhalimah Erizon, Nelvi Erlanda, Rendi Fachrur Rozi Fachry Novrianda Fahrendra, Aqsal Faisal, Afdal Fajri Ramadhan Fakhrur Rozi, Fakhrur Febri Prasetya Felia Maresta Fiqi Gusti Irawan Firman Omni Saputra Fitrah Qalbina Fretina Sari Giatman Giatman, M Gito Okto Rito FM Gusta Nanda Habibbullah, Ade Hadi, Farhan Hafiz Alfadri Ramadhan Haris Haris Haris Haris, Haris Hasan Maksum Hasanuddin Hasanuddin Hasanuddin WS Helga Yermadona Hendra Hendra Hendri Nurdin Idra Putra Ikhsan Dani Nugraha Ikhsan, Ghufra Irfan Amir Irma Yulia Basri Irzal Irzal Jalil, Muhammad Jasman Jasman Jasman Jasman Jasman Jimmi Zamora Jonni Mardizal Junil Adri Kandena Putra, Tegar Khairuni Delfi Anisa Kresna Adi Prasetya Krismadinata Krismadinata Krismadinata Krismadinata Krismadinata Krismadinata, Krismadinata kusuma, Yuda Perdana M. Agus Trian Putra M.Y. Setiawan Martias Martias Mega Risna Miftahul Arrafi Monica, Okzalia Muchlisinalahuddi Muchlisinalahuddi Muhammad Akhbar Muhammad Anwar Muhammad Aulia Ifsan Muhammad Lathif Mahendra Muhammad, Maghfiridhani Muharir Muharir Muharni, Riza Mulianti Mulyanti Muslim Muslim Nabawi, Rahmat Azis Nadia Utari Nasution, Ridhollah Nelvi Erizon Nidya Meliza Putri Nizwardi Jalinus Nofri Helmi Nofri Helmi Helmi Nogi Handepi Nurdin Hendri Nurfajri Nurfajri Nurfajri Nurfajri, Nurfajri Nuzul Hidayat, Nuzul Okky Syaifatul, Achmad Oky Erlangga Oky Erlangga Okzama, Rebi OSKAH DAKHI Ovi Marendah Pasaribu, Reynaldy Peng, Lim Hooi Prasetyo, Vicky Primawati Primawati Primawati Primawati, Primawati Purnama, Andreadi Purwantono Purwantono Purwantono purwantono purwantono Purwantono, Purwantono Putra, Idra Putra, Rido Putra, Romi Putri Nurhalimah Erdi Putri, Prima Yane Rahmad Robby Alzam Rahmat Afdhol Rahmat Syukri Ramfit Novari Randhy Alfarishi Rebi Okzama Refdinal Refdinal Refdinal Refdinal Refdinal, Refdinal Refdinal, Refdinal Remon Lapisa Remon Lapisa Remon Lapisa Remon Lapisa Rifelino Rifelino Rio Ramadhan Rivanol Chadry Rizka Rizka Rizka Rizka, Rizka Rizki Ramadhan Nasution, Muhammad Rizky Ema Wulansari Rizky Ema Wulansari Robby, Muhammad Robert, Julio Rozandi, Azel Ruzita Sumiati Said Fuad Amry Salamuddin Ahmad Seprianto, Ekon Setiawan, Sepdirama Sharma, Jai Kumar Simon, Ryan Ananda Siswahyudianto Soretire Lanrewaju Kamorudeen Sri Rizki Putri Primandari Steven Thomas Anggriyanto Sukardi Sukardi Sukardi, Sukardi Supardi Supardi Suparno Suparno Suparno Suparno Suparno Syah, Muhammad Rayhan Syukri, Rahmat Toto Sugiarto Totoh Andayono Usin Usin Usmeldi Usmeldi Wahyu Ananda Putra Wahyudi Fachrul Syafra Wakhinuddin WAKHINUDDIN SIMATUPANG Wanda Afnison Waskito Waskito Waskito Waskito Waskito, Waskito Winaldi Alfonis Wulansari, Rizky Ema Yandra, Muvi Yanriko, Armizal Yanto, Doni Tri Putra Yazmendra Rosa Yoga Novrialdy Yolli Fernanda Yovindra, Difa Yufrizal A Yufrizal Yufrizal Yufrizal Yufrizal Yulira Emputri Yurika Putri Zainal Abadi Zainal Abdi Zulvani Adha