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All Journal International Journal of Renewable Energy Development IPTEK The Journal of Engineering IPTEK Journal of Proceedings Series IPTEK The Journal for Technology and Science Indonesian Journal of Science and Technology INVOTEK: Jurnal Inovasi Vokasional dan Teknologi JURNAL PENDIDIKAN TAMBUSAI Jurnal Ilmiah Pendidikan Profesi Guru Ensiklopedia of Journal EDUTEC : Journal of Education And Technology Journal of Applied Engineering and Technological Science (JAETS) PAKAR Pendidikan Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat Teknomekanik JPTE: Jurnal Pendidikan Teknik Elektro AEEJ : Journal of Automotive Engineering and Vocational Education JMES The International Journal of Mechanical Engineering and Sciences Mechanical Engineering for Society and Industry Automotive Experiences Jurnal Vokasi Mekanika Journal of Scientech Research and Development MASALIQ: Jurnal Pendidikan dan Sains Al-DYAS : Jurnal Inovasi dan Pengabdian kepada Masyarakat Jurnal Pendidikan Agama Islam International Journal of Renewable Energy Development Journal of Innovative and Creativity Journal of Civil Engineering and Vocational Education Mars: Jurnal Teknik Mesin, Industri, Elektro dan Ilmu Komputer Edumaspul: Jurnal Pendidikan
Dori Yuvenda
Departemen Teknik Mesin, Universitas Negeri Padang
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Fuel Control System on CNG Fueled Vehicles using Machine Learning: A Case Study on the Downhill Suroto Munahar; Muji Setiyo; Ray Adhan Brieghtera; Madihah Mohd Saudi; Azuan Ahmad; Dori Yuvenda
Automotive Experiences Vol 6 No 1 (2023)
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.8107

Abstract

Compressed Natural Gas (CNG) is an affordable fuel with a higher octane number. However, older CNG kits without electronic controls have the potential to supply more fuel when driving downhill due to the vacuum in the intake manifold. Therefore, this article presents a development of a CNG control system that accommodates road inclination angles to improve fuel efficiency. Machine learning is involved in this work to process engine speed, throttle valve position, and road slope angle. The control system is designed to ensure reduced fuel consumption when the vehicle is operating downhill. The results showed that the control system increases fuel consumption by 25.7% when driving downhill which an inclination of 5ᵒ. The AFR increased from 17.5 to 22 and the CNG flow rate decreased from 17.7 liters/min to 13.8 liters/min which is promising for applying to CNG vehicles.
PENERAPAN MODEL PEMBELAJARAN PROJECT BASED LEARNING UNTUK MENINGKATKAN HASIL BELAJAR SISWA Sadri Arjono; Nelvi Erizon; Junil Adri; Dori Yuvenda
Jurnal Vokasi Edukasi (VomEk) Vol 5 No 2 (2023): 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.v5i2.537

Abstract

Pendidikan di kelas ialah kunci terpenting keberhasilan pengajaran salah satunya model belajar yang dipakai oleh pendidik. Hasil belajar merupakan kriteria keberhasilan siswa di kelas. Khususnya nilai ujian peserta didik yang dilakukan pada akhir semester memperlihatkan penguasaan siswa yang belum memperoleh batas kriteria ketuntasan minimum (KKM), sehingga diasumsikan perolehan dengan hasil belajar las SMAW kelas XI teknologi las di SMKN 1 Sumbar masih belum sesuai harapan. Penelitian ini dilakukan dengan memakai classroom action research. Subjek research yakni siswa Teknik Pengelasan kelas XI dengan 14 orang siswa. Penelitian terlaksana pada bulan Januari-Februari 2023 mempunyai 2 siklus. Instrumen penelitian ini menggunakan soal tes pilihan ganda untuk tingkat kognitif dan lembar pengamatan proyek pada tingkat psikomotorik. Hasil dari pengamatan siklus 1 dan 2 memperlihatkan kenaikan pada hasil pembelajaran siswa dengan adanya peningkatan antar siklus. Pelaksanaan siklus pertama memperoleh nilai 74,28 yang bergerak dengan hasil peningkatan jadi 81,49 siklus kedua. Persentase ketuntasan klasikal siklus 1 bernilai 57%, ada kenaikan pada siklus 2 jadi 85%. Indikator keberhasilan research yang ditetapkan yaitu 75 dengan ketuntasan klasiklal minimal 75%. Maka oleh karena itu adapun kesimpulan bahwasanya menerapankan jenis pembelajaran berbasis project based learning pada mata pembelajaran Las SMAW mampu menumbuhkan motivasi dan menaikan hasil belajar siswa.
ANALISIS EFEKTIVITAS SNAPPING ROLL PADA TRAKTOR PEMANEN JAGUNG Ajib Jihadal Mahmud; waskito waskito; Purwantono purwantono; Dori Yuvenda yuvenda; Junil Adri Adri
Journal of Scientech Research and Development Vol 5 No 2 (2023): JSRD, December 2023
Publisher : Ikatan Dosen Menulis

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56670/jsrd.v5i2.197

Abstract

Tujuan penelitian ini adalah untuk mengetahui efektivitas pengaruh kecepatan terhadap hasil pemanenan jagung. berdasarkan pengertian penelitian eksperimen,maka pada penelitian ini dilakukan dengan kecepatan putaran snapping roll di rpm 930,8 rpm dan 969,8 rpm.Pemanenan pada kecepatan 930,8 rpm didapatkan waktu pemanenan perbatang jagung nya antara 1,20 detik hingga 1,77 detik dengan total waktu dalam pemanenan 4 batang tersebut adalah 5,69 detik dengan rata-rata pemetikan perbatang adalah 1,42 detik,pada kecepatan ini slip yang ditimbulkan belt dan pully adalah sebanyak 28,7%.Sedangkan pada kecepatan 969,8 rpm didapatkan waktu pemanenan perbatang jagungnya antara 1,16 rpm sampai 1,47 detik dengan total waktu pemanenan 4 batang jagung tersebut adalah 5,25 detik dengan rata-rata pemetikan perbatang adalah 1,31 detik,pada kecepatan ini slip yang ditimbulkan belt dan pully adalah sebanyak 27,4%. Seperti yang dilihat kecepatan snapping rolls terbaik adalah 969,8 Rpm dengan waktu pemanenan 1,16 detik dengan kehilangan putaran sebanyak 139,3 Rpm,Efektifitas pemetikan adalah 1 atau 100% dan efektifitas pengkelobotan 0.Serta slip yang ditimbulkan belt dan pully adalah sebesar 27,4%.
Triglycerides of Crude Palm Oil to Biokerosene: Studies on Electrolysis and Electromagnetic Effect Sri Rizki Putri Primandari; Krismadinata Krismadinata; Dori Yuvenda; Remon Lapisa; Andre Kurniawan; Mulianti Mulianti; Muhammad Djoni Bustan; Sri Haryati; Gusni Sushanti; Tarig Elshaarani; Yus Donald Chaniago
Journal of Applied Engineering and Technological Science (JAETS) Vol. 5 No. 1 (2023): Journal of Applied Engineering and Technological Science (JAETS)
Publisher : Yayasan Riset dan Pengembangan Intelektual (YRPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37385/jaets.v5i1.3127

Abstract

Crude Palm Oil (CPO) is a potential feedstock for biokerosene. However, it is problematic when used directly because it is gummy, has a high viscosity and is degradable. Various conversion processes have been conducted that directly convert CPO into biokerosene, but it requires high temperature and pressure. Therefore, as a novelty, this study aims to develop the technology for converting triglycerides into biokerosene under relatively low operating conditions and producing similar petroleum kerosene by electrolysis-assisted and electromagnetic induction. In this study, the conversion technology process was conducted in three steps (i) converting triglycerides to Free Fatty Acids (FFA), (ii) converting FFA to alkanes, and (iii) converting alkanes to biokerosene. Step (ii) is assisted by the electrolysis process, meanwhile, step (iii) is assisted by electromagnetic irradiation. The finding showed that electrolysis obtained 73.47% yield of alkanes and electromagnetic irradiation obtained 78.02% yield of biokerosene.  Biokerosene is almost close to kerosene-based petroleum in terms of colour Saybolt, flash point and Net Heating Value. The findings of this study may provide an alternate technology approach for biokerosene synthesis and solution kerosene scarcity.
Effect of Adding Combustion Air on Emission in a Diesel Dual-Fuel Engine with Crude Palm Oil Biodiesel Compressed Natural Gas Fuels Dori Yuvenda; Bambang Sudarmanta; Arif Wahjudi; Rozy Aini Hirowati
International Journal of Renewable Energy Development Vol 11, No 3 (2022): August 2022
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.2022.41275

Abstract

A diesel dual-fuel engine uses two fuels designed to reduce the consumption of fossil fuels. Generally, the specific fuel consumption of diesel dual-fuel engines has increased.  However, in   combination with alternative fuels, namely compressed natural gas injected through air intake, the use of diesel fuel can be reduced. However, using two fuels in a diesel dual-fuel engine increases the equivalent ratio; therefore, the air and fuel mixture becomes richer because the air entering the cylinder during the intake stroke is partially replaced by compressed natural gas. This results in incomplete combustion and increases exhaust emissions, particularly hydrocarbon (HC) and carbon monoxide (CO) emissions. This study aims to improve the combustion process in dual-fuel diesel engines by improving the air-fuel ratio; thus, it can approach the stoichiometric mixture by adding combustion air forcibly to produce complete combustion to reduce CO and HC emissions. An experimental approach using a single-cylinder diesel engine modified into a diesel dual-fuel engine powered by crude palm oil biodiesel and compressed natural gas was adopted. The combustion air was forcibly added to the cylinder using an electric supercharger at different air mass flow rates ranging from 0.007074 to 0.007836 kg/s and different engine loads (1000 to 4000 watts). The results indicated that adding more air to the cylinder could produce complete combustion, reducing the emission levels produced by a diesel dual-fuel engine. An air mass flow rate of 0.007836 kg/s can reduce CO, HC, and particulate matter emissions by averages of 60.55%, 49.63%, and 86.87%, respectively, from the standard diesel dual-fuel engine. Increasing in the amount of oxygen concentration improves the quality of the air-fuel ratio, which results in improved combustion and thereby reducing emissions.
Upskilling Guru Kejuruan melalui Pelatihan Kendali Motor Listrik Berbasis Variable Speed Drive Doni Tri Putra Yanto; Citra Dewi; Dori Yuvenda; Aswardi Aswardi; Rahmat Hidayat; Muslim Muslim; Hermi Zaswita
Jurnal Pendidikan Teknik Elektro Vol 4 No 2 (2023): Jurnal Pendidikan Teknik Elektro
Publisher : Jurusan Teknik Elektro Fakultas Teknik Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jpte.v4i2.341

Abstract

This research discusses efforts to enhance the professional competence of teachers in Vocational High Schools (SMK) specializing in the field of Electricity. It does so through the implementation of a training program based on Variable Speed Drive (VSD) technology for electric motor control. The training program encompasses two distinct learning approaches: theoretical and practical instruction on motor control using VSD technology. This material forms an essential part of the curriculum for installing electric motors in vocational schools. It is crucial for every teacher to comprehend it thoroughly, as vocational school curricula must adapt to the latest developments in science and technology, commonly referred to as the Fourth Industrial Revolution (Industry 4.0). This research focused on 20 electricity teachers at SMK Negeri 1 Bukittinggi as its subjects. The research findings indicate a significant improvement in teachers' professional competence in electric motor installation, particularly in electric motor control using VSD technology, following the implementation of the training program. This improvement is reflected in the posttest results, with 88.7% of participants passing in this particular subject. In conclusion, the Variable Speed Drive Based Electric Motor Control Training for teachers can effectively enhance their professional competence in electric motor installation, aligning with the demands of Industry 4.0.
IMPLEMENTASI PEMBELAJARAN KALOBORATIF BERBASIS PEMBELAJARAN BERBASIS PROJEK PADA HASIL BELAJAR SISWA Agia Kulkarni Preti; Arwizet K; Purwantono Purwantono; Dori Yuvenda
Jurnal Vokasi Edukasi (VomEk) Vol 5 No 4 (2023): 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.v5i4.625

Abstract

Menjaga dan meningkatkan kualitas pendidikan adalah tantangan penting. Banyak sistem pendidikan menghadapi masalah seperti kurikulum yang tidak sesuai, kurangnya guru yang berkualitas, dan metode pengajaran yang tidak memadai. Maka, research ini bertujuan mengimplementasikan pembelajaran kaloboratif berbasis projek untuk melihat hasil belajar. Subjek penelitian ini berasal dari SMKN 1 Pariaman sebanyak 64 orang. Metode penelitian dipakai quasi-experimental design. Instrumen research lembar tes, uji kevalidan, realiabel, normality, homogenity, dan independent uji-t. Hasil research ini memperoleh pre-test experimental group bernilai 75 dan post-test experimental group bernilai 82.6, sedangkan perolehan pre-test control group bernilai 72.5 dan post-test control group bernilai 76.4. Hal ini membuktikan perlakuan yang diberikan pembelajaran kaloboratif berbasis PjBL berdampak pada hasil belajar experimental group dibandingkan control group tanpa perlakuan. Adapun hasil pengujian normality didapatkan terdistribusi normal nilai sig>0,05, pengujian homogenitas pada sebelum dan sesudah test dengan besaran nilai signifikansi. > 0,05 varians tersebut homogen, dan hasil indepenten t-test diperoleh sebesar 1.245 dan post-test sebesar 3.587, maka hasil Uji T bernilai 0.001 memiliki ketentuan nilai signifikan. 2-tailed < 0.05. Maka dari itu, simpulan dari sikap berpikir kritis, kreatif, kolaboratif, komunikatif dan bertanggung jawab pada pembelajaran dasar teknik permesinan program studi-Teknik Mekanika-Industri di SMKN 1 Pariaman, dilakukan dengan menggunakan rubrik penilaian sikap dan didapatkan hasil nilai sikap control class 80 dan experiment class 84.
Design and Crash Test on a Two-Passenger City Car Frame using Finite Element Method Putra, Randi Purnama; Yuvenda, Dori; Afnison, Wanda; Lapisa, Remon; Milana, Milana; Fauza, Anna Niska; Harmanto, Dani
Automotive Experiences Vol 7 No 2 (2024)
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.11306

Abstract

The chassis is an important part of a car which must have a strong construction to withstand the weight of the vehicle. The purpose of this research is to create a city car's chassis that can hold two passengers and then crash-test the finished product. In this research, a development method was used using SolidWorks software and the student version of ANSYS R2 2023 as software for creating chassis designs and crash test simulations. The study's findings indicate that the car frame's measurements are 2.46 meters in length, 1.33 meters in height, and 1.39 meters in width. The steel of the ASTM A36 type was utilized as the material in the computational study of the frame. The results show that increasing speed causes an increase in deformation, with the peak deformation at a speed of 100 km/h. The maximum deformation occurs at 0.007 seconds with a value of 203.51 mm at the top pillar of the car. The deformation increases from 97.196 mm at 0.0035 s to 161.22 mm at 0.0056 s. However, deformation occurs mainly in the front zone of the car frame and is not significant in the passenger zone.
Hubungan Fasilitas Workshop terhadap Hasil Belajar pada Mata Pelajaran Teknik Frais Siswa Kelas XI Teknik Pemesinan SMK Negeri 1 Tanjung Raya Robert, Julio; Erizon, Nelvi; K, Arwizet; Yuvenda, Dori
Al-DYAS Vol 3 No 3 (2024): OKTOBER
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/aldyas.v3i3.3752

Abstract

Vocational High School (SMK) which is a school that educates students with professional knowledge and skills as well as talents and interests to prepare skilled workers in accordance with the needs of the business world and industry. Therefore, in the learning process, practicum facilities in the workshop play an important role in determining the success of students to learn effectively so as to achieve the desired learning outcomes. This study aims to determine the relationship between the completeness of Workshop facilities and student learning outcomes in grade XI students majoring in Mechanical Engineering at SMK Negeri 1 Tanjung Raya. This study uses a type of correlational quantitative research with a population of 60 students. The questionnaire with 35 items was used as a measuring tool, the results of the study showed a significant relationship between the learning outcomes of milling machining techniques of grade XI students of SMK Negeri 1 Tanjung Raya and the completeness of workshop facilities where R calculated (0.603) > R table (0.254). The completeness of workshop facilities contributed 36.3% to the success of milling machining engineering learning for grade XI students of SMK Negeri 1 Tanjung Raya and another 63.7% was influenced by other factors.
Simulasi Numerik Variasi Intake terhadap Karekteristik Aliran pada Basin Turbin Vortex Andri, Rezky; Yuvenda, Dori; Purwantono, Purwantono
MASALIQ Vol 4 No 1 (2024): JANUARI
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/masaliq.v4i1.2666

Abstract

Water has an important role to be used as a source of electrical energy, water is used to drive turbines that will later produce electrical energy, water turbines have great potential to be developed, especially in vortex turbines. A vortex turbine is a turbine that utilizes whirlpool energy to rotate the turbine blades and then convert it into electrical energy. The purpose of this study was to determine the characteristics of the flow in each inflow variation in the vortex turbine basin. The simulation in the study was carried out using solidworks 2023 software using the CFD (Computational Fluid Dynamics) method. After running simulations, velocity data were obtained on each Outer Wall Tangential inflow design of 0.496 m/s, Involute of 0.517 m/s, Ramped Entry of Scrolled Evolute of 0.0857 m/s, and Involute Ramp of 0.551 m/s. pressure in each Outer Wall Tangential inflow design of 100,793.39 N/, Involute of 99,400.12 N/, Ramped Entry of Scrolled Evolute of 99,270.4 N/, and Involute Ramp of 99,324.31 N/. From the simulation results, it can be seen that the largest velocity is obtained in the Ramped Entry of Scrolled Evolute design, and the largest pressure is obtained in the Outer Wall Tangential design.
Co-Authors Abdu Idham Aditya Kolakoti Agia Kulkarni Preti Ahmad Arif Ahmad Arif Ajib Jihadal Mahmud Al Munawir Alfa Rehan Oktori Rahmadana Alper Calam Anaperta, Yoszi Mingsih Andre Kurniawan Andre Kurniawan Andri Saputra Andri, Rezky Andrizal Andrizal Aprinaldi, Aprinaldi Arham, Veri Budiawan Ari Kurniawan Arif Wahjudi Armes, Deya Arwizet Arwizet, Arwizet Asnil Asnil Aswardi Aswardi Azis, Ismail Azuan Ahmad Bahrul Amin Bambang Sudarmanta Bambang Sudarmanta Bulkia Rahim Capilayan, Mycel A. Citra Dewi Dedi Setiawan Dedi Setiawan Delima Yanti Sari Dwi Sudarno Putra Eko Indrawan Erizon, Nelvi Erzeddin Alwi Fancer Rumahorbo Faris Afif Fauza, Anna Niska Fitrah Qalbina Fitri Yanti Gusni Sushanti Hanifa, Nurul Hansi Effendi Haq, Syaiful Harmanto, Dani Hasan Maksum Hendra Dani Saputra Hendra Hidayat Hermi Zaswita Hidayattullah, Riezky Husnul Khotimah I Gusti Bagus Wiksuana Illahi, M. Ilham Anugrah Illahi, Ridho Indradewa, Rhian Irzal, Irzal Jalil, Muhammad Jamaludin Jamaludin Jamaludin Jamaludin Jose da Silva Junil Adri Kelvin Permana Saputra, Dwi Koto, Rahmat Desman Krismadinata Krismadinata Krismadinata Krismadinata, Krismadinata Kurnia, M. Chalid M. Nasir M. Yasep Setiawan Madihah Mohd Saudi Maidi Saputra Martias Martias Martias Martias Masykur, Masykur Milana Milana Moch. Aziz Kurniawan Muhammad Djoni Bustan Muhammad Kunta Biddinika Muhammad Rifqi Muhibbudin, Muhibbudin Muji Setiyo Muldi Yuhendri Mulianti Mulya Melda Muslim Muslim Mutia Srimaningsi Muzakir Nabilla Nelvi Erizon Nor Azwadi Che Sidik Nurdin Hendri Nurmansyah, Ridho Nuzul Hidayat, Nuzul Oki Muraza Olusegun David Samuel Olusegun David Samuel Pribadyo, Pribadyo Primawati Primawati, Primawati Purwanto, Wawan Purwantono Purwantono purwantono purwantono Purwantono, Purwantono Putra, Randi Purnama Putra, Setrihan Rahadian Zainul Rahmadona, Tiwi Rahmat Hidayat Raihan, Muhammad Randi Purnama Putra Ray Adhan Brieghtera Refdinal, Refdinal Remon Lapisa Reva Lina Putri Rifdarmon Rifdarmon Rifelino Rifelino Robert, Julio Rozy Aini Hirowati Sadri Arjono Sri Haryati Sri Rizki Putri Primandari Suroto Munahar Tamasya, Fido Delfri Tarig Elshaarani Tasyah, Tasyah Tiwi Rahmadona Toto Sugiarto Tuessi Ari Purnomo Tymofiiv, Volodymyr Wagino Wagino Wagino Wanda Afnison Waskito Waskito Waskito, Waskito Y, Fadhil Yanto, Doni Tri Putra Yolli Fernanda Yovindra, Difa Yuliardiansyah, Haris Yus Donald Chaniago Zahren, Zahren Zainal Abadi