Article Per Year (5 Year)
p-Index From 2021 - 2026
7.803
P-Index
This Author published in this journals
All Journal CIVED (Journal of Civil Engineering and Vocational Education) Mechanical Engineering Education Journal Sainstek JURNAL PENDIDIKAN TAMBUSAI Eksakta : Berkala Ilmiah Bidang MIPA Jurnal Fokus Elektroda : Energi Listrik, Telekomunikasi, Komputer, Elektronika dan Kendali Journal of Applied Engineering and Technological Science (JAETS) MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Teknomekanik Fokus Elektroda: Energi Listrik, Telekomunikasi, Komputer, Elektronika dan Kendali) Jurnal Vokasi Mekanika MASALIQ: Jurnal Pendidikan dan Sains Fleksibel: Jurnal Pengabdian Kepada Masyarakat Journal of Engineering Researcher and Lecturer Journal of Innovative and Creativity IJIMCE : International Journal of Innovation in Mechanical Construction and Energy Journal of Civil Engineering and Vocational Education Mars: Jurnal Teknik Mesin, Industri, Elektro dan Ilmu Komputer
Yolli Fernanda
Universitas Negeri Padang
Religion Agriculture, Biological Sciences & Forestry Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Social Sciences Transportation Other

Published : 68 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 68 Documents
Search

 3   4   5   6   7 
Implementation of experiential learning method in mechanical drawing course to enhance student understanding through real projects Nasution, Ridhollah; K, Arwizet; Fernanda, Yolli
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.v3i2.127

Abstract

This research explores the implementation of experiential learning to improve students' understanding and skills in mechanical drawing using CAD software. We used this approach to identify challenges in learning mechanical engineering, including lack of time to learn CAD, suboptimal mechanical drawing skills, and limitations in producing details of mechanical components. Through a quasi-experiment with experimental and control classes, we measured the impact of the experiential learning method on improving conceptual understanding and practical skills in mechanical drawing. The results show that this approach is effective in improving students' understanding of detailed drawings and practical skills. The implementation of Experiential Learning also improved students' cognitive learning outcomes and psychomotor skills in mechanical drawing. The findings highlight the importance of adaptive and technological approaches to engineering education that are aligned with modern industry needs.
Comparative Analysis of Energy Efficiency Measurement in Building with Manual Calculation and RETScreen Expert Saputra, Andika; Kurniawan, Andre; Fernanda, Yolli; Karudin, Arwizet; Ahmed, Shabir
IJIMCE : International Journal of Innovation in Mechanical Construction and Energy Vol. 1 No. 2 (2024): IJIMCE : International Journal of Innovation in Mechanical Construction and Ene
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/ijimce.v1i2.27

Abstract

Energy efficiency is a crucial aspect of energy saving efforts. Energy efficiency is an important factor in reducing energy consumption and environmental impacts. One of the important steps that can be taken in achieving energy efficiency is to conduct an energy audit. An energy audit is a systematic process to evaluate energy use in a building and identify energy saving opportunities that can be done. RETSCreen Expert is one of the software that can be used for energy audits. This research focuses on analyzing the comparison between manual calculations and calculations using RETScreen Expert software on building energy efficiency. The factors used to analyze energy efficiency are air conditioning systems, room lighting systems, and the use of other electronic devices, over a one-year period. The analysis results show that there are differences in calculations between the use of manual methods and RETScreen Expert. The difference between manual calculation and RETScreen Expert is 15.42%. With this difference, it is assumed that manual calculations and calculations using RETScreen Expert do not have too much difference. The results of the energy audit also show that the air conditioning system (HVAC) is a major contributor to the building's energy consumption.
MEMBANGUN MASA DEPAN PROFESIONAL: ANALISIS IMPLEMENTASI MODEL PROJECT-BASED LEARNING PADA PEMBELAJARAN TEKNIK PENGELASAN Yuliardiansyah, Haris; Purwantono, Purwantono; Fernanda, Yolli; Yuvenda, Dori
Jurnal Vokasi Mekanika (VoMek) Vol 6 No 3 (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.v6i3.717

Abstract

Studi ini bertujuan untuk menilai efektivitas model pembelajaran berbasis proyek (Project-Based Learning atau PjBL) dalam pendidikan pengelasan di sekolah vokasi. Penelitian ini menyelidiki bagaimana penerapan PjBL dapat memperkuat pemahaman siswa tentang konsep pengelasan dan dampaknya pada hasil belajar. Pendekatan penelitian ini menggunakan eksperimen dengan dua kelompok: kelompok eksperimen yang menerima pembelajaran dengan metode PjBL, dan kelompok kontrol yang menerima metode pembelajaran konvensional. Kedua kelompok terdiri dari 17 siswa dari SMK Negeri 1 Guguak. Data dikumpulkan melalui pre-test dan post-test untuk mengukur pemahaman siswa sebelum dan sesudah penerapan PjBL. Analisis data kuantitatif menggunakan perangkat lunak SPSS 16 untuk menghitung rata-rata, median, nilai minimum, dan maksimum. Hasil analisis menunjukkan bahwa kelompok eksperimen mengalami peningkatan yang signifikan dalam post-test, dengan rata-rata nilai 80,59, sedangkan kelompok kontrol memiliki rata-rata 75,59. Median kelompok eksperimen (80) juga lebih tinggi daripada kelompok kontrol (75), mengindikasikan bahwa PjBL dapat meningkatkan pemahaman siswa dalam pendidikan pengelasan. Namun, penelitian ini juga menemukan tantangan, seperti keterbatasan sumber daya dan pemahaman pendidik tentang metode PjBL. Kesimpulan dari penelitian ini adalah bahwa PjBL efektif dalam meningkatkan pemahaman siswa tentang pengelasan di sekolah vokasi. Rekomendasi penelitian ke depan meliputi eksplorasi faktor yang mendorong keberhasilan PjBL serta strategi untuk mengatasi hambatan dalam penerapannya. Studi ini memberikan landasan bagi pembuat kebijakan dan pendidik untuk mengembangkan pendidikan vokasi yang lebih baik dan relevan dengan dunia industri.
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.
Characterization of Density and Stability of Oil Palm Empty Fruit Bunch Briquettes without Binder under Variations of Molding Temperature and Compaction Pressure Albasyit, Muhammad Ravi; Fernanda, Yolli; Refdinal, Refdinal; Kurniawan, Andre
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.v7i4.902

Abstract

The dependence on fossil fuels in Indonesia continues to increase in line with the growing energy consumption, thus necessitating alternative energy sources that are more environmentally friendly and sustainable. Oil palm empty fruit bunches (OPEFB) are agro-industrial waste with great potential to be utilized as raw material for briquette production; however, their utilization remains suboptimal. This study aims to analyze the effect of molding temperature and compaction pressure on the density and stability of binderless OPEFB briquettes. The research method employed is experimental, using a quantitative descriptive-analytical approach with non-carbonized briquettes. The treatment variations include molding temperatures (230°C, 250°C, and 280°C) and compaction pressures (1 MPa, 3 MPa, and 5 MPa) applied to two types of materials, namely dried and undried OPEFB. The results indicate that increasing temperature and compaction pressure significantly enhances briquette density. At a temperature range of 250–280°C and a pressure of 5 MPa, the briquettes achieved the highest density (>1.0 g/cm³) with strong shape stability. The thermoplastic lignin content in OPEFB melts at high temperatures, acting as a natural binder. Briquettes with a density ≥0.80 g/cm³ exhibited strong physical integrity, while those with a density <0.70 g/cm³ tended to be brittle. It can be concluded that the optimum conditions for producing high-quality binderless OPEFB briquettes are achieved at a temperature range of 250–280°C and a compaction pressure of 5 MPa, resulting in briquettes with excellent density and shape stability suitable as a renewable alternative energy source
Analisis LMTD dan Efektivitas terhadap Kinerja Pendinginan pada Desain Motor BLDC 5 kW Tipe Fluks Aksial Magnet Permanen Menggunakan Simulasi CFD Hidayattullah, Riezky; Yuvenda, Dori; Fernanda, Yolli; Kurniawan, Andre
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.v7i4.908

Abstract

Axial flux type BLDC motors primary issue is the high operating temperature of the stator and winding components, which can lower system efficiency and hasten the deterioration of the quality of the insulation material. This study is to examine the effects of geometric alterations to the cooling system, such as axial fins on the housing side and curved fins on the casing, on the temperature distribution of a 5-kW axial flux permanent magnet BLDC motor. Convection and conduction heat transport in the cooling system were modeled using ANSYS Fluent software and computational fluid dynamics (CFD) simulation techniques. The Log Mean Temperature Difference (LMTD) and the cooling design's relative efficacy in comparison to the baseline state are the primary metrics that are examined. According to the simulation results, the maximum winding temperature may be lowered to 311 K and the cooling distribution in the rotor, casing, and housing can be improved by adopting curved fin casing and axial fin housing. As the temperature differential between the coolant and the motor surface narrows, the LMTD value drops from the initial condition (5.10 K to 13.94 K), suggesting a more effective heat transfer process. Furthermore, the cooling system's efficiency has more than doubled since its original design. Overall, the study's findings demonstrate that enhancing the cooler's geometric design can increase the BLDC motor's thermal performance and prolong component life.
Characterization Of Bioethanol From Cassava As A Fuel In Gasoline Engines Ihsan, Muhammad; Fernanda, Yolli; K, Arwizet; Kurniawan, Andre
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.v7i4.913

Abstract

The energy demand in Indonesia continues to increase, particularly in the transportation sector, which remains highly dependent on fossil fuels such as gasoline. This dependency causes several issues, including the depletion of fossil fuel reserves and the rise of greenhouse gas emissions that negatively impact the environment. One potential solution to address these challenges is the development of bioethanol as a renewable and environmentally friendly alternative fuel. Bioethanol can be produced from starchy materials, one of which is white cassava (Manihot esculenta), known for its high productivity and wide availability in Indonesia. The production process of bioethanol consists of several stages, including liquefaction, fermentation, and distillation, where fermentation temperature plays a crucial role in determining the ethanol yield. Previous studies have shown that variations in fermentation temperature significantly influence the efficiency of bioethanol production. This study aims to characterize bioethanol produced from cassava fermentation at various temperature variations and to evaluate its potential as a fuel for gasoline engines. The results are expected to contribute to the improvement of bioethanol production efficiency and to promote cassava utilization as a renewable energy source in supporting national energy sustainability.
Karakterisasi Briket Arang Bekas Sampah yang Diproduksi dengan Press Hidrolik Illahi, M. Ilham Anugrah; Primawati, Primawati; Fernanda, Yolli; Yuvenda, Dori
Journal of Innovative and Creativity Vol. 5 No. 3 (2025)
Publisher : Fakultas Ilmu Pendidikan Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/joecy.v5i3.4516

Abstract

Kebutuhan energi di Indonesia yang terus meningkat menyebabkan ketergantungan tinggi terhadap bahan bakar fosil. Sebagai solusinya, biomassa khususnya sampah organik bisa dimanfaatkan sebagai bahan bakar alternatif terbarukan karena ketersediaannya melimpah. Energi biomassa yang akan dibuat menjadi briket diolah dan dimampatkan sehingga bentuknya lebih teratur dan mempunyai nilai kalor yang tinggi. Melalui proses penekanan dan pemanasan, sampah organik dapat diolah menjadi briket dengan nilai kalor dan efisiensi pembakaran yang lebih tinggi. Penelitian ini bertujuan untuk mengkaji pengolahan sampah organik menjadi briket menggunakan alat press hidrolik, menganalisis pengaruh variasi suhu terhadap karakteristik briket, serta menentukan kandungan proximate dan nilai kalor (Heating Heat Value). Metode yang digunakan adalah eksperimen menggunakan bahan baku sampah organik degan ukuran partikel lewat dari 18 mesh tetapi tidak lewat dari 30 mesh, variasi suhu 200℃, 250℃, dan 300℃ selama 10 menit. Pengujian yang dilakukan yaitu uji thermogravimetric untuk mengetahui kandungan proximate dari briket. Hasil penelitian menunjukkan suhu karbonisasi berpengaruh signifikan terhadap kualitas briket. Suhu 300℃ menghasilkan briket paling optimal dengan nilai kalor tertinggi (23.914 J/g), kandungan volatile terendah, dan fixed carbon tertinggi. Metode kompresi cetak panas menghasilkan briket padat dan kuat tanpa perekat tambahan. Nilai kalor sangat dipengaruhi oleh kandungan volatile dan fixed carbon yang dapat terlihat seiring dengan menurunnya kadar volatile dan meningkatnya fixed carbon. Pengolahan limbah sampah organik menjadi briket bisa menjadi potensi bahan bakar alternatif dengan besarnya Heating Value yang dihasilkan.
Co-Authors A, Yufrizal Abdu Idham Adam Mandra Suwandi Agustian, Rizki Ahmed, Shabir Akbar, Arifki Akhmad Rais Al Rahman, Muhammad Fadil Albasyit, Muhammad Ravi Ambiyar, Ambiyar Aminuyati Ananda, Yoga Rizki Andika Putra ANDIKA SAPUTRA Andre Kurniawan Andre Kurniawan Andre Kurniawan Arafat, Andril Arwizet Arwizet, Arwizet Ashekul Islam Azis, Ismail Budi Syahri Delima Yanti Sari Desyandri Desyandri Dionova, Aldi Dori Yuvenda Dwi Sakti Putra DWI SURYANTO Egis, Egis Eko Indrawan Elvira Zondra, Elvira Erizon, Nelvi Fadhilah Fadhilah Fadri, Muhammad Al Fahrendra, Aqsal Faisal, Afdal Fathi Aulia DZ Febri Prasetya Firma Yulianis Fitrah Qalbina Fitri Amelia Fonny Maswija Priscilla Hadi, Farhan Handayani, Meisuri Handrianto Handrianto Hendri Nurdin Hidayattullah, Riezky Illahi, M. Ilham Anugrah Irawan, Refitra Irfan, Abdillah Irzal Irzal Irzal, Irzal Jasman Jasman Kandena Putra, Tegar Kiwata, Takahiro Kurniawan, Badri La Ode Ahmad Barata Maresta, Felia Mega Oktaviani Mochammad Haikal Muhammad Akhbar Muhammad Ihsan Muhammad Riski Hidayat Muhammad Shiddiq Muhammad, Maghfiridhani Mulianti Nasution, Ridhollah Nelvi Erizon Nurdin Hendri Nurwijayanti Prasetya, Kresna Adi Pratomo, Muhammad Agung Primandari, Sri Riski Putri Primawati Primawati, Primawati Purwantono Purwantono purwantono purwantono Purwantono, Purwantono Putra, Randi Purnama Rahmadiawan, Dieter Ramadhan, Fadli Refdinal Refdinal, Refdinal Refdinal, Refdinal Remon Lapisa Ridhatul Arif Rifelino Rifelino Riki Saputra, Riki Riky Satria Rizki Ramadhan Nasution, Muhammad Robby, Muhammad Rudy Anarta Salmat, Salmat Sari, Fretina Seprianto, Ekon Sherly Rahmayani Shi, Shih-Chen Sri Rizki Putri Primandari Surya, Fajar Syahril Syahril Syaiful Salim Tamasya, Fido Delfri Teki Haryono Toto Sugiarto Usin Usin Waskito Willy Vernando Yovindra, Difa Yufrizal Yufrizal Yuliardiansyah, Haris Yusmaita, Eka Zainal Abadi Zhuang, Wei-Ting