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All Journal CIVED (Journal of Civil Engineering and Vocational Education) Mechanical Engineering Education Journal Sainstek JURNAL PENDIDIKAN TAMBUSAI JOURNAL OF SCIENCE AND SOCIAL RESEARCH 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 Didaktik : Jurnal Ilmiah PGSD STKIP Subang Teknomekanik Fokus Elektroda: Energi Listrik, Telekomunikasi, Komputer, Elektronika dan Kendali) Jurnal Vokasi Mekanika Tsaqofah: Jurnal Penelitian Guru Indonesia 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

Author-ID : 3761985

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 Economics, Econometrics & Finance 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

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DAMPAK PELAKSANAAN PRAKERIN TERHADAP PSIKOMOTORIK SISWA PASCA PEMBELAJARAN DARING DI SMK NEGERI 2 SUNGAI PENUH Teki Haryono; Budi Syahri; Yolli Fernanda; Zainal Abadi
Jurnal Vokasi Mekanika (VoMek) Vol 5 No 1 (2023): Jurnal Vokasi Mekanika
Publisher : Unversitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/vomek.v5i1.491

Pendidikan merupakan komponen penting dalam keberhasilan suatu bangsa. Lembaga pendidikan formal yang dikenal dengan pendidikan menengah kejuruan bertujuan untuk membekali lulusannya yang berkualitas dan berkompetensi di bidang keahliannya yang diperlukan untuk sukses di dunia kerja setelah lulus. SMK tidak hanya memberikan materi teori dan praktek di sekolah, tetapi juga memberikan pengalaman kerja. Salah satu inovasi yang digunakan oleh SMK adalah sistem pelatihan atau yang dikenal dengan Praktek Kerja Industri (Prakerin). Namun, sebelum siswa melaksanakan prakerin siswa dihadapkan dengan Covid-19 yang mana proses belajar mengajar harus dilaksanakan secara daring. Singkronisasi pembelajaran praktik di sekolah dengan yang ada di industri juga blum maksimal. Penelitian ini bertujuan untuk mengetahui dampak pelaksanaan prakerin terhadap psikomotorik siswa pasca pembelajaran daring di SMK Negeri 2 Sungai Penuh. Sampel pada penelitian terdiri 5 orang di lapangan tempat peserta didik melakukan magang. Pengambilan data dilakukan dengan membagikan kuesioner kepada industri dan mewawancarai orang-orang di industri. Dalam penelitian ini menggunakan metode kuantitatif. Sementara itu untuk mengolah data memakai dua analisis yaitu analisis deskriptif dan persentase. Menurut hasil penelitian analisis deskriptif didapatkan mean 19, median 18, mode 2, standard deviasi 5.2, range 12, minimum 14, maximum 26, sum 96. Analisis persentase menunjukkan bahwa siswa masih memiliki kendala pada aspek psikomotorik pada saat melaksanakan prakerin. Berdasarkan dari hasil analisis deskriptif dan analisis persentase dapat disimpulkan terdapat dampak mata pelajaran praktikum yang dilaksanakan secara daring terhadap psikomotorik siswa saat pelaksanaan prakerin.

Assessing the Potentiality of Aerobic Rolling Composter to Hasten Vegetable and Fruit Waste Fitri Amelia; Eka Yusmaita; Yolli Fernanda; Firma Yulianis; Sherly Rahmayani; Ashekul Islam
EKSAKTA: Berkala Ilmiah Bidang MIPA Vol. 24 No. 01 (2023): Eksakta : Berkala Ilmiah Bidang MIPA (E-ISSN : 2549-7464)
Publisher : Faculty of Mathematics and Natural Sciences (FMIPA), Universitas Negeri Padang, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/eksakta/vol24-iss01/368

Organic waste is mainly categorized in recent days as household waste and city garbage. To meet eco-friendly waste management, incorrect composter or conventional composting methods do not fulfilling the demands even though sometimes the composting procedure is so lengthy. To speed up the composting process, our research team has developed an aerobic composter using microorganisms, e.g., Trichoderma, Effective Microorganism 4 (EM4), and a combination of Trichoderma. Three different aerobic rolling composters (ARC) were designed to speed up the composting process during the testing stage by employing EM4. It showed a greater reduction in waste height utilizing EM4 on the 15th day (3.8%-17.9%) than the conventional one (2%). In addition, inoculation of EM4 and Trichoderma in combination with EM4 caused a 45% reduction in weight. Thus, the composter (type 3) efficiently decomposes the waste with a shorter composting period.

Analysis of Fluid Flow in Pipeline and Cyclone Systems for Preduster Coal Mill Indarung V Factory Using Flow Simulation Akhmad Rais; Yolli Fernanda; Arwizet K; Andre Kurniawan
MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Vol 5 No 2 (2023): Motivection : Journal of Mechanical, Electrical and Industrial Engineering
Publisher : Indonesian Mechanical Electrical and Industrial Research Society (IMEIRS)

Cyclone is a tool for selling particulates from fluid streams without a filter. Cyclone in this case is to separate particulates from the air stream so they don't enter the coal mill. This study aims to analyze the effectiveness of the cyclone, pressure drop, and head loss in the system. The particles to be separated from the fluid stream are 9 microns in size. Pipe length for flow distribution is 67.24 m and 7 units of elbows. This analysis uses numerical methods with flow simulation features and compares them with theoretical results. Theoretical results obtained a pressure drop of 4042.74 Pa and a head loss of 607.82 m. This pressure drop is greater than the pressure fan, which is 1333 Pa. The simulation results of the inlet pipe 200 with a pressure drop of 4207.42 Pa, a head loss of 632.58 m, and an efficiency of 43%. At the inlet pipe 100 with a pressure drop of 4146.04 Pa, a head loss of 623.35 m, and an efficiency of 17%. At the inlet pipe 250 with a pressure drop of 4362.61 Pa, a head loss of 655.82 m, and an efficiency of 39%. Best results on pipe inlet 200. Cyclone merupakan alat untuk memisahkan partikulat dari aliran fluida tanpa filter. Cyclone dalam hal ini untuk memisahkan partikulat dari aliran udara supaya tidak masuk ke coal mill. Penelitian ini bertujuan untuk menganalisis efektivitas cyclone, pressure drop, dan head loss pada sistem. Partikel yang akan dipisahkan dari aliran fluida berukuran 9 mikron. Panjang pipa untuk distribusi aliran yaitu 67,24 m dan elbow sebanyak 7 unit. Analisis ini menggunakan metode numerik oleh fitur flow simulation dan membandingkannya dengan hasil teoritis. Hasil teoritis didapatkan pressure drop 4042,74 Pa dan head loss 607,82 m. Pressure drop ini lebih besar dari pressure fan yaitu 1333 Pa. Hasil simulasi inlet pipa 200 dengan pressure drop 4207,42 Pa, head loss 632,58 m, dan efisiensi 43%. Pada inlet pipa 100 dengan pressure drop 4146,04 Pa, head loss 623,35 m, dan efisiensi 17%. Pada inlet pipa 250 dengan pressure drop 4362,61 Pa, head loss 655,82 m, dan efisiensi 39%. Hasil terbaik pada inlet pipa 200.

Method of Calculating the Forces on the 2D/3D Truss: A Review Mega Oktaviani; Delima Yanti Sari; Yolli Fernanda; Andril Arafat
MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Vol 5 No 3 (2023): Motivection : Journal of Mechanical, Electrical and Industrial Engineering
Publisher : Indonesian Mechanical Electrical and Industrial Research Society (IMEIRS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46574/motivection.v5i3.226

The truss system is the most efficient structural system, and is widely used in various forms of building contruction. In analyzing a structure there are various methods that have been used, including the stiffness matrix method and the classical mechanics method. To facilitate structure analysis can be done with the help of existing structure analysis software, such as SAP2000, Etabs, and Opensess, or by developing the Matlab programming language with a GUI. The purpose of this study is to provide a review of several calculation methods that have been used, to calculate the forces on 2D/3D truss. The research method used is a review literature that is descriptive analysis by collecting several relevant sources. In this paper, a literature review of the 2D/3D truss calculation method was carried out in terms of the calculation method and the software used. The results obtained are the stiffness matrix method which is the most popular method and has been widely used to date, because the calculation process is carried out in a systematic and patterned manner. And the application that is commonly used is Matlab, with the program validation process using SAP2000, the results of the analysis between programs show no different results. Sistem rangka batang (truss) adalah sistem struktur yang paling efisien, dan banyak digunakan dalam berbagai bentuk kontruksi bangunan. Dalam menganalisis suatu struktur terdapat bermacam-macam metode yang telah digunakan, diantaranya metode matriks kekakuan dan metode mekanika klasik. Untuk memudahkan analisis struktur dapat dilakukan dengan bantuan software analisis struktur yang telah ada, seperti SAP2000, Etabs, dan Opensess, atau dengan mengembangkan bahasa pemograman Matlab dengan GUI. Tujuan penelitian ini adalah memberikan tinjauan (review) tentang beberapa metode perhitungan yang telah digunakan, untuk menghitung gaya-gaya pada truss 2D/3D. Metode penelitian yang digunakan adalah literatur review yang bersifat analisis deskriptif dengan mengumpulkan beberapa sumber yang relevan. Dalam paper ini dilakukan kajian literatur tentang metode perhitungan truss 2D/3D dari segi metode perhitungan dan software yang digunakan. Hasil yang didapatkan yaitu Metode matriks kekakuan merupakan metode yang paling populer dan telah banyak digunakan hingga saat ini, dikarenakan proese perhitungan dilakukan secara sistematis dan terpola. Dan aplikasi yang umum digunakan adalah Matlab, dengan proses validasi program menggunakan SAP2000, hasil analisis antara program menunjukan hasil yang tidak berbeda.

Effect of Temperature and Pressure on the Density of Organic Waste Briquettes Riky Satria; Yolli Fernanda; Refdinal Refdinal; Sri Rizki Putri Primandari
MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Vol 5 No 3 (2023): Motivection : Journal of Mechanical, Electrical and Industrial Engineering
Publisher : Indonesian Mechanical Electrical and Industrial Research Society (IMEIRS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46574/motivection.v5i3.246

Organic waste is one way of utilizing biomass to produce energy. The advantage of biomass is that it tends to be renewable. The energy from biomass that will be used to make briquettes is processed and compressed into a more regular form with a high calorific value. This research will involve organic waste as a source of biomass. To obtain briquettes that are dense, tight, and in good condition, tests were conducted with various temperature and pressure settings. Organic waste with particle size between 18 and 30 mesh is used in this method. Briquetting using heat-treated molds, with temperatures of 200, 250 and 300 °C with a holding time of 5 minutes and also applying pressures of 5 MPa, 10 MPa, 15 MPa and 20 MPa. At 300 °C, 10 and 20 MPa pressure, the briquettes were dense, tight and had high density values. Sampah organik merupakan salah satu cara pemanfaatan biomassa untuk menghasilkan energi. Keuntungan dari biomassa adalah bahwa hal itu cenderung diperbaharui. Energi dari biomassa yang akan digunakan untuk membuat briket diolah dan dikompresi menjadi bentuk yang lebih teratur dengan nilai kalor yang tinggi. Penelitian ini akan melibatkan limbah sampah organik sebagai sumber biomassa. Untuk mendapatkan briket yang padat, rapat, dan dalam kondisi baik, dilakukan pengujian dengan berbagai pengaturan suhu dan tekanan. Sampah organik dengan ukuran partikel antara 18 dan 30 mesh digunakan dalam metode ini. Pembriketan menggunakan cetakan yang diberi panas, dengan suhu 200, 250 dan 300 ℃ dengan waktu penahanan 5 menit dan juga pemberian tekanan 5 MPa, 10 MPa, 15 MPa dan 20 MPa. Pada suhu 300 °C, tekanan 10 dan 20 MPa dihasilkan briket yang padat, rapat dan memiliki nilai densitas yang tinggi.

Effect of Using a Solar Can Heater Collector on the Temperature of a Room at Several External Temperature Variations Willy Vernando; Andre Kurniawan; Refdinal Refdinal; Yolli Fernanda
MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Vol 5 No 3 (2023): Motivection : Journal of Mechanical, Electrical and Industrial Engineering
Publisher : Indonesian Mechanical Electrical and Industrial Research Society (IMEIRS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46574/motivection.v5i3.281

This research discusses a heating collector device which functions to warm a room that has a relatively cold temperature so as to create thermal comfort. Thermal comfort greatly influences human performance in activities in a room so that effective performance in a room can be achieved. This collector functions to collect solar heat and increase the temperature of the sun's heat which will then be channeled into a closed room. This collector is in the form of a box measuring 750x450 mm. This collector consists of cans arranged vertically which are useful as a medium for capturing heat and increasing solar heat. The measurement results show that the room heater can warm a cold room at a temperature of 22.4⁰C to 28.2⁰C. and the air heating capacity obtained is 0.24 kJ to 4.58 kJ. Penelitian ini membahas tentang alat kolektor pemanas yang berfungsi untuk menghangatkan ruangan yang memiliki suhu relatif dingin sehingga terciptanya kenyamanan termal. Kenyamanan termal sangat berpengaruh terhadap kinerja manusia dalam beraktifitas di dalam suatu ruangan sehingga dapat tercapai efektifitas kinerja di dalam suatu ruangan. Kolektor ini berfungsi mengumpulkan panas matahari serta memperbesar suhu dari panas matahari yang nantinya akan di alirkan ke suatu ruangan yang tertutup. Kolektor ini berbentuk boks yang berukuran 750x450 mm,kolektor ini terdiri dari kaleng yang disusun secara vertical yang berguna untuk media penangkap panas dan memperbesar panas matahari. Hasil pengukuran menunjukkan bahwa pemanas ruangan dapat menghangatkan ruangan yang dingin pada suhu 22,4⁰C menjadi 28,2⁰C. dan kapasitas pemanas udara yang diperoleh adalah 0,24 kj hingga 4,58 kj.

SolidWorks Flow Simulation: Selecting the optimal mesh for conducting CFD analysis on a centrifugal fan Salmat, Salmat; Yanti Sari, Delima; Fernanda, Yolli; Prasetya, Febri
Journal of Engineering Researcher and Lecturer Vol. 2 No. 3 (2023): Regular Issue
Publisher : Researcher and Lecturer Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58712/jerel.v2i3.104

The accuracy of mesh use determines the suitability of simulation results with experimental test results, therefore it is necessary to study the type and number of mesh used for flow simulation. This study aims to investigate the type of mesh and the number of cells that are appropriately used in the simulation of centrifugal fans using the Solidworks Flow Simulation module. The research was conducted by comparing the simulation results with the experimental results on centrifugal fans that have been carried out by previous studies. In this research, the type of mesh used is global mesh. The parameter of determining the number of cells is done by varying the mesh level because the mesh level affects the number of cells. In this simulation study, the boundary condition is set to one flow volume of 5 m3/h and a rotation speed of 92.362 rad/s. In this study, the total pressure and efficiency of the centrifugal fan are the things that are seen from the comparison of flow simulation with the experiment. Based on the simulation results that have been carried out, mesh levels 1 to 4 show results that differ significantly from the experimental results. At machine levels 5 to 7, the results are close to the experimental results, but the closest total pressure and efficiency values are at mesh level 5. The results of this study can be a reference for research that simulates centrifugal fans.

Optimizing student learning in Computer Numerical Control subject: A comprehensive analysis of influential factors Fadri, Muhammad Al; A, Yufrizal; Fernanda, Yolli; Prasetya, Febri
Journal of Engineering Researcher and Lecturer Vol. 2 No. 3 (2023): Regular Issue
Publisher : Researcher and Lecturer Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58712/jerel.v2i3.114

The learning outcomes achieved by students are influenced by many factors. This study aims to determine the level of support of factors (motivation, interest, family, teacher's role, learning methods and learning facilities) that influence the learning process in achieving student learning outcomes in CNC learning in class XI. The subjects in the study were Class XI students majoring in Mechanical Engineering at SMK Negeri 5 Padang in the 2022/2023 academic year totalling 37 people. Because the number of research subjects (population) is less than 100 people, so all of them are taken as samples or total sampling. Data collection was carried out using observation, questionnaires and documentation. Data analysis techniques using descriptive statistical techniques. From the data analysis, it shows that of each factor studied, the learning facility factor has the lowest level of support for student academic success compared to other factors that have been studied by researchers. Therefore, learning facilities at SMK Negeri 5 Padang in CNC subjects need to be improved again to support the student learning process and achieve better learning achievements for students.

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

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.

Analysis of Tensile Strength the Fiber Bagasse Particles Board with Resin Adhesives Nurdin, Hendri -; Fernanda, Yolli; Handayani, Meisuri
Teknomekanik Vol. 1 No. 1 (2018): Regular Issue
Publisher : Universitas Negeri Padang

Development of the material be in the form of Particles it is possible to do so it can be an alternative to wood. Particle board is an engineered material that utilizes waste bagasse after sugar cane extraction process as an amplifier and as an adhesive used resin. Particle boards that have been produced, generally using wood powder, while the use of wood has been limited and diminished due to difficulty getting it. So the need for development in engineering the main material particle board in the form of wood powder and replace it with waste bagasse. The particle board manufacturing process is carried out by forging (compacting) between the mixture of sugarcane pulp particles and the BQTN 157 Resin adhesive. Percentage of mixed usage 50: 50 based on the fraction of weight and volume. In obtaining the mechanical properties carried out by tensile testing. From this research, the average particle pull strength is 1.81 MPa, strain 13,52% and elasticity 0,013 GPa. In obtaining particle board as an engineering material that has good ability influenced many things such as particle (mesh) raw material, adhesive use, mixed composition, the process of forging. From the characteristics of the test results obtained so that the particle board of the bagasse with resin adhesive is very possible to replace the type of particle board made from raw wood powder.

Co-Authors - Primawati A, Yufrizal Abdillah Irfan Abdu Idham Adam Mandra Suwandi Afdal Faisal Ahmed, Shabir Akbar, Arifki Akhmad Rais Ambiyar, Ambiyar Aminuyati Andika Putra ANDIKA SAPUTRA Andre Kurniawan Andre Kurniawan Andri, Junil Arafat, Andril Arwizet Arwizet Arwizet Arwizet, Arwizet Arwizet K Arwizet. K Asadellah, Dimas Pandhu Ashekul Islam Azis, Ismail Badri Kurniawan Budi Syahri Budi Syahri Delima Yanti Sari Desyandri Desyandri Devky Meinaldi Fernanda Dieter Rahmadiawan Diki Afrianto Dimas Pandhu Asadellah Dionova, Aldi Dori Yuvenda Durain Parmanoan Dwi Sakti Putra DWI SURYANTO Egis Egis Eko Indrawan Elvira Zondra, Elvira Erizon, Nelvi Fadhilah Fadhilah Fadli Ramadhan Fadri, Muhammad Al Fahrendra, Aqsal Fajar Surya Farhan Rahmat Putra Fathi Aulia DZ Febri Prasetya Felia Maresta Fido Delfri Tamasya Firma Yulianis Firman Firman Fitrah Qalbina Fitri Amelia Fonny Maswija Priscilla Fretina Sari Hadi, Farhan Handayani, Meisuri Handrianto Handrianto Haris Yuliardiansyah Ikhsan, Ghufra Irlido Irwansyah Irzal Irzal Irzal, Irzal Jasman Jasman Kandena Putra, Tegar Kiwata, Takahiro Kresna Adi Prasetya La Ode Ahmad Barata M Chalid Kurnia M. Ilham Anugrah Illahi Mega Oktaviani Mochammad Haikal Muhammad Akhbar Muhammad Al Fadri Muhammad Bayu Septian Muhammad Fadil Al Rahman Muhammad Firdaus Muhammad Ihsan Muhammad Iqbal Muhammad Raihan Muhammad Ravi Albasyit Muhammad Riski Hidayat Muhammad Shiddiq Muhammad, Maghfiridhani Mulianti Nasution, Ridhollah Nelvi Erizon Nurdin Hendri Nurwijayanti Pratomo, Muhammad Agung Primawati Primawati, Primawati Purwantono Purwantono Purwantono, Purwantono Putra, Kevinda Putra, Randi Purnama Rafki Irianto Rahmadiawan, Dieter Randi Purnama Putra Rano Hanif Refdinal Refdinal, Refdinal Refdinal, Refdinal Refitra Irawan Remon Lapisa Revaldo Nur Hidayat Rezki Alhakim Ridhatul Arif Ridhollah Nasution Riezky Hidayattullah Rifelino Rifelino Riki Saputra Riky Satria Rizki Agustian Rizki Ramadhan Nasution, Muhammad Robby, Muhammad Rudy Anarta Salmat Salmat Salmat, Salmat Seprianto, Ekon Sherly Rahmayani Shi, Shih-Chen Shih-Chen Shi Sri Riski Putri Primandari Sri Rizki Putri Primandari Syahril Syahril Syaiful Salim Teki Haryono Toto Sugiarto Usin Usin Waskito Wei-Ting Zhuang Willy Vernando Yoga Rizki Ananda Yovindra, Difa Yufrizal Yufrizal Yusmaita, Eka Zainal Abadi Zhuang, Wei-Ting Zulvani Adha

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