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All Journal Jurnal Teknik Mesin CIVED (Journal of Civil Engineering and Vocational Education) QALAMUNA: Jurnal Pendidikan, Sosial, dan Agama INVOTEK: Jurnal Inovasi Vokasional dan Teknologi JURNAL PENDIDIKAN TAMBUSAI Jurnal Teknologi Informasi dan Pendidikan MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat GANDRUNG: Jurnal Pengabdian Kepada Masyarakat Teknomekanik Ideguru: Jurnal Karya Ilmiah Guru Vocational : Jurnal Inovasi Pendidikan Kejuruan Jurnal Vokasi Mekanika Al-Alam : Islamic Natural Science Education Journal Tsaqofah: Jurnal Penelitian Guru Indonesia MASALIQ: Jurnal Pendidikan dan Sains DEVOTE: Jurnal Pengabdian Masyarakat Global 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 Journal of Innovative and Creativity Journal of Civil Engineering and Vocational Education Venus: Jurnal Publikasi Rumpun Ilmu Teknik Journal of Golden Generation Education JRTI (Jurnal Riset Tindakan Indonesia)
Delima Yanti Sari
Universitas Negeri Padang
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PENGEMBANGAN E-MODUL PADA MATA PELAJARAN TEKNIK GAMBAR MANUFAKTUR DI SMKS DHUAFA PADANG Syafriade Putra; Eko Indrawan; Delima Yanti Sari
Jurnal Vokasi Mekanika (VoMek) Vol 6 No 4 (2024): Jurnal Vokasi Mekanika
Publisher : Unversitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/vomek.v6i4.741

Abstract

The learning media used previously for the Manufacturing Drawing Technique subject in class XI of Machining Engineering has not been optimal in achieving learning objectives. Therefore, this research aims to develop e-modules as learning media at SMKS Dhuafa Padang. The research used an R&D development model in education based on the IDI model, which was carried out in the odd semester of FY 2023/2024. The IDI model includes three stages: determination, development, and assessment. Data were collected through a validation sheet in the form of a questionnaire and analyzed with quantitative descriptive statistics. The results showed that this e-module was feasible to use as an independent learning media with a final validity value of 0.83 from material experts and 0.90 from media experts, which met the valid criteria. The e-module practicality test showed very practical results, with an average percentage value of 93.6% from the teacher's assessment. The use of this e-module is expected to provide several significant advantages for the learning process. First, this e-module allows more flexible access to learning for students, allowing them to learn anytime and anywhere at their convenience. Secondly, interactive and engaging e-modules are expected to increase students' motivation and interest in learning. Thus, this e-module not only helps students understand the subject matter better but also supports the development of self-learning skills essential for long-term academic success.
PENGGUNAAN MEDIA AUDIO VISUAL PADA MATA PELAJARAN PENGETAHUAN DASAR TEKNIK MESIN DI KELAS X SMK NEGERI 5 PADANG Fikri Fadillah; Refdinal Refdinal; Delima Yanti Sari; Fiki Efendi
Jurnal Vokasi Mekanika (VoMek) Vol 6 No 4 (2024): Jurnal Vokasi Mekanika
Publisher : Unversitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/vomek.v6i4.764

Abstract

Social media is widely used in education for various learning activities, such as searching for educational materials, using it as a tool, giving assignments, participating in discussion forums, and many more. Optimizing learning outcomes is the goal of using social media in the classroom. Online communities, bloggers, social media, wikis, forums and virtual worlds are examples of social media platforms where users can interact, share and create content easily. This study aims to introduce social media as a teaching aid in the subject of basic knowledge of mechanical engineering (PDTM), Department of Machining Engineering Class X, State Vocational High School 5 Padang. A total of 32 class x students Department of Mechanical Engineering participated in the study January-June 2023/2024 school year. The results showed an increase from pre test to post test. In the pre-test value obtained a value of 74.422 and the post-test learning outcomes were 79.79, this. This proves that, there is a difference between learning outcomes that use audio visual media and do not use audio visual media at State Vocational High School 5 Padang.
ANALISIS PENGEMBANGAN MEDIA PEMBELAJARAN E-MODUL PADA MATA PELAJARAN TEKNIK PEMESINAN BUBUT DI SMKS DHUAFA PADANG Richardo Richardo; Budi Syahri; Purwantono Purwantono; Delima Yanti Sari
Jurnal Vokasi Mekanika (VoMek) Vol 6 No 4 (2024): Jurnal Vokasi Mekanika
Publisher : Unversitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/vomek.v6i4.771

Abstract

The role of education is crucial in individual self-development to overcome faced challenges. The learning process is a fundamental means to enhance this educational role. However, to support an effective learning process, appropriate media is needed to ensure that information received by students is more easily understood. At SMKS Dhuafa Padang, for the lathe machining technique subject, learning media is still limited to whiteboards, textbooks, and PowerPoint presentations, which create student dependency on teachers. The lack of visualization in learning results in students having difficulty understanding the material. Therefore, E-modules become a solution to improve the quality of lathe machining technique learning. E-modules allow students to learn independently with neatly and systematically arranged material, stronger visualization, and interactivity. In conducting this research, the researcher used a Research and Development (R&D) approach and employed the Instructional Development Institute (IDI) development procedure, which has three steps: Define (needs analysis), Develop (e-module media design), and Evaluate (Validity Evaluation). The research instrument used questionnaires filled out by validators (teachers and lecturers), and the research results showed a score of 0.925 for material validity and 0.903 for media validity, indicating that this e-module media is feasible and valid for application as learning media. It is hoped that with the existence of this E-module, it can be utilized as additional learning media in the Lathe Machining Technique learning process.
Analisis Pengaruh Model Turbulen dalam Simulasi CFD Centrifugal Fan menggunakkan Ansys Bagas Santoso; Delima Yanti Sari; Hendri Nurdin; Fitrah Qalbina
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.v7i1.811

Abstract

The study was conducted to determine the airflow in the backward type centrifugal fan using Computational Fluid Dynamics (CFD) simulation. This type of fan is often used in various industries due to its high efficiency in moving air or gas. In CFD simulation, the selection of the right turbulent model is very important to obtain simulation results that are reliable, efficient, and relevant to real conditions. The study used four different turbulent models to look at their effects on pressure distribution, flow velocity, and fan efficiency. The turbulent models used are k-? Standard, k-? RNG, k-? Realizable and k-? SST. The goal was to find the most optimal turbulent model of the centrifugal fan around the impeller. The impeller has an angle (,?-1.) of 35,260 with a rotation speed of 301,069 rad/s. The simulation was carried out by meshing about 500,000 mesh elements for a balance between accuracy and computing needs. Validation was carried out by comparing the simulation results of Ansys Student R1 2024 and Solidwork. Of the four turbulent models tested, k-? RNG provided the most accurate results, with an efficiency difference of only 1.3% compared to Solidworks. This model manages to capture better variations in pressure and flow velocity, especially in turbulent areas and around the impeller. These results show that the k-? RNG turbulent model provides closer results than other models. These findings are important for the optimization of centrifugal fan design and emphasize the importance of selecting the right turbulent model in numerical simulations.
Analisis Natural Frequency pada Struktur Engine Mounting dengan Solidworks Research License 2021-2022 Reynaldy Pasaribu; Delima Yanti Sari; Waskito Waskito; Arwizet K
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.v7i1.814

Abstract

Engine Mounting atau dudukan mesin merupakan komponen penting yang terdapat pada mesin pembakaran dalam maupun mesin pembakaran luar yang memiliki fungsi untuk meredam getaran maupun kebisingan, dan menahan beban mesin. Setiap mesin pembakaran dalam tidak terlepas dari yang namanya getaran atau vibrasi, hal ini karena pada umumnya mesin pembakaran dalam menghasilkan gerak rotasi dan mengalami siklus berulang. Jika vibrasi sudah memasuki Natural Frequency dari suatu struktur bagian mesin, maka akan dapat menimbulkan kerusakan terhadap struktur komponen-komponen mesin. Natural frequency suatu objek tergantung pada karakteristik fisiknya seperti massa dan kekakuannya. Dalam penelitian ini bertujuan untuk mengetahui modus getar, dan nilai natural frequency dari engine mounting, hal ini sangat penting dilakukan untuk mencegah terjadinya resonansi pada engine mounting. Dalam penelitian ini model tiga dimensi struktur engine mounting dibuat menggunakan perangkat lunak CAD (Computer Aided Design) yaitu Solidworks Research License 2021-2022, dan prosedur yang digunakan dalam penelitian ini adalah FEA (Finite Element Analysis) pada software Solidworks Research License 2021-2022. Simulasi dilakukan dengan meshing sekitar 65.591 element mesh hasil simulasi solidworks menunjukkan bahwa natural frequency engine mounting berkisar antara 37,40 Hz hingga 177,28 Hz, dengan displacement maximum mencapai 0,562 dalam keterangan AMPRES pada modus 8. Temuan ini menegaskan pentingnya memilih frekuensi kerja mesin agar tidak berdekatan dengan natural frequency engine mounting. Selain itu, respon dinamis displacement maximum manunjukkan, perlunya perancangan yang cermat untuk mengurangi dampak vibrasi pada kinerja mesin. Penelitian lebih lanjut sebaiknya fokus pada pengembangan material dan desain yang dapat meminimalkan displacement maximum serta meningkatkan stabilitas struktur engine mounting
Analisis Kekuatan dan Deformasi Rangka Tubular Space Frame Mobil Listrik Megathrust Electric dengan Variasi Dimensi Serta Material Menggunakan Metode Finite Element Analysis (FEA) Adityo Adityo; Wanda Afnison; Waskito Waskito; Delima Yanti Sari
Jurnal Vokasi Mekanika (VoMek) Vol 7 No 4 (2025): Jurnal Vokasi Mekanika
Publisher : Unversitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/vomek.v7i4.894

Abstract

The development of electric vehicles in Indonesia has grown rapidly, supported by the Indonesian Electric Car Competition (KMLI) which encourages innovation in designing lightweight yet strong vehicle frames. The tubular space frame of the “Megathrust Electric” car previously used ASTM A36 steel with a total weight of 32 kg, which was considered inefficient as it increased power consumption and reduced overall performance. This study aims to analyze the effect of pipe dimension variations and alternative materials, namely Aluminium alloy 6061 and 6063, on the strength and deformation of the frame. The method employed is Finite Element Analysis (FEA) using SolidWorks software under static loading conditions that represent real operating scenarios. The pipe variations examined include 19.05 mm diameter with 2.5 mm thickness and 25.4 mm diameter with 2 mm thickness. The simulation results show that the 25.4 × 2 mm Aluminium alloy 6061 configuration provides the best structural performance with a maximum stress of 55.07 MPa, deformation of 1.583 mm, and a safety factor (FOS) of 5.012. In contrast, the 19.05 × 2.5 mm Aluminium alloy 6063 configuration is lighter but exhibits higher stress (184.4 MPa) and a lower safety factor (1.161). Therefore, the Aluminium Alloy 6061 pipe with 25.4 mm diameter is recommended as the optimal frame design, offering a balance between strength, stiffness, and weight efficiency to support the performance of electric vehicles in competition.
Efektivitas Metode Drill Dalam Meningkatkan Hasil Belajar Siswa Kelas X Teknik Pemesinan Pada Mata Pelajaran Dasar Program Keahlian Di Smk Negeri 5 Padang mudhya_amalia afriardhy; rizky ema wulansari; Mulianti Mulianti; Delima Yanti Sari
Al-Alam: Islamic Science Education Journal Vol 5 No 1 (2026): (Edisi Januari) Inovasi Pembelajaran IPA
Publisher : LP2M UIN Ambon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33477/al-alam.v5i1.14064

Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh metode latihan (drill) terhadap hasil belajar siswa pada mata pelajaran Program Vokasi Dasar di SMK Negeri 5 Padang. Penelitian ini menggunakan pendekatan kuantitatif dengan desain kuasi-eksperimental, khususnya Desain Kelompok Kontrol Tidak Setara (Nonequivalent Control Group Design). Sampel terdiri dari 70 siswa yang dibagi menjadi kelas eksperimen dan kelas kontrol. Data dikumpulkan melalui pretest dan posttest, dan dianalisis menggunakan uji normalitas, uji homogenitas, dan Uji T Sampel Independen. Hasil penelitian menunjukkan bahwa rata-rata skor posttest kelas eksperimen (78,57) lebih tinggi daripada kelas kontrol (63,06). Uji hipotesis menunjukkan bahwa nilai signifikansi (Sig. 2-tailed) kurang dari 0,05, artinya metode latihan (drill) berpengaruh signifikan terhadap hasil belajar siswa. Oleh karena itu, metode latihan (drill) efektif dalam meningkatkan hasil belajar siswa, terutama pada materi berbasis keterampilan praktik.
SolidWorks Flow Simulation: Selecting the optimal mesh for conducting CFD analysis on a centrifugal fan Salmat Salmat; Delima Yanti Sari; Yolli Fernanda; Febri Prasetya
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

Abstract

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.
Optimization of Artec Leo 3D Scanner parameters for object accuracy using the Taguchi Method Ananda Jafron Rhionaldo; Rifelino Rifelino; Delima Yanti Sari; Febri Prasetya
Journal of Engineering Researcher and Lecturer Vol. 4 No. 2 (2025): Regular Issue
Publisher : Researcher and Lecturer Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58712/jerel.v4i2.186

Abstract

This study focuses on optimizing the scanning parameters of the Artec Leo 3D Scanner to enhance scanning accuracy by minimizing geometric deviations. The experimental design utilizes the Taguchi L4(2³) orthogonal array method to examine the influence of three scanning factors: distance, angle, and lighting at two levels. A 16-inch car wheel, chosen for its geometric complexity, was scanned under various parameter combinations. The results indicated that the combination of indoor lighting, a 45° angle, and a scanning distance of 100 cm yielded the smallest deviation (0.5%) and the highest signal-to-noise (S/N) ratio (6.02 dB). Analysis of variance (ANOVA) revealed that the scanning distance contributed the most to the variation in scanning accuracy (65.09%), followed by lighting (34.64%) and angle (0.27%). A confirmation test with the optimal parameters further reduced the deviation to 0.4%, validating the effectiveness of the Taguchi method for parameter optimization. This study’s findings contribute valuable insights for industries that require high-precision 3D models, such as aerospace, automotive, and healthcare. The research demonstrates the importance of optimizing scanning parameters and offers a practical approach to improving 3D scanning processes. Future research can expand by exploring environmental conditions, scan resolution, and machine learning integration for real-time adjustments.
Comparative static structural assessment of an energy-efficient prototype vehicle chassis using finite element analysis: AISI 1020 steel vs. 6061-T6 aluminum Muhammad Fadil Andira; Wanda Afnison; Waskito Waskito; Delima Yanti Sari
Journal of Engineering Researcher and Lecturer Vol. 4 No. 3 (2025): Regular Issue
Publisher : Researcher and Lecturer Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58712/jerel.v4i3.199

Abstract

This study evaluates the static structural performance of a Prototype-class energy-efficient vehicle chassis for the Indonesian Kontes Mobil Hemat Energi (KMHE; Energy-Efficient Car Competition) by comparing two material options, AISI 1020 carbon steel and Al 6061-T6, under a consistent load representation. Three-dimensional chassis models were developed in SolidWorks and assessed using static finite element analysis (FEA). The loading scenario included gravitational body force and two concentrated static loads representing operational conditions: 700 N applied at the driver seat region and 300 N applied at the engine mounting area. A curvature-based meshing strategy was adopted, with element sizes ranging from 1.6 to 8 mm, resulting in approximately 1,700,093 nodes to capture geometric details in joints and curved members. The AISI 1020 chassis produced a maximum von Mises stress of 278.6 MPa concentrated near the engine mounting joint, a maximum total deformation of 2.1 mm in the roll-bar region, and a minimum factor of safety of 1.3. In contrast, the Al 6061-T6 chassis exhibited a lower peak stress of 61 MPa at the rear wheel mounting region, a higher deformation of 3.4 mm at the roll bar, and a factor of safety of 4.5. The findings confirm a trade-off between stiffness and safety margin: steel offers higher stiffness but an insufficient safety margin, while aluminium significantly improves the static safety margin with increased deformation. These results provide design guidance for reinforcing critical regions and enhancing the robustness of competition-ready chassis.
Co-Authors - Primawati Abd Aziz Abdul Aziz Aditia Pratama Adityo Adityo Adlan Azmi Abdullah Afdal Dinilhaq Afferli Seftian Agusriza Almalik Akbar, M. William Akram Ramadhan Al Afif Attorik Alfian Barwan, Esco Alparis Nico Putra Utama Altarisi, Muhammad Athar Ambiyar, Ambiyar Aminuyati Ananda Jafron Rhionaldo Andika Putra Andre Kurniawan Andre Kurniawan Angga Hermawansyah Anna Niska Fauza Arafat, Andril Arfan Iswanda Arwizet Arwizet, Arwizet Asnil Asnil Azmul Fauzi Bagas Santoso Bagas Santoso Bakar, Muhammad Jamil Bestra Hamizum Budi Syahri Bulkia Rahim Carlen Muhammad Hendra Dani Harmanto Delfisanur Delfisanur Dieter Rahmadiawan Dinilhaq, Afdal Dori Yuvenda Dwi Sakti Putra Efendi, Fiki Efendi EKA RAHAYU Eko Indrawan Elmoudi, Muhammad Fatiy Ema Wulansari, Rizky Erika Afandi Fahrezi, Rangga Ashar Faisal Gustianto Fajero Tiffano Farid Permata Putra Fattahul Rizki Febri Prasetya Fenda Lisman Fiki Efendi Fikri Fadillah Fitrah Qalbina Fitrah Qalbina Gilang Ramadhan Hafizd Furqon Hasanuddin Hasanuddin Hasanuddin WS Hastuti Hastuti Hastuti Hastuti Hesty Kumala Sani Hukmanul Fikri Iqbal Danuarta Irshan Sepriza Irzal Irzal Jasman Julian Berlin Roland Tobing Junil Adri Junil Ardi Kelvin Rahmat Syah M Febriyan Baruna Putra M Fikri Maulana Rafi, Ikhsan Mega Oktaviani Melri Deswina Mhd. Fahri Meihanda Putra Miftahul Fikri Milana Milana mudhya_amalia afriardhy Muhammad Aulia Anugrah Muhammad Azim Muhammad Daffa Dzaky Muhammad Fadil Andira Muhammad Farhan Muhammad Iqbal Iski Muhammad Khattami Al Saidhi Muhammad Rizki Muhammad Rizki Anshari Muhammad Zainul Hasan Muklis Muklis Mulianti Mulianti Mulyadi Mulyadi Nabawi, Rahmat Azis Nelvi Erizon Nizwardi Jalinus Nurdin Hendri Nurwijayanti Oki Darwis Prima Putra Okky Syaifatul, Achmad Peri Irawan Purwantono Purwantono Purwantono, Purwantono Putra, Nandri Pratama Putra, Romi Rachman Setiawan Rasyid Ridho Harahap Refdinal, Refdinal Remon Lapisa Remon Lapisa Resti Apriliyanti Reynaldy Pasaribu Rhionaldo, Ananda Jafron Richardo Richardo Ricky Andrianto Rifelino Rifelino Rifelino Rihan Salim, Muhamad Rilgy Aulia Rizki Ramadhan Nasution, Muhammad Rizky Ema Wulansari Rodesri Mulyadi Salmat Salmat Salmat, Salmat Sani, Hesty Kumala Saputra, Ilham Dwi Satria, Andam Sigit Dwi Lesmana Silfi Chorillah Putri Siregar, Batu Mahadi Suci Andri Sudjono, Aldo Alfattah Sukardi Sukardi Sukardi, Sukardi Syafriade Putra Syahril Syahril Syahril Syahril Tasyah Tasyah Toto Sugiarto Tsung-Liang Wu Utami, Fathya Suci Wagino Wahyudi Wahyudi Wanda Afnison Waskito Waskito Waskito Waskito, Waskito Willyardo Putra Ramon Wulansari, Rizky Ema Yolli Fernanda Yopi Zekri Jenizah Putra Yopi Zekrri Jenizah Putra Yufrizal Yufrizal A Yufrizal Yufrizal Zainal Abadi Zainal Abadi Zuanda Maulana Nasution