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All Journal Jurnal Teknik Mesin CIVED (Journal of Civil Engineering and Vocational Education) QALAMUNA: Jurnal Pendidikan, Sosial, dan Agama JURNAL PENDIDIKAN TAMBUSAI Jurnal Teknologi Informasi dan Pendidikan JRTI (Jurnal Riset Tindakan Indonesia) 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 Jurnal Vokasi Mekanika MASALIQ: Jurnal Pendidikan dan Sains 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 Innovation in Engineering Journal of Golden Generation Education
Delima Yanti Sari
Universitas Negeri Padang
Religion Aerospace Engineering Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Public Health Social Sciences Transportation Other

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Validasi Mesh Pada Simulasi Numerik Ground Effect Airfoil NACA 4412 Menggunakan Ansys Fluent Rizki Ramadhan Nasution, Muhammad; Yanti Sari, Delima; K, Arwizet; Fernanda, Yolli
Jurnal Pendidikan Tambusai Vol. 9 No. 1 (2025)
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jptam.v9i1.27421

Abstract

Penelitian ini membahas validasi pengaruh jenis dan jumlah mesh terhadap hasil simulasi numerik fenomena ground effect pada airfoil NACA 4412 menggunakan perangkat lunak Ansys Fluent. Simulasi dilakukan pada kondisi dua dimensi dengan variasi tiga tingkatan mesh, yaitu mesh 1 (21.230 sel), mesh 2 (100.752 sel), dan mesh 3 (221.798 sel). Tujuan utama penelitian ini adalah untuk menentukan konfigurasi mesh yang optimal berdasarkan akurasi dan efisiensi waktu komputasi, serta memvalidasi hasil simulasi terhadap data eksperimen numerik dari penelitian sebelumnya oleh (Win & Thianwiboon, 2021). Parameter yang diamati meliputi koefisien lift (Cl), koefisien drag (Cd), kontur tekanan, dan kontur kecepatan. Validasi dilakukan dengan menggunakan metode uji independensi grid. Hasil menunjukkan bahwa mesh 2 memberikan kesesuaian terbaik terhadap data eksperimen dengan error Cl sebesar 2,12% dan Cd sebesar 15%. Simulasi menunjukkan bahwa peningkatan jumlah sel tidak selalu menghasilkan akurasi yang lebih baik. Oleh karena itu, pemilihan mesh yang tepat menjadi faktor penting dalam simulasi CFD yang efisien dan akurat.
Optimization of Artec Leo 3D Scanner parameters for object accuracy using the Taguchi Method Rhionaldo, Ananda Jafron; Rifelino, Rifelino; Sari, Delima Yanti; Prasetya, Febri
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.
Effect of Weld Groove Type Variations on Deformation in Structural Carbon Steel Butt Joint Welding Using the Finite Element Method Dzaky, Muhammad Daffa; Sari, Delima Yanti; Waskito, Waskito; Adri, Junil
Jurnal Vokasi Mekanika (VoMek) Vol 7 No 3 (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.v7i3.877

Abstract

Deformation in welded joints can reduce the precision, strength, and service life of a structure, especially in structural carbon steel commonly used in the construction industry. One of the main factors influencing deformation is the type and angle of the weld groove. This study aims to analyze the effect of groove type and angle variations on deformation in butt joint welding of structural carbon steel. The method used is a numerical simulation based on the Finite Element Method (FEM) using ANSYS software, consisting of transient thermal and transient structural analyses. The groove variations include V-grooves with angles of 45°, 60°, and 75°, as well as U-grooves with angles of 50°, 60°, and 70°. The simulation results show that the V-groove with a 45° angle produces the maximum deformation of 2.1317 mm, while the U-groove with a 70° angle results in the minimum deformation of 0.23808 mm. These findings indicate that U-grooves generally produce lower deformation compared to V-grooves. Therefore, selecting the appropriate groove design can enhance the quality of weld joints and the overall structural performance.
Effect of Airfoil Profile Variations on the Rear Wing of a Racing Car on the Downforce Coefficient Using Computational Fluid Dynamics (CFD) Simulation Hendra, Carlen Muhammad; Sari, Delima Yanti; K, Arwizet; Qalbina, Fitrah
Jurnal Vokasi Mekanika (VoMek) Vol 7 No 3 (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.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.
Numerical Simulation of Natural Frequency on Shaft Using ANSYS Software Putra, Yopi Zekrri Jenizah; Sari, Delima Yanti; Waskito, Waskito; Abadi, Zainal
Jurnal Vokasi Mekanika (VoMek) Vol 7 No 3 (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.v7i3.883

Abstract

This descriptive study aims to analyze the effect of shaft diameter on the natural frequency and maximum deformation of a rotating shaft system. The analysis was conducted through numerical simulation using ANSYS Workbench software. The shaft and two symmetrically positioned disks were modeled, and a modal analysis was performed using the Finite Element Method (FEM) to determine the system’s first ten vibration modes. Simulation results showed that the natural frequencies ranged from 80.495 Hz to 280.4 Hz, with a maximum deformation of 58.903 mm occurring in the 9th mode. The lower modes (modes 1–6) exhibited lower frequencies but higher deformation, while higher modes (modes 7–10) showed more complex vibration patterns with consistently significant deformation values. This indicates that higher frequency does not necessarily result in lower deformation, and the system may still experience critical vibration. These findings demonstrate that the shaft's geometric configuration, including diameter and mass distribution of the disks, significantly affects its dynamic behavior. The simulation provides deeper insight into the vibration characteristics of the critical speed shaft apparatus used in practical experiments and serves as a reference for validating theoretical approaches such as the Dunkerley and Rayleigh methods.
Numerical Analysis of Coupled Thermal-Mechanical on Drum Brakes Fikri, Hukmanul; Sari, Delima Yanti; Waskito, Waskito; Afnison, Wanda
Jurnal Vokasi Mekanika (VoMek) Vol 7 No 3 (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.v7i3.884

Abstract

Drum brakes are one of the crucial components in motor vehicle braking systems, particularly in motorcycles, due to their advantages in production cost and resistance to environmental contamination. However, this type of brake has limitations in dissipating heat during braking, which can lead to temperature accumulation, thermal deformation, and reduced braking efficiency. This study aims to analyze the thermo-mechanical performance of drum brakes with various cooling groove designs (solid, straight-grooved, and slant-grooved) using a numerical method based on Finite Element Analysis (FEA) in ANSYS Workbench. The analysis was conducted in a transient manner, both thermally and structurally, to evaluate temperature distribution and total deformation for each design. The results show that the slant-grooved drum brake design yields the lowest temperature distribution and total deformation values, especially at high braking speeds, with a temperature distribution of 56.899 °C and total deformation of 17.67 × 10⁻³ mm. These findings indicate that groove design significantly affects the heat dissipation and structural deformation performance of the brake system. The study concludes that the slant-grooved design is superior in reducing heat and deformation, thereby offering the potential to improve braking safety and efficiency.
Experimental Study of Geometrical Accuracy of Artec Leo 3D Scanner on Complex Object Scanning Al Saidhi, Muhammad Khattami; Rifelino, Rifelino; Sari, Delima Yanti; Prasetya, Febri
Jurnal Vokasi Mekanika (VoMek) Vol 7 No 3 (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.v7i3.890

Abstract

This study aims to measure the geometrical accuracy of complex object scanning using the Artec Leo 3D scanner. The scanned object is a wheel rim, with eight combinations of parameters including variations in distance (50 cm and 100 cm), scanning angle (45° and 90°), and lighting conditions (indoor and outdoor). Deviations were measured from four reference points on the scanned model and compared to a reference model. The results show that the Indoor configuration with a scanning distance of 50 cm and a scanning angle of 90° gives the smallest deviation of 0.025 mm (0.01%), while the Outdoor configuration with a scanning distance of 50 cm and a scanning angle of 45° produces the largest deviation of -3.275 mm (-1.80%). The overall average deviation of all combinations is -0.63 mm or -0.36%, indicating that the Artec Leo can produce high accuracy if configured with the right parameters. The smallest deviation was obtained under indoor scanning conditions with a scanning distance of 50 cm and a scanning angle of 90°.
Peningkatan Produktivitas Masyarakat Tani di Nagari Bukik Sikumpa Lima Puluh Kota Melalui Penerapan Alat Pemipil Jagung Nurdin, Hendri; Waskito, Waskito; Hasanuddin, Hasanuddin; Sari, Delima Yanti
Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat Vol 21, No 1 (2021): Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/sb.0770

Abstract

Umumnya kehidupan masyarakat Indonesia dipedesaan adalah bercocok tanam padi yang merupakan sektor pertanian, selain itu ada juga yang berladang jagung. Tanaman jagung merupakan tanaman pangan nasional kedua setelah padi. Jagung sebagai pakan ternak, memiliki pangsa pasar tersendiri di tengah masyarakat sehingga nilai komoditas pasarnya sangat baik. Dampak kondisi ini yang membuat kekuatan bisnis jagung menjadi sangat menguntungkan sehingga masyarakat beralih menanam jagung. Berdasarkan hasil survei dan diskusi dengan kelompok tani Mawar di Nagari Bukik Sikumpa Limapuluh Kota yang sebagian besar masyarakatnya berkehidupan sebagai petani. Perkebunan di Nagari ini lebih cenderung kepada tanaman jagung dikarenakan lebih memilih dalam perawatannya dan harga pasar yang lebih stabil (harga jagung Rp 3.700 per kilogram). Masa pertumbuhan jagung sampai dapat di panen hanya membutuhkan waktu ± 4 bulan. Permasalahan yang terjadi di masyarakat menyangkut dengan proses pemipilan jagung setelah panen. Masyarakat petani kesulitan melakukan proses pengolahan jagung setelah di panen diantaranya mulai dari pengupasan kulit jagung, pemipilan butir jagung, dan penggilingan butir jagung. Biasanya masyarakat petani melakukan proses pengolahan secara manual dengan pekerjaan tangan sehingga membutuhkan waktu yang lama dan melibatkan banyak pekerja dengan pembiayaan upah yang besar. Penerapan teknologi berupa rancang bangun alat pemipil jagung yang disampaikan ke masyarakat petani sebagai upaya meningkatkan produktivitas sehingga berdampak terhadap kesejahteraan dan membangun wawasan masyarakat menjadi sasaran dalam kegiatan program kemitraan masyarakat.
Optimalisasi Penerapan Alat Pemipil Jagung Untuk Meningkatkan Produktifitas Masyarakat Di Nagari Sungai Rimbang Nurdin, Hendri -; Sari, Delima Yanti; Waskito, Waskito
Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat Vol 21, No 3 (2021): Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/sb.01690

Abstract

Dalam industri pengolahan pakan ternak, jagung merupakan bahan pokok yang mempunyai nilai ekonomis sangat tinggi. Jagung sebagai pakan ternak, memiliki pangsa pasar tersendiri di tengah masyarakat sehingga nilai komoditas pasarnya sangat baik. Kelompok tani Tampuniak Serumpun di Nagari Sungai Rimbang Kecamatan Suliki Lima Puluh Kota yang sebagian besar masyarakatnya berkehidupan sebagai petani. Permasalahan yang terjadi menyangkut dengan proses pemipilan jagung setelah panen. Masyarakat petani kesulitan melakukan proses pengolahan jagung setelah di panen diantaranya mulai dari pengupasan kulit jagung, pemipilan butir jagung, dan penggilingan butir jagung. Biasanya masyarakat petani melakukan proses pengolahan secara manual dengan cara dicungkil saja sehingga membutuhkan waktu yang lama dan melibatkan banyak pekerja dengan pembiayaan upah yang besar. Sentuhan teknologi di masyarakat dalam mengolah hasil panen jagung belum termanfaatkan secara optimal. Teknologi alat pemipil jagung yang diterapkan ke masyarakat sangat efisien. Kapasitas alat pemipil jagung dapat melakukan kerja sebanyak 433 kg/jam dimana penggerak yang digunakan motor bensin 6,5 PK dengan putaran 3600 rpm.. Efektifitas alat pemipil jagung dalam menghasilkan produksi dengan keutuhan butiran jagung hasil pemipilan mencapai 95 %. Optimalisasi penerapan alat pemipil jagung ini berdampak terhadap peningkatan produktivitas dan kesejahteraan hidup masyarakat di Nagari Sungai Rimbang sehingga kondisi ini dapat dipertahankan sinergi keberlanjutannya oleh masyarakat.
Implementasi Model Pembelajaran Kooperatif Tipe TAI untuk Meningkatkan Kompetensi 4C dan Hasil Belajar Siswa pada Mata Pelajaran Skmi Kelas XI TMI 1 SMK Negeri 1 Pariaman Agusriza Almalik; Yufrizal A; Arwizet K; Delima Yanti Sari
Venus: Jurnal Publikasi Rumpun Ilmu Teknik  Vol. 3 No. 5 (2025): Venus: Jurnal Publikasi Rumpun Ilmu Teknik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/venus.v3i5.1139

Abstract

This research addresses the low student learning outcomes and the lack of facilitation of 4C competencies (Critical Thinking, Collaboration, Communication, and Creativity) in the Industrial Machine Electrical Systems (SKMI) subject for Grade XI TMI 1 students at SMK Negeri 1 Pariaman. The teacher-centered learning approach has led to passive student participation, low critical thinking, varying academic abilities, and difficulty in connecting theoretical concepts to real-life applications. The aim of this study is to improve students' 4C competencies and learning outcomes through the implementation of the Team Assisted Individualization (TAI) cooperative learning model. Using Classroom Action Research (CAR) based on the Kemmis and McTaggart model, the study was conducted in three cycles: planning, implementation, observation, and reflection. The subjects were 30 students from Grade XI TMI 1. Data collection included learning outcome tests and 4C competency observation sheets, with descriptive and quantitative data analysis. The results showed significant improvements: classical mastery increased from 27% to 90%, average learning scores rose from 67 to 81, and 4C competency mastery improved from 34% (low) to 82% (high). The study concludes that the TAI model effectively enhances both 4C competencies and learning outcomes in SKMI at SMK Negeri 1 Pariaman.
Co-Authors - Primawati Abd Aziz Abdul Aziz Abdul Aziz Abdullah, Adlan Azmi Adityo Adityo, Adityo Afdal Dinilhaq Agusriza Almalik Akbar, M. William Akram Ramadhan Al Afif Attorik Al Saidhi, Muhammad Khattami Alfian Barwan, Esco Altarisi, Muhammad Athar Ambiyar, Ambiyar Aminuyati Andika Putra Andira, Muhammad Fadil Andre Kurniawan Andre Kurniawan Andri, Suci Arafat, Andril Arfan Iswanda Arwizet Arwizet, Arwizet Asnil Asnil Azmul Fauzi Bakar, Muhammad Jamil Budi Syahri Bulkia Rahim Delfisanur Delfisanur Deswina, Melri Dinilhaq, Afdal Dori Yuvenda Dwi Sakti Putra Dzaky, Muhammad Daffa Efendi, Fiki Efendi EKA RAHAYU Eko Indrawan Elmoudi, Muhammad Fatiy Ema Wulansari, Rizky Erika Afandi Fadillah, Fikri Fahrezi, Rangga Ashar Faisal Gustianto Fajero Tiffano Farid Permata Putra Fattahul Rizki Fauza, Anna Niska Febri Prasetya Fenda Lisman Fiki Efendi Fikri, Hukmanul Fikri, M Fitrah Qalbina Hafizd Furqon Hamizum, Bestra Hasanuddin Hasanuddin Hasanuddin Hasanuddin Hasanuddin WS Hendra, Carlen Muhammad Hendri Nurdin Hesty Kumala Sani Irshan Sepriza Irzal Irzal Irzal Irzal Jasman Jasman Julian Berlin Roland Tobing Junil Adri Junil Ardi Kelvin Rahmat Syah M Febriyan Baruna Putra Maulana Rafi, Ikhsan Mega Oktaviani Miftahul Fikri Milana Milana Mochammad Imron Awalludin Muhammad Aulia Anugrah Muhammad Azim Muhammad Farhan Muhammad Iqbal Iski 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 Pasaribu, Reynaldy Peri Irawan Primawati Primawati Purwantono Purwantono purwantono purwantono Purwantono, Purwantono Putra, Nandri Pratama Putra, Syafriade Putra, Yopi Zekrri Jenizah Rachman Setiawan Rahmadiawan, Dieter Rasyid Ridho Harahap Refdinal Refdinal Refdinal, Refdinal Remon Lapisa Remon Lapisa Resti Apriliyanti Rhionaldo, Ananda Jafron Richardo, Richardo Ricky Andrianto Rifelino Rifelino Rihan Salim, Muhamad Rilgy Aulia Rizki Ramadhan Nasution, Muhammad Rodesri Mulyadi Salmat, Salmat Sani, Hesty Kumala Santoso, Bagas Saputra, Ilham Dwi Satria, Andam Sigit Dwi Lesmana Silfi Chorillah Putri Siregar, Batu Mahadi Sukardi Sukardi Sukardi, Sukardi Tasyah Tasyah Utama, Alparis Nico Putra Utami, Fathya Suci Wagino Wahyudi Wahyudi Wanda Afnison Waskito Waskito Waskito Waskito Waskito Waskito, Waskito Willyardo Putra Ramon Yolli Fernanda Yopi Zekri Jenizah Putra Yufrizal Yufrizal A Yufrizal Yufrizal Zainal Abadi Zuanda Maulana Nasution