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All Journal Jurnal Simetris Journal of Mechanical Engineering Education (Jurnal Pendidikan Teknik Mesin) VANOS Journal of Mechanical Engineering Education Pendas : Jurnah Ilmiah Pendidikan Dasar Jurnal Dinamika Sosial Budaya Abdimas Umtas : Jurnal Pengabdian kepada Masyarakat Jurnal Engine: Energi, Manufaktur, dan Material Community Development Journal: Jurnal Pengabdian Masyarakat Journal of Mechanical and Electrical Technology Jurnal Industri dan Teknologi Samawa (JITSA) Jurnal Insinyur Profesional Jurnal Riset Rumpun Ilmu Teknik (JURRITEK) Journal Industrial Engineering and Management (JUST-ME) Journal of Artificial Intelligence and Digital Business Indonesian Journal of Multidisciplinary on Social and Technology Global Education Journal Dedicated: Journal of Community Services (Pengabdian kepada Masyarakat) Jurnal Kendali Teknik dan Sains
Tatang Permana, Tatang
Universitas Pendidikan Indonesia
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering 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 Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Other

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Analisis Postur Kerja Ergonomis pada Kegiatan Praktikum di Bengkel Otomotif UPI Riyanti Riyanti; Wahid Munawar; Tatang Permana
RIGGS: Journal of Artificial Intelligence and Digital Business Vol. 5 No. 2 (2026): Mei-Juli
Publisher : Prodi Bisnis Digital Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/riggs.v5i2.8551

Abstract

Penelitian ini bertujuan untuk menganalisis postur kerja ergonomis serta keluhan musculoskeletal disorders (MSDs) pada mahasiswa dalam kegiatan praktikum di bengkel otomotif. Penelitian ini menggunakan metode kuantitatif dengan pendekatan deskriptif untuk memberikan gambaran objektif mengenai tingkat risiko ergonomi. Subjek penelitian adalah mahasiswa Pendidikan Teknik Otomotif yang aktif mengikuti kegiatan praktikum. Pengumpulan data dilakukan melalui observasi langsung menggunakan metode Rapid Upper Limb Assessment (RULA) dan Rapid Entire Body Assessment (REBA), serta penyebaran kuesioner Nordic Musculoskeletal Questionnaire (NMQ). Hasil penelitian menunjukkan bahwa sebagian besar aktivitas praktikum dilakukan dengan postur kerja yang tidak ergonomis, seperti membungkuk, menjangkau di luar jangkauan ideal, serta bekerja dalam posisi jongkok atau di bawah kendaraan. Analisis RULA menunjukkan bahwa 65% aktivitas berada pada kategori risiko tinggi hingga sangat tinggi, sedangkan hasil REBA menunjukkan 50% aktivitas berada pada tingkat risiko sedang hingga tinggi. Selain itu, hasil NMQ menunjukkan bahwa keluhan paling dominan terjadi pada punggung bawah (70%), leher (60%), dan bahu (55%). Temuan ini menunjukkan adanya hubungan antara postur kerja yang tidak ergonomis dengan munculnya keluhan MSDs. Oleh karena itu, diperlukan upaya perbaikan melalui edukasi ergonomi, perancangan ulang fasilitas praktikum, serta pengaturan aktivitas kerja yang lebih baik. Penelitian ini menegaskan pentingnya penerapan ergonomi sejak lingkungan pendidikan untuk mencegah risiko kesehatan jangka panjang dan meningkatkan efektivitas pembelajaran.
VCO making training: Improving coconut economics and village existence in Pananjung Irma Dwi Saputri; Nadila Rifatul Karimah; Tatang Permana
Dedicated: Journal of Community Services (Pengabdian kepada Masyarakat) Vol. 2 No. 1 (2024): Dedicated: Journal of Community Services (Pengabdian kepada Masyarakat)
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/dedicated.v2i1.61847

Abstract

Coconut farming in Pananjung Village, Pangandaran, faces economic challenges due to the low market value of coconuts. To address this, the article proposes a training initiative for Virgin Coconut Oil (VCO) production, targeting PKK members. VCO, extracted at temperatures below 60°C, retains nutritional value and offers economic advantages. The training aims to empower women in the community to produce high-quality VCO efficiently. Through a descriptive research approach, the article discusses the economic potential of VCO, emphasizing its health benefits and market demand. The proposed training not only enhances VCO production skills but also contributes to the overall economic development of Pananjung Village by optimizing local resources. The successful implementation of the training is evident in the increased skills of the participants, the economic upliftment of coconut farmers, and the utilization of VCO as a valuable product. In conclusion, the training proves instrumental in improving the economic viability of coconut farming in Pananjung Village and contributes to the overall well-being and sustainability of the community.   Abstrak Pertanian kelapa di Desa Pananjung, Pangandaran, menghadapi tantangan ekonomi akibat nilai pasar kelapa yang rendah. Untuk mengatasi hal ini, artikel ini mengusulkan inisiatif pelatihan produksi Virgin Coconut Oil (VCO), dengan target anggota PKK. VCO, diekstraksi pada suhu di bawah 60°C, mempertahankan nilai gizi dan menawarkan keuntungan ekonomi. Pelatihan bertujuan memberdayakan perempuan di komunitas untuk menghasilkan VCO berkualitas tinggi secara efisien. Melalui pendekatan penelitian deskriptif, artikel membahas potensi ekonomi VCO, menekankan manfaat kesehatannya dan permintaan pasar. Pelatihan yang diusulkan tidak hanya meningkatkan keterampilan produksi VCO tetapi juga berkontribusi pada pengembangan ekonomi keseluruhan Desa Pananjung dengan mengoptimalkan sumber daya lokal. Keberhasilan pelaksanaan pelatihan terlihat dari peningkatan keterampilan peserta, peningkatan ekonomi petani kelapa, dan pemanfaatan VCO sebagai produk bernilai. Secara keseluruhan, pelatihan terbukti menjadi instrumen penting dalam meningkatkan viabilitas ekonomi pertanian kelapa di Desa Pananjung serta berkontribusi pada kesejahteraan dan keberlanjutan komunitas. Kata Kunci: Buah kelapa; KKN tematik; VCO; virgin coconut oil 
Pengaruh Oversize Terakhir Cylinder terhadap Performance Engine Type KVY Airlangga Putra; Permana, Tatang; Sukrawan, Yusep
Jurnal Kendali Teknik dan Sains Vol. 4 No. 1 (2026): Januari: Jurnal Kendali Teknik dan Sains
Publisher : International Forum of Researchers and Lecturers

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/jkts-widyakarya.v4i1.5884

Abstract

Motorcycles are one of the main modes of transportation widely used by the Indonesian people due to their practicality, efficiency, and ability to support daily mobility. However, many motorcycle users complain about the suboptimal engine power, especially when the vehicle is used on extreme terrains outside urban areas, such as uphill roads, rocky paths, or long distances. This situation has driven the development of various innovations in the automotive field to improve engine performance. One widely applied method is the oversize technique on the piston and piston block, which aims to increase the combustion chamber capacity, thereby maximizing the power output. This study aims to analyze the significant comparison of engine performance after the application of the oversize method on the KVY engine type, as well as to examine the factors influencing the optimization of engine performance based on the philosophy and needs of the vehicle owner. The testing method used a dynamometer to measure the increase in torque and engine power. The test results showed that the daily oversize application resulted in a torque increase of 1.19 Nm and a power increase of 0.85 Hp compared to the standard condition. Meanwhile, the oversize for competition needs showed more significant improvements, with a torque increase of 7.97 Nm and a power increase of 8.12 Hp. These findings demonstrate that the oversize method can significantly enhance engine performance according to its intended use.
PERILAKU MEROKOK SAAT BERKENDARA DALAM PERSPEKTIF SAFETY RIDING Muhamad Syahrul; Muhammad Setya Rifki Raharja; Tatang Permana; Wahid Munawar
Community Development Journal : Jurnal Pengabdian Masyarakat Vol. 7 No. 3 (2026): Inpress Vol. 7 No. 3 (2026)
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/cdj.v7i3.58483

Abstract

Perilaku merokok saat berkendara masih sering ditemukan di lingkungan masyarakat dan berpotensi mengganggu keselamatan berkendara. Aktivitas ini dapat mengurangi konsentrasi pengendara serta mengganggu pengguna jalan lain akibat asap dan abu rokok yang terbawa angin. Penelitian ini bertujuan untuk mengetahui pengaruh perilaku merokok saat berkendara terhadap Pemahaman safety riding pada pengendara sepeda motor. Penelitian ini menggunakan metode kuantitatif dengan teknik pengumpulan data berupa penyebaran kuesioner melalui Google Form kepada masyarakat umum. Hasil penelitian menunjukkan bahwa sebagian besar responden memahami pentingnya keselamatan berkendara, namun perilaku merokok saat berkendara masih cukup sering ditemukan di jalan raya. Mayoritas responden juga mengetahui bahwa perilaku tersebut dapat membahayakan diri sendiri maupun pengguna jalan yang lain. Selain itu, masih terdapat sebagian kecil masyarakat yang menganggap perilaku merokok saat berkendara sebagai hal yang wajar. Berdasarkan hasil penelitian, dapat disimpulkan bahwa perilaku merokok saat berkendara berpotensi mengganggu konsentrasi pengendara dan bertentangan dengan prinsip-prinsip safety riding. Oleh karena itu, diperlukan peningkatan kesadaran masyarakat mengenai pentingnya keselamatan berkendara melalui edukasi dan sosialisasi keselamatan lalu lintas.
Bullwhip Effect in Logistics: Bibliometric Analysis and Multi-Criteria Decision-Making Approaches Amelia Ghania; Tatang Permana; Hanissa Okitasari
Simetris: Jurnal Teknik Mesin, Elektro dan Ilmu Komputer Vol. 17 No. 1 (2026): JURNAL SIMETRIS VOLUME 17 NO 1 TAHUN 2026
Publisher : Fakultas Teknik Universitas Muria Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24176/simet.v17i1.16723

Abstract

Supply chains and logistics support global economy activity, where disruptions can occur in the form of demand fluctuations across multi-echelon systems, known as the bullwhip effect. Research objectives focus on analysis publications development of bullwhip effect 2020–2025 period, identifying causal factors, mitigation strategies, and determining priority mitigation recommendations. An integrated research approach is implemented through a Systematic Literature Review, bibliometric analysis, and the Fuzzy Analytical Hierarchy Process (F-AHP). Literature selection is conducted using Scopus, Taylor and Francis, Lens, OpenAlex, Dimensions AI, and Google Scholar databases. Initial identification yields 1,081 publications, from which 494 articles are selected based on defined inclusion and exclusion criteria. Bibliometric analysis is performed using RStudio and VOSviewer to examine publication trends, citation patterns, geographical distribution, and thematic structures. Expert evaluations are processed using F-AHP to prioritize mitigation strategies. Results of the literature synthesis identify five dominant bullwhip effect causal factors, including supply chain structure & policy, demand uncertainty & variability, information & ordering distortion, operational & managerial decision-making, and supply & distribution disruptions. Expert assessment identifies Policy and Coordination as the highest priority strategy, with Inventory Management, Centralization, and Decentralization as the main recommended strategy mitigation, afterward Information Sharing with Vendor Managed Inventory (VMI), Operational Strategy with Demand Forecasting, and Technology and Innovation with Digitalization. Contributions to knowledge support researchers and practitioners in strengthening supply chain resilience and sustainability also provide guidance for future research.
Analisis Regenerative Braking Motor Listrik BLDC 10 KW Menggunakan Perekam Sinyal Mobil Listrik PW 6001-16 Marcelinus Sebastian Kurniawan; Sriyono Sriyono; Ramdhani Ramdhani; Tatang Permana
Indonesian Journal of Multidisciplinary on Social and Technology Vol. 4 No. 2 (2026): Maret - Juni
Publisher : PT Ilmu Data Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69693/ijmst.v4i2.9357

Abstract

Efisiensi energi merupakan aspek krusial dalam pengembangan kendaraan listrik untuk mengoptimalkan jarak tempuh baterai. Penelitian ini bertujuan untuk menganalisis performa pengereman regeneratif (regenerative braking) pada motor listrik Brushless DC (BLDC) berdaya 10 kW menggunakan instrumen penganalisis daya presisi tinggi. Pengujian dilakukan di atas mesin chassis dynamometer (Dynojet) dengan tiga variasi simulasi beban kendaraan, yaitu tanpa penumpang, setengah penumpang, dan penuh penumpang, di mana masing-masing skenario dilakukan sebanyak tiga kali pengulangan (run) dengan interval perekaman data setiap 2 detik menggunakan Power Analyzer PW6001-16. Hasil analisis menunjukkan bahwa efisiensi pengereman regeneratif optimal justru dicapai pada kondisi setengah penumpang dengan efisiensi sebesar 14,32% dan penghematan energi rata-rata sebesar 4,44 Wh. Kondisi tanpa penumpang menghasilkan efisiensi sebesar 13,55% dengan energi regeneratif rata-rata -5,98 Wh. Sementara itu, kondisi penuh penumpang menunjukkan penurunan efisiensi yang signifikan menjadi 7,93% dengan energi regeneratif -5,32 Wh, meskipun total konsumsi energi aktifnya paling tinggi sebesar 67,13 Wh. Terjadi malfungsi pembacaan mekanis pada sensor kecepatan (RPM) selama beban penuh akibat getaran ekstrem di atas roller dyno, namun parameter kelistrikan tetap terekam secara akurat. Selain itu, ditemukan bahwa batas daya pengereman regeneratif maksimum konstan pada kisaran -1,21 kW hingga -1,23 kW di seluruh variasi pengujian sebagai bentuk proteksi sistem pengendali kendaraan. Penelitian ini menyimpulkan bahwa penambahan beban kendaraan tidak selalu meningkatkan efisiensi pengereman regeneratif karena adanya batasan torsi elektris motor dan dominasi pengereman mekanis pada beban puncak.
Analisis Kinerja Sistem Transmisi Hidrolik pada Prototipe Excavator Model Crawler Dewi Nursari; Sriyono; Tatang Permana
Jurnal Engine: Energi, Manufaktur, dan Material Vol. 10 No. 1 (2026)
Publisher : Universitas Proklamasi 45

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30588/jeemm.v10i1.2732

Abstract

The hydraulic transmission system is a key component of an excavator because it transfers fluid power from the pump to the actuators to produce working movements of the boom, arm, and bucket. This study aims to analyze the performance of the hydraulic transmission system in a crawler-type miniature excavator prototype based on working load, cylinder cross-sectional area, working pressure, cylinder speed, flow rate, and pump requirement. The research used a Research and Development (R&D) method with limited stages of define, design, development, and disseminate. The prototype was designed using CAD software, manufactured through 3D printing with PLA+ material, and equipped with a simple hydraulic system to operate the boom, arm, and bucket cylinders. The analysis was conducted by determining load distribution based on the center of gravity, calculating the force acting on each cylinder, and determining the cylinder area, working pressure, and actuator flow rate. The results showed that the boom cylinder received the highest load of 20 kg, while the arm and bucket cylinders received 10 kg and 5 kg, respectively. The boom cylinder area was 0.000314 m², while the arm and bucket cylinder areas were 0.000491 m². The required working pressures for the boom, arm, and bucket cylinders were 72 bar, 30 bar, and 20 bar, with flow rates of 0.565 lpm, 1.470 lpm, and 2.063 lpm, respectively. These results indicate that the boom cylinder is the most critical component based on pressure requirement, while the bucket cylinder determines the highest flow demand. Therefore, pump selection should consider a maximum pressure of 72 bar and a minimum flow rate of 2.063 lpm, with additional flow capacity when multiple actuators operate simultaneously.
Co-Authors A.A. Ketut Agung Cahyawan W Aam Hamdani, Aam Afroh Fauziah Agil N. Maulida, Agil N. Airlangga Putra Alimin, Fanny Noviany Alimudin, Imam A. Aliyah, Dewi Amay Suherman Amelia Ghania Arifah, Nissa Nurul Asep H. Sasmita, Asep H. Asep M. Arifin, Asep M. Audira, Ineza Nurul Ayuningtias, ulfa Febryani Baskara, Aditya Budi Kurniawan Dahtiar, Dadan Dede Suhayat, Dede Dedi Supriawan, Dedi Dewi Nursari Dinulloh, Fabela Dwi Novi Wulansari Eka A. Saefudin, Eka A. Eka Daryanto Eka Daryanto, Eka Enda Permana, Enda Faisal Rahman, Faisal Faizal, Henro N.M. Febriyani, Githa Fitri Firdaus, Faisal R. Gifari, Muhammad Maris Al Hambali, Muhammad W. Handayani, Sri Hanissa Okitasari Hasim Bisri, Hasim Hutajulu, Olnes Yosefa Ibnu Mubarak Imam Saputra Inu H Kusumah, Inu H Inu H. Kusumah, Inu H. Inu Hardi Kusumah, Inu Hardi Irma Dwi Saputri Ismiyanto, Oka Iwa Kuntadi Iwan, Dartiwan iwan Iyep Sutia Jaenudin, Asep Y. Jihad, Badru Karimah, Nadila Rifatul Khoeron, Ibnu R. Komaro, Muumu Kurniawan, Ichsan Larutama, Wiku Marcelinus Sebastian Kurniawan Mardiana, Dinny Maun Sugiarto, Maun Mubarok, Ibnu Muhamad Syahrul Muhammad Noor, Ridwan Adam Muhammad Setya Rifki Raharja Mujahidin, Zaki Ahmad Mumu Komaro Mutholib, Huda H. Nadila Rifatul Karimah Noor, R A M Noor, Ridwan A. M. Nugroho, Wisnu Y Nur Arifin, Muhammad Zaki Nurmuminah, Ina Nursalam, Muhamad Olnes Y. Hutajulu Ono Wiharna, Ono Parid, Hilman Permana, Ramdan A. Permana, Taufan R. S. Pratama, Sultan Muhammad Adi Puradimaja, Herdy RAMDHANI RAMDHANI Ramdhani Ramdhani Ramdhani, Fahmy Febi Rika Andriani Riyanti Riyanti Rizky Firmansyah Romansyah Romansyah, Romansyah Rustandi Rustandi, Rustandi Sabriyadi Sabriyadi, Sabriyadi Saepulloh, Asep R. Sagala, Robert Santoso, Yana B. Saputra, Yan Saputri, Irma Dwi Sekar A. Ningtyas, Sekar A. Shafalah, Fikry Sidiq, Hanif A Sriyono Sriyono Sriyono Sriyono, S Suharyanto H. Soro Sukandar, Aan Sukrawan, Yusep Sulaeman Sulaeman Sulaeman, Annisa Nur Fadillah Supriatna , Acep Supriatna, Acep Susanty Susanty, Susanty Suseno, Florensius P. Sutia, Iyep Sutrisno, Yohanes T.A. Syamsi, Ajie N. Taufikurachman, Indra E. Taufiq, Wildan F. Virgianto, Gunawan Wahid Munawar Warta, Waska Widyaningsih, Indri Wiranegara, Mohammad Rizky Wowo S. Kuswana, Wowo S. Yadi Supriyadi Yayu Rahayu, Yayu Yundari, Yundari Zahra, Nurbaiti Zikri, Syirojuddin