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All Journal JOURNAL OF ELECTRICAL AND SYSTEM CONTROL ENGINEERING Jurnal Abdi Ilmu Vocatech : Vocational Education and Technology Journal Indonesian Journal of Electrical Engineering and Computer Science G-Tech : Jurnal Teknologi Terapan Sprocket : Journal of Mechanical Engineering Jurnal Scientia Jurnal VORTEKS Jurnal Pengabdian kepada Masyarakat Journal of Vision and Ideas (VISA) Jurnal Derma Pengabdian Dosen Perguruan Tinggi (Jurnal DEPUTI) Journal of Innovation Research and Knowledge Jurnal Pengabdian Mandiri Elektriese: Jurnal Sains dan Teknologi Elektro Blend Sains Jurnal Teknik Engineering and Technology International Journal (EATIJ) Populer: Jurnal Penelitian Mahasiswa Jurnal Manajemen Rekayasa dan Inovasi Bisnis Jurnal Pengabdian Masyarakat Bangsa Recent in Engineering Science and Technology
Nabila Yudisha
Politeknik Negeri Jakarta
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ANALISIS BEBAN KERJA DENGAN METODE RULA PADA DIVISI PEMINDAHAN BARANG DI PT. NUSANTARA CARD SEMESTA CABANG MEDAN Ardiansyah Tanjung; Nabila Yudisha; M. Fiza Lubis
Journal of Innovation Research and Knowledge Vol. 5 No. 8 (2026): Januari 2026
Publisher : Bajang Institute

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Abstract

PT. Nusantara Card Semesta is a company engaged in the delivery of goods that cannot be separated from problems related to work postures. This can be seen by the wrong posture and working methods of the workers in the transfer of goods division which can result in muculoskeletal injuries, thereby reducing work productivity. Therefore, it is necessary to analyze the workload of workers in the transfer of goods division to obtain an effective work posture in doing work so that an employee can carry out his work activities according to his ability or work capacity. Rapid Upper Limb Assessment (RULA) is a method to assess posture, style, and movement of a work activity related to the use of the upper body (upper limb). This method was developed to investigate the risk of abnormalities that will be experienced by a worker in carrying out work activities that utilize the upper limb. The first step in analyzing the workload using the RULA method is to analyze the current work posture, which is then followed by an analysis of the work postures that can cause injury. After obtaining a work posture that can cause injury, problem solving is carried out with a proposed design of a work posture that is comfortable and does not cause injury. The conclusion that can be drawn from the workload analysis using the RULA method is that the work posture that has the highest risk is the work posture of lifting goods from the warehouse to the transport truck. This condition shows that the work posture in the moving goods division has a very large risk of abnormalities that can result in musculoskeletal injuries so that it can reduce work productivity. Keywords: RULA, musculoskeletal, workload analysis
Analisis Pengaruh Parameter Mesin Cnc Laser Cutting terhadap Waktu dan Akurasi Dimensi Maladzi, Radhi; Putra, Rama Ardiansyah; Matsaany, Bayun; Yudisha, Nabila
VOCATECH: Vocational Education and Technology Journal Vol 7, No 2 (2025): December
Publisher : Akademi Komunitas Negeri Aceh Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38038/vocatech.v7i2.257

Abstract

AbstractThe manufacturing industry plays a vital role in supporting economic growth but often faces operational inefficiencies, particularly in the production process. PT XYZ, a leading steel manufacturing company in Indonesia, utilizes a CNC laser cutting machine model 3015H to produce components made from SS400 material. A high defect rate in cutting 2 mm thick SS400 plates indicates inefficiencies that require further investigation. This study aims to analyze the effects of cutting speed, laser height distance, and gas pressure on cutting time efficiency and dimensional accuracy. The research employs the Taguchi method for experimental design, Grey Relational Analysis (GRA) for multi-response optimization, and MANOVA to determine the simultaneous significance of the process parameters. The results show that the optimal parameter combination for cutting time and dimensional accuracy is achieved at a cutting speed of 1.8 m/min, a laser height of 0.8 mm, and a gas pressure of 0.8 bar. Cutting speed was the most dominant factor affecting cutting time efficiency, with the fastest time recorded at 25.26 seconds and the highest delta value. Gas pressure had the most significant effect on dimensional accuracy, producing the smallest deviation of 0.0567 mm. MANOVA results indicated that all three parameters had a significant multivariate effect (p 0.05), but only cutting time was significantly affected in the univariate test. In conclusion, proper process parameter settings can enhance cutting efficiency without compromising accuracy. These findings are expected to support technical decision-making to improve productivity at PT XYZ.Keywords:cnc laser cutting; ss400; taguchi; grey relational analysis; manova  AbstrakIndustri manufaktur merupakan sektor penting yang menopang pertumbuhan ekonomi, namun dalam praktiknya sering menghadapi tantangan berupa ketidakefisienan operasional, khususnya dalam proses produksi. PT XYZ sebagai perusahaan produsen baja terkemuka di Indonesia menggunakan mesin CNC laser cutting tipe 3015H dalam produksi produk berbahan SS400. Tingginya tingkat cacat pada proses pemotongan material SS400 ketebalan 2 mm menunjukkan adanya ketidakefisienan yang perlu diteliti lebih lanjut. Penelitian ini bertujuan untuk menganalisis pengaruh parameter proses kecepatan potong, jarak ketinggian laser, dan tekanan gas terhadap efisiensi waktu dan akurasi dimensi hasil potongan. Penelitian menggunakan metode Taguchi untuk desain eksperimen, grey relational analysis (GRA) untuk optimasi multi-respon, dan uji MANOVA untuk mengetahui signifikansi pengaruh secara simultan. Hasil penelitian menunjukkan bahwa kombinasi parameter optimal untuk waktu pemotongan dan akurasi dimensi, yaitu pada kecepatan potong 1,8 m/min, jarak ketinggian laser 0,8 mm dan tekanan gas 0,8 bar. Kecepatan potong merupakan faktor paling dominan terhadap efisiensi waktu, ditunjukkan oleh waktu tercepat sebesar 25,26 detik dan nilai delta tertinggi. Sedangkan tekanan gas paling berpengaruh terhadap akurasi dimensi, dengan selisih terkecil sebesar 0,0567 mm. Uji MANOVA menunjukkan ketiga parameter berpengaruh signifikan terhadap gabungan variabel dependen secara multivariat (p 0,05), namun hanya signifikan terhadap efisiensi waktu secara univariat. Dapat disimpulkan bahwa pengaturan parameter proses yang tepat dapat meningkatkan efisiensi pemotongan tanpa mengorbankan akurasi. Hasil ini diharapkan dapat menjadi dasar pengambilan keputusan teknis dalam meningkatkan produktivitas PT XYZ.Kata Kunci:            cnc laser cutting; ss400; taguchi; grey relational analysis; manova
Optimization of Bipolar Plate Machining Process Using the Taguchi Method on CNC 3-Axis Maladzi, Radhi; Mulyana, Fajar; Matsaany , Bayun; Yudisha, Nabila; Risfi, Muhammad Prasha; Rahman, Fio Izzafur; Ramadhan, Bilal; Alam, Zezero Meo Cahaya
Recent in Engineering Science and Technology Vol. 4 No. 01 (2026): RiESTech Volume 04 No. 01 Years 2026
Publisher : MBI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59511/riestech.v4i01.140

Abstract

This study aims to optimize the machining parameters of bipolar plates using a CNC 3-axis milling machine based on the Taguchi method. Bipolar plates play a crucial role in proton exchange membrane fuel cells (PEMFCs), where dimensional accuracy and surface quality directly affect cell performance. The machining parameters considered in this research include spindle speed, feed rate, and depth of cut. An L9 orthogonal array was selected to design the experiments, and surface roughness as well as material removal rate (MRR) were evaluated as performance characteristics. Signal-to-noise (S/N) ratio analysis was applied to determine the optimal parameter combination. The results show that spindle speed and feed rate have the most significant influence on surface roughness, while depth of cut mainly affects the MRR. The optimal setting obtained was 3500 rpm spindle speed, 300 mm/min feed rate, and 0.2 mm depth of cut, which produced the lowest surface roughness and acceptable MRR. The confirmation experiment validated the Taguchi model prediction with an error of less than 5%. These findings demonstrate that the Taguchi method is an effective tool for optimizing CNC machining parameters of bipolar plates, improving both quality and manufacturing efficiency.
ANALISIS KELELAHAN KERJA PADA PEKERJA BAGIAN PACKING DI PT. XYZ DENGAN METODE INDUSTRIAL FATIGUE RESEARCH COMMITTEE (IFRC) Azri Rahmat Maklim Nasution; Nabila Yudisha; Margie Subahagia Ningsih; Rahmad Rezeki
Journal of Innovation Research and Knowledge Vol. 5 No. 9 (2026): Februari 2026
Publisher : Bajang Institute

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Abstract

PT. XYZ Tbk Medan Branch is a manufacturing company that produces instant noodles. This company is located in Tanjung Morawa, Deli Serdang Regency, North Sumatra. In facing competition in the current era of globalization, one of the efforts made by this company is to maintain the quality of the products produced so that they remain the main choice of consumers, from LKI data, the most frequent consumer complaints are in the packing section, namely 61.42%. This study aims to analyze worker fatigue at PT. XYZ in the packing section. The number of workers used as samples was 30 workers in the packing section, consisting of 6 seasoning checkers, 6 noodle sorters, 3 operators, 3 assistant operators, and 12 helper packers. Subjective work fatigue analysis used the Industrial Fatigue Research Committee (IFRC) questionnaire method and workload measurements were carried out which were calculated based on the 10 pulse method. Work fatigue in the production area was light 10%, moderate 63.33% and heavy 26.67%. ​The Pearson correlation values for workload, age, gender, and years of service are 0.893 (very strong), 0.737 (strong), 0.436 (moderate), and 0.363 (low), respectively. The results of the multiple regression analysis indicate that workload is the most influential factor on work fatigue, with a tstatistic value of 6.389.
Design, Development, and Performance Evaluation of a Closed-System Batik Fabric Drying Machine for Small-Scale Industry Applications Arifia Ekayuliana; Fathan Dewadi; Nabila Yudisha; Ibnu Rosid; Al Fauzi; Muhamad Purdiatama; Adinda Ludwika; Ahmad Royan; Muhammad Nurcholis
Engineering and Technology International Journal Vol 7 No 03 (2025): Engineering and Technology International Journal (EATIJ)
Publisher : YCMM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55642/eatij.v7i03.1156

Abstract

This study presents the design and performance evaluation of a closed-system batik fabric drying machine for small-scale industries. The system integrates a spinner for initial dewatering and a hot-air blower with thermostatic control at 60 °C. Experimental tests examined drying time, temperature stability, and fabric quality. Results showed that 2 kg of batik fabric dried in 18 minutes—about 70 % faster than traditional sun drying. The closed-loop air circulation improved thermal uniformity (±1.5 °C deviation) and reduced energy use by 25 %. No color fading or fiber damage occurred, and ultraviolet lamps prevented microbial growth. This design demonstrates that combining mechanical efficiency, thermal control, and ergonomics can enhance energy efficiency and production reliability for micro-scale batik industries.
Co-Authors a.arzahid savithra arzahid Abdullah Sani Achmad Noerkhaerin Putra Adam Cahya Soeprapto Adinda Ludwika Ahmad Royan Al Fauzi Alam, Zezero Meo Cahaya Andri Ramadhan Ardiansyah Tanjung Arifia Ekayuliana Asmara Sari Nasution Azri Rahmat Maklim Nasution Budhi Santri Kusuma Dama, Muhammad Hartama Rian Dimas Prayogi Dwiyanto . Dwiyanto Dwiyanto, Dwiyanto Fajar Mulyana Fathan Dewadi Fauzan Hakim Firgiawan Tenriadi Hapzi Ali Herdi Gunawan Ibnu Rosid Indra Gunawan Indra Gunawan Indra Gunawan Indra Gunawan Lubis, Dona Tiara M. Fiza Lubis Maladzi, Radhi Margie Subahagia Margie Subahagia Ningsih Margie Subahagia Ningsih Margie Subahagia Ningsih Margie Subahagia Ningsih Marwah Masruroh, Marwah Masdania Zurairah Matsaany , Bayun Matsaany, Bayun Mawardi Muhamad Purdiatama Muhammad Fahri Azmi Muhammad Fiza Lubis Muhammad Nurcholis Nashwa Bayu Tsabitha Ningsih, Margie Subahagia Noor Hidayati Panangian Mahadi Sihombing Pasaribu, Hanna Christine Pramono Putera, Hilmana Radhia Putra, Rama Ardiansyah Raden Mohamad Herdian Bhakti Rahmad Rezeki Rahmad Rezeki Rahmad Rezeki Rahmad Rezki Rahman, Fio Izzafur Ramadhan, Andri Ramadhan, Bilal RATNA KHOIRUNNISA Rayhan Bramantyo Refiza Refiza Rezeki, Rahmad Rida , Rizkha Rida, Rizkha Risfi, Muhammad Prasha Rizkha Rida Rizkha Rida Saidatuningtyas, Ifa Salwaellya, Hasna Sari Novalianda Sari, Intan Wulan Sihombing, Panangian Silitonga, Muhammad Prasha Risfi Siregar, Masdania Zurairah Sudrajat, Andi Syahputra, Fajar Tiara Tri Haryanto Yasin Aushaf Abdurrahman Zaharuddin Zaharuddin