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Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika
Published by Asosiasi Riset Ilmu Teknik Indonesia
ISSN : 3031500X     EISSN : 3031349X     DOI : 10.61132
Core Subject : Science, Engineering,
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering
open Industrial Engineering Science Cluster Research journal. This journal is a peer-reviewed and open research journal of the Engineering Science Clump
Arjuna Subject : Teknik (semua kategori) - Tenik Industri dan Manufaktur
Articles 254 Documents
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Perencanaan Strategi Pemasaran Kerajinan Kayu untuk Meningkatkan Volume Penjualan Menggunakan Analisis SWOT dan QSPM Viki Uswatul Khoridah; Anita Oktaviana Trisna Devi; Erna Indrianingsih
Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika Vol. 4 No. 2 (2026): Maret: Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informat
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/jupiter.v4i2.1347

Abstract

SMEs play an important role in Indonesia's economy, one of which is the woodcraft industry that has great potential for export. Putra Mandiri Woodcraft (PMW) faces sales instability, ranging from 30% to 145.48% of the set target, which affects production efficiency. This study aims to formulate an effective marketing strategy to increase sales volume and business competitiveness. The methods used in this study include the IFE and EFE Matrix analysis to identify internal and external factors affecting the company, SWOT analysis to formulate various strategies, and QSPM to determine strategy priorities based on the Total Attractiveness Score (TAS) value. The analysis results show that Putra Mandiri Woodcraft has an IFE score of 2.70 and an EFE score of 2.80, indicating that the company's internal condition is quite strong, although the response to external factors is still moderate. The company's main strengths lie in product quality and consumer trust, while its weaknesses are the lack of innovation in product design. Based on the SWOT analysis results, eight potential strategies were found, and the QSPM shows that expansion through a marketplace based on product quality and more varied designs is the main priority with a TAS value of 6.16.
Effectiveness of Mineral Downstreaming Policy in Encouraging Regional Economic Transformation : A Case Study of RKEF And HPAL Integration In Obi Island, South Halmahera
Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika Vol. 4 No. 2 (2026): Maret: Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informat
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/jupiter.v4i2.1351

Abstract

Indonesia’s mineral downstreaming policy has become a strategic instrument to increase the added value of natural resources and strengthen the country’s position in the global mineral value chain. This study aims to analyze the effectiveness of the mineral downstreaming policy in encouraging regional economic transformation through the development of an integrated nickel processing industry in Obi Island, South Halmahera. The research employs a descriptive qualitative approach using secondary data obtained from government publications, corporate reports, policy documents, and environmental reports. Key data sources include regional economic statistics from the Central Bureau of Statistics, corporate publications from Harita Nickel, and regulatory frameworks such as Law No. 3 of 2020 concerning Mineral and Coal Mining. The findings show that the downstreaming policy has transformed Indonesia’s nickel industry by shifting export patterns from raw ore toward higher value-added products such as ferronickel and Mixed Hydroxide Precipitate (MHP), which are essential materials for electric vehicle battery production. The integration of Rotary Kiln Electric Furnace (RKEF) and High Pressure Acid Leach (HPAL) technologies in Obi Island has strengthened Indonesia’s role in the global battery supply chain while also stimulating regional economic growth in South Halmahera. However, the rapid expansion of the nickel industry also raises environmental governance challenges that require stronger regulatory oversight and sustainable mining practices. Therefore, future policy implementation should emphasize balanced economic development, environmental sustainability, and effective governance in mineral resource management.
Perancangan Tata Letak Fasilitas pada Area Inspecting Menggunakan Metode Activity Relationship Chart (ARC) di PT X Annida Haya Fadhilah; Bekti Nugrahadi; Anita Oktaviana Trisna Devi
Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika Vol. 4 No. 3 (2026): Mei: Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/jupiter.v4i3.1372

Abstract

PT. X is a textile company that produces greige fabric. One of the crucial stages in the greige fabric production process is inspection. Currently, the facility layout of the inspection area at PT X is still suboptimal. This results in longer fabric movement distances and increased time, leading to delivery delays and higher material handling costs. This study aims to design an optimal facility layout in the inspection area using the Activity Relationship Chart (ARC) method and to determine the distances, times, and costs for the proposed layout. In the initial production layout, the fabric movement distance reached 26,130 meters in one working day, and the fabric movement time was 936 minutes. Furthermore, the initial production layout generated a relatively high OMH of Rp 13,742,980 per month. After designing the facility layout using the Activity Relationship Chart (ARC) and Blockplan methods, the proposed layout was arranged according to the production process sequence, resulting in a smoother material flow. The proposed layout yields 16,830 meters of fabric movement per workday, 660 minutes of required time, and a monthly OMH of Rp 7,945,622, with an efficiency of 39.32%.
Analisis Penyeimbangan Beban Secara Manual Menggunakan Metode Dua Titik Waktu pada Transformator Distribusi 50 kVA PNIAI007 Rangga Bismantara; Arief Marwanto
Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika Vol. 4 No. 3 (2026): Mei: Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/jupiter.v4i3.1376

Abstract

Load imbalance in three-phase distribution transformers can increase neutral current and power losses, thereby reducing the efficiency and reliability of electric power distribution systems. This study aims to analyze the level of load imbalance, power losses caused by neutral current, and the effectiveness of manual load balancing using the two-time-point method, namely peak load time (PLT) and off-peak load time (OPLT). The research was conducted on the PNIAI007 distribution transformer at PT PLN (Persero) ULP Enarotali using a quantitative descriptive approach with a case study design. Data were obtained through measurements of phase currents and neutral current, which were then analyzed to compare conditions before and after load balancing.The results show that the load imbalance level was significantly reduced from more than 29% to 2.47% during daytime operation and 1.21% during nighttime operation. The neutral current decreased from 37.81 A to 14.58 A during the daytime and from 51.76 A to 19.83 A at night. In addition, power losses due to neutral current were reduced by more than 85%. These results indicate that the two-time-point load balancing method is effective in improving the efficiency and operational reliability of distribution transformers.
Menurunkan Frequency Kecelakaan Subkontraktor dan Meningkatkan Kepuasan Pelanggan Melalui Penguatan Pilar Safety Governance di PT Putra Perkasa Abadi Jobsite Bib Muhammad Osaegi Restu Amrulloh; Berthoni Gantino
Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika Vol. 4 No. 3 (2026): Mei: Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/jupiter.v4i3.1377

Abstract

This study aims to improve subcontractor safety performance through strengthening governance systems, leading safety indicators, capability building, and performance monitoring at PT Putra Perkasa Abadi (PPA) Jobsite Borneo Indobara (BIB). The research was motivated by the increasing trend of subcontractor incidents during Quarter 1 to Quarter 3 of 2025, where seven incidents occurred and exceeded the company threshold. In addition, subcontractor performance evaluation scores remained below the target threshold of 70, while customer satisfaction scores in subcontractor management decreased from 8.45 to 7.58. The study applied a continuous improvement approach using Quality Control Circle (QCC), Pareto analysis, Nominal Group Technique (NGT), and root cause analysis with the Ishikawa method. Improvement initiatives were implemented through four strategic pillars: strengthening governance, reinforcing leading indicators, capability building, and integrated dashboard monitoring. The implementation results showed significant improvements in subcontractor safety management. The subcontractor incident frequency rate was reduced to zero incidents in Quarter 4 of 2025, subcontractor performance evaluation increased above the threshold to 70.81, and customer satisfaction scores improved to 8.55. The findings indicate that structured governance strengthening combined with real-time monitoring and subcontractor engagement can significantly improve mining safety performance and stakeholder trust.
Produksi Barbel Cor 5 kg, Panjang 23 cm, Diameter Pegangan 3 cm, Kapasitas 2 Biji/Jam Kaulan Syadid; Syamsul Hadi; Moch Rexy Satrianto; Muhammad Raditya Cantona; Rio Citra Kusuma
Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika Vol. 4 No. 3 (2026): Mei: Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/jupiter.v4i3.1390

Abstract

Sports equipment Barbells made of cement concrete require more volume than barbells made of cast iron as a problem faced. The production goal is to produce a 5 kg barbell, measuring a total length of 23 cm, a handle length of 13 cm, a diameter of 3 cm and a load diameter of 9 cm. Production methods include: barbell design; sand mold design; making sand molds for one print to obtain 2 units; preparation of labor; preparation of raw materials for cast iron, coke, limestone, ladel / carrier kowi, pouring molten cast iron into the mold, and adhesive / binder; melting cast iron; pouring cast iron into the heated mold; dismantling the mold and cutting the pouring bowl and riser; checking the weight of the barbell and its correction; finishing with spray paint according to the order; and checking the quality, dimensions, and packaging. The production results are in the form of a barbell weighing 5 kg 20 g with a total length of 23 cm and a handle diameter of 3 cm x 13 cm, a barbell load diameter of 9 cm, a total production cost of IDR 50,000 / unit, and a production duration of 30 minutes / unit which implies that the production of barbells is feasible to be carried out by medium to large industries / businesses, because it requires sufficient capital, especially for the cost of the Kupola furnace.
Penerapan Sistem Pakar untuk Mengukur Tingkat Stres Kerja Karyawan dengan Menggunakan Metode Forward Chaining Achmad Muzakir; Agus Budiyantara
Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika Vol. 4 No. 3 (2026): Mei: Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/jupiter.v4i3.1391

Abstract

An expert system is a computer-based program designed to simulate the reasoning and decision-making abilities of an expert in a particular field, enabling it to serve as a reference for specific conditions. This system integrates knowledge, rules, and experiences obtained from experts to support problem identification, provide recommendations, and determine appropriate decisions accurately. In this study, the expert system is utilized to measure employee stress levels based on the symptoms experienced by users. The diagnostic process is carried out using the forward chaining method, a reasoning technique that begins with facts or symptoms provided by the user and then matches them with IF–THEN rules to generate a conclusion or diagnostic result. Through the implementation of this method, the system is capable of providing employee stress assessments in a more structured, systematic, and rule-based manner according to the predefined knowledge base. The final outcome of this research is the development of a forward chaining–based expert system for measuring employee stress within a company environment, which can assist the diagnostic process more effectively and accurately.
Fabrikasi Cor Ornamen Kursi Taman Ukuran Tinggi 80cm, Lebar 70cm, Tebal 4cm, Kapasitas 0,5 Biji/Jam Yohanes Yuda Kristianto; Syamsul Hadi; Sholeh Aditya Tri Eriansyah; Ignatius Nicholas; Aditya Zalfa Prayoga
Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika Vol. 4 No. 3 (2026): Mei: Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/jupiter.v4i3.1394

Abstract

The non-ergonomics of garden chairs for users, the lack of strength of garden chairs made of gray cast iron, and the lack of production efficiency are the problems faced. The purpose of fabrication is to obtain a gray cast iron garden chair measuring 80 cm high, 70 cm wide, 4 cm thick which is ergonomic, strong enough, and efficient in its production process. The fabrication method includes: processing of student anthropometric data, determining material strength using the beam theory approach, determining freezing time using Chvorinov's theory, designing garden chairs, making sand casting using green sand molds, preparing gray cast iron raw materials, melting gray cast iron, pouring molten metal into molds and cooling, dismantling the mold and cutting the casting bowl and riser, finishing, and checking quality and dimensions. The fabrication results are in the form of a gray cast iron garden chair measuring 80 cm high, 70 cm wide, 4 cm thick which is ergonomic, strong enough, and efficient in its production process, the total production cost is IDR 640,000/unit, the production process duration is 120 minutes/unit with the implication that the garden chair is comfortable to use and strong enough for the weight of the person sitting on it.
Fabrikasi Kuku Bucket Ekskavator Baja Cor Ukuran 300×90×105 mm Lubang 30 mm, Kapasitas 0,25 Biji/Jam Agung Cahyadi; Syamsul Hadi; Achmad Syarifudin Annawa; Ardita Firmansyah; Hadziq Fikri; Ihza Narayana Rosyadi
Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika Vol. 4 No. 3 (2026): Mei: Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/jupiter.v4i3.1395

Abstract

The problem faced lies in the excavator bucket nails that do not have standardized manufacturing procedures in the local casting industry, resulting in inconsistent product quality and high dependence on imported components. The purpose of fabrication is to obtain excavator bucket nails made of high Manganese cast steel (hadfield steel) measuring 300×90×105 mm with a hole diameter of 30 mm. The fabrication method includes: purchasing a 300×90×105 mm excavator bucket nail mold using one-piece casting method, preparing ASTM A128 Grade B-2 high Manganese steel, melting the steel with an induction furnace at a pouring temperature of 1480-1510°C, pouring the molten steel into a sand mold, dismantling and cutting the casting bowl and riser, drilling the dowel holes in stages up to a diameter of 30 mm, machining, finishing, solution annealing heat treatment at a temperature of 1080°C for 60 minutes, quenching in water, preparing and testing Charpy specimens, and inspecting the quality and dimensions of the product. The fabrication results are in the form of high manganese cast steel excavator bucket nails (hadfield steel) measuring 300×90×105 mm with a hole diameter of 30 mm, the total production cost is IDR 315,000/unit, the production process duration is 240 minutes/unit which implies that the excavator bucket nails can be used according to standards.
Pembuatan Pemberat Kerucut Jaring Nelayan dari Bahan Timah Hitam 25 g, Kapasitas 30 Biji/Jam Stevanus Nefa Ardian; Syamsul Hadi; Muhammad Madda Amrulloh; Chelista Aulia Marza; Muchammad Deni Satriyo Wardoyo
Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika Vol. 4 No. 3 (2026): Mei: Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/jupiter.v4i3.1396

Abstract

Floating and not sinking quickly fishing nets that have a small chance of catching fish are problems faced in the waters. The purpose of making is to obtain a cone weight with a length of 28.5 mm and a width of 28.5 mm, a height of 31 mm, 25 g of lead material totaling 80 pieces, around the fishing net made of nylon thread with a diameter of 1 mm, with a radius of 3 m, so that the number of weights becomes 2 kg and the weight of the net including the main rope is 3 kg which totals 5 kg. The manufacturing method includes: net weight design, making a mold containing 10 pieces of lead at a time, preparing lead material and casting equipment, casting lead into the mold, dismantling the mold and cutting the casting channel, connecting channels between weights and cutting risers, drilling 3 mm diameter weights, and checking the quality and dimensions of the net weights. The result of the production is a cone weight for fishing nets made of 25 g of black lead with a weight deviation of around 2 g, a total production cost of Rp. 950,-/piece, and a process duration of 2 minutes/piece which implies that for one fishing net 80 pieces can be installed with an estimated total weight of 2 kg of weight and a total weight of the net equipment of around 5 kg.

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