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Jurnal Optimalisasi
Published by Universitas Teuku Umar
ISSN : 24775479     EISSN : 25020501     DOI : https://doi.org/10.35308/jopt
Core Subject : Engineering,
Control & Systems Engineering Industrial & Manufacturing Engineering
JURNAL OPTIMALISASI (JOPT) merupakan jurnal elektronik online yang diterbitkan oleh Program studi Teknik Industri, Fakultas Teknik, Universitas Teuku Umar. JOPT memuat kajian dibidang Manufaktur, Ergonomi dan Manajemen Rantai Pasok. Tujuan penerbitan jurnal optimalisasi adalah sebagai wadah publikasi yang mewadahi kebutuhan peningkatan kualitas karya ilmiah dalam rangka pengembangan keilmuan dan menyebarluaskan kajian bidang ilmu Teknik Industri, sekaligus sebagai wahana komunikasi diantara cendekiawan, praktisi, mahasiswa dan pemerhati masalah Industri. JOPT terbit dua kali dalam setahun, tepatnya pada bulan April dan Oktober. Bagi pembaca, penulis, dan yang melakukan akses situs jurnal yang ingin submit naskah ke jurnal ini, silakan mendaftar sebagai author kemudian login untuk submit naskah. Informasi penulisan dan submit naskah dapat diakses di author guidelines dengan mengikuti pentunjuk di situs jurnal.
Arjuna Subject : Teknik (semua kategori) - Tenik Industri dan Manufaktur
Articles 16 Documents
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Search results for , issue "Vol 11, No 2 (2025): Oktober" : 16 Documents clear
Peranan Inisiatif Pribadi pada Industri Skala Kecil: Cross-Case Analysis pada UKM Kopi di Wilayah Aceh Tengah Ulfah, Tya; Hardjomidjojo, Hartrisari; Anggraeni, Elisa; Safitriyawi, Roja; Lestari, Suci Ayu
Jurnal Optimalisasi Vol 11, No 2 (2025): Oktober
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v11i2.12261

Abstract

Global economic competition has affected financial condition in Indonesia. It has also impacted economy in Aceh province as one of producers of agricultural resources. This situation results in great challenges for Indonesia’s business owners as economic booster towards national financial stability. To cope with this problem, the study to analyze entrepreneurial charactersistics was conducted. This study aims to evaluate what traits play a great role for maintaining certain business to stay sustainable despite emerging challenges. A systematic literature review was done prior to this study to design a theoritical framework, which attributed to cases from entrepreneurs globally. The methodology used was cross-case analysis to verify the theoritical framework from previous study. About three business owners from Aceh were interviewed to identify the traits that lead them to survive their business especially during COVID-19 pandemic. The result showed that personal initiative plays a significant role in sustaining the enterprise despite external factors that are associated with it.  
Optimasi Parameter Proses Injeksi Molding Material Biokomposit Serat Sisal dan Polypropylene Terhadap kekuatan Impak Tsany, Rahmat Basya Shahrys; Sholihah, Mar’atus; Fajardini, Ridhani Anita; Ahmad, Mahasin Maulana; Maulidhia, Alief Nur Aisyi; Ilman, Abdillah Fashiha
Jurnal Optimalisasi Vol 11, No 2 (2025): Oktober
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v11i2.13623

Abstract

The demand for environmentally friendly materials has driven the utilization of natural fiber–based biocomposites as an alternative engineering material. This study aims to optimize the injection molding process parameters of polypropylene (PP)–sisal fiber biocomposites with the aid of maleic anhydride polypropylene (MAPP) as a compatibilizer. The research scope covers the effect of process parameter variations on the mechanical properties, particularly impact strength. The composite material consists of 85% PP, 10% sisal fiber, and 5% MAPP, which were extruded into pellets prior to processing using an injection molding machine. Optimization was carried out using the Taguchi method with an L9 (3⁴) orthogonal array design. Four main parameters were investigated: barrel temperature (200°C, 210°C, 220 °C), injection pressure (50 bar, 55 bar, 60 bar), holding pressure (40 bar, 45 bar, 50 bar), and injection velocity (60 mm/s, 65 mm/s, 70 mm/s). The response variable was impact strength (kJ/m²) according to ASTM D256-04 standards, while other parameters were kept constant. Data were analyzed using the Signal-to-Noise Ratio (S/N ratio) with the “larger-the-better” criterion to obtain the optimum condition. The results showed that the optimum parameter combination A1B3C3D2 (200 °C, 60 bar, 50 bar, 65 mm/s) provided the best response, as this combination yielded the highest Signal-to-Noise ratio with a more stable impact performance. Under these conditions, the material flowed well into the mold, fiber distribution was uniform, and stronger bonding occurred between fiber and matrix, thereby enhancing the mechanical properties.
Penerapan Siklus Plan-Do-Check-Act (PDCA) untuk Mengurangi Pemborosan dalam Industri Jasa Rahmayanti, Dina; Wirdianto, Eri; Afrileni, Wirna
Jurnal Optimalisasi Vol 11, No 2 (2025): Oktober
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v11i2.12337

Abstract

This research aims to increase the efficiency of aging time in the car refurbished process in T XYZ by applying the PDCA (Plan-Do-Check-Action) method. The company's main problem is the high number of idle cars due to aging times that exceed standards, especially in repair, service, and preparation activities. The research methods used include identifying the root of the problem using a fishbone diagram, designing solutions using the 5W+1H approach, improving implementation, and evaluating results. Implementation results show a decrease in the average aging time: in repair from 5,333 to 3,833 days, in service from 6 to 3,333 days, and preparation from 1,333 to 0.967 days. The number of idle cars also decreased gradually to reach 86 units with an actual aging time of one day. These findings prove that implementing PDCA effectively increases the efficiency of the refurbished process, reduces time waste, and supports increased company operational performance. This research contributes to developing continuous improvement practices in the automotive industry. It can be a reference for other service companies that are optimizing productivity through a quality management approach.
Identifikasi Bahaya dan Pengendalian Risiko Keselamatan dan Kesehatan Kerja (K3) pada PT. PLN (Persero) Akmal, Abdiel Khaleil; Ardika, Jumelia; Ananda, Zulia; Arfiya, Hilda
Jurnal Optimalisasi Vol 11, No 2 (2025): Oktober
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v11i2.11639

Abstract

The role of the workforce in supporting National Development is highly important, including the workers at PT. PLN (Persero) Transmission and Substation Meulaboh. It is necessary to provide occupational safety and health protection to workers in order to increase their productivity. This study aims to explain the importance of occupational safety and health protection in controlling hazard risks in the work environment of PT. PLN (Persero) Transmission and Substation Meulaboh. The research was conducted through direct observation and interviews, then analyzed using legal theory. The results show that there are still challenges in implementing occupational safety and health at PT. PLN (Persero) Transmission and Substation Meulaboh, such as the vast working area, employee relocation, and lack of awareness regarding the importance of using personal protective equipment (PPE). These challenges must be addressed through innovations in remote supervision and awareness campaigns to improve understanding of occupational safety and health, particularly the use of PPE.
Strategi Minimasi Biaya Produksi Tahu Simadu Cicadas dengan Metode Aggregate Planning Fauzan, Muhamad Ridho; Sangadah, Hanik Atus; Baharta, Ridwan
Jurnal Optimalisasi Vol 11, No 2 (2025): Oktober
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v11i2.12675

Abstract

Tofu is a protein-rich product derived from soybeans and is in high demand in Indonesia. One of the tofu producers in Subang is PD. Berkah Jaya with the trade name “Tahu Simadu Cicadas”. Labor in the production of tofu at PD. Berkah Jaya uses 8 workers. Every production of PD. Berkah Jaya does not use production planning, but only relies on the number of incoming orders. The purpose of this study is to determine the cost minimization strategy based on the aggregate planning method. The stages carried out are forecasting, aggregate planning and making a Production Master Schedule (JIP). Forecasting used is the Single Moving Average (SMA) and Weighted Moving Average (WMA) methods. Aggregate planning used is the labor control method and the mixed method with overtime. The best forecasting based on the error rate can use the WMA method with an MSE value of 115,885 and a MAPE value of 3.20%. Cost minimization is achieved by the mixed method with overtime which incurs a cost of Rp 74.189,915  while the labor control method is higher at Rp 78.727.759. The JIP is made based on aggregate planning data for the mixed method with overtime. The number of workers to be used is 8 workers with 6 working days per week and the use of overtime as much as 7.33 hours or 1,276 packs of tofu for the next 3 months.
Perancangan Alat Pengupas Kulit Salak menggunakan QFD untuk Meningkatkan Produktivitas Produk Olahan Salak Siregar, Erin Alawiyah; Matondang, Irwan Zulfikri; Putra, Rama Dani Eka; Sartika, Syifa'a
Jurnal Optimalisasi Vol 11, No 2 (2025): Oktober
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v11i2.13212

Abstract

Pengolahan buah salak secara manual masih menghadapi kendala berupa waktu kerja yang lama, risiko cedera pada pekerja, serta ketidakkonsistenan hasil pengupasan. Permasalahan ini menjadi latar belakang pentingnya inovasi alat pengupas kulit salak yang efektif dan efisien. Penelitian ini bertujuan untuk merancang, menguji, dan mengevaluasi kinerja alat pengupas kulit salak sekaligus pemotong buah salak sehingga dapat meningkatkan produktivitas dan kualitas pengolahan hasil pertanian. Metode penelitian dilakukan melalui perancangan alat berbahan dasar logam dengan konstruksi mekanis yang ergonomis, dilanjutkan dengan uji kinerja berdasarkan kapasitas produksi, efisiensi, serta tingkat kepuasan pengguna. Hasil penelitian menunjukkan bahwa alat memiliki kapasitas kerja 5 kg per 10 menit dengan tingkat efisiensi 77%. Selain mempercepat proses pengupasan, alat juga menghasilkan pemotongan buah yang seragam dan higienis. Dengan demikian, alat ini berpotensi diterapkan pada skala rumah tangga maupun usaha kecil menengah untuk meningkatkan nilai tambah produk turunan salak.
Analisis Kerusakan Mesin Thresher pada PT Socfindo Seunagan Menggunakan Metode Failure Mode And Effects Analysis (FMEA) Kasmawati, Kasmawati; Fajar, Ulul Al; Sofiyanurriyanti, Sofiyanurriyanti; Safitriyawi, Roja; Marlinda, Marlinda
Jurnal Optimalisasi Vol 11, No 2 (2025): Oktober
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v11i2.13357

Abstract

This study aims to analyze the damage of the Thresher machine at PT Socfindo Seunagan using the Failure Mode and Effects Analysis (FMEA) method as an effort to identify potential failures, causes, and impacts on the production process. The scope of the study focused on four main components of the thresher machine, namely the thresher drum, shaft and bearings, chain, and gearbox. The research method employed a combination of interviews, direct field observation, and literature reviews. Data analysis used the FMEA approach by determining the type of potential failure, causes, effects caused, control efforts, and calculating the Risk Priority Number (RPN) to determine repair priorities. The results showed that the damage that often occurred included bending/breaking in the thresher drum, cracks in the shaft and bearings, breaks in the chain, and cracks in the gearbox. The highest RPN value was found in the gearbox component at 224, followed by the chain with a value of 96, the thresher drum at 42, and the shaft and bearing at 36. This indicates that the gearbox is the most critical component that requires special attention in care and maintenance. The conclusion of this study is that thresher machine failure has the potential to significantly reduce CPO processing productivity if proper control is not implemented. Therefore, companies need to implement routine maintenance and periodic checks, with a primary focus on the gearbox components, to minimize the risk of damage, extend the machine's lifespan, and maintain optimal production flow.
Evaluasi Persepsi Pengguna Jalan terhadap Keselamatan Berkendara pada Simpang Tak Bersinyal di Kota Meulaboh Erliana, Hilma; Novriza, Ferdiansyah; Sari, Nina Novita; Wulansari, Intan
Jurnal Optimalisasi Vol 11, No 2 (2025): Oktober
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v11i2.13041

Abstract

Traffic accidents at unsignalled intersections remain a serious problem in Indonesia, particularly in urban areas such as Meulaboh City, West Aceh. The high accident rate at these locations is due to the complexity of road user interactions and inadequate safety facilities. This study aims to analyse road users' perceptions of driving safety at unsignalised intersections, focusing on eight key aspects: demographic characteristics, infrastructure, driving behaviour, accessibility, road physical conditions, social factors, environmental factors, and regulations and enforcement. The research method employed a descriptive quantitative approach, with data collected through a Likert scale questionnaire (1-5) administered to 100 respondents selected via purposive sampling. Data were analysed using a percentage index formula to measure the level of agreement among respondents. The research results show that infrastructure (83,05%) and driving behaviour (83.10%) achieved the highest scores, indicating strong agreement on the importance of improving physical facilities and road user discipline. Meanwhile, road physical condition (75.4%) recorded the lowest score, highlighting the need to improve road surface conditions and drainage. Other findings revealed the significant influence of environmental factors (81.55%) and regulations (81.35%), as well as the role of social awareness (77.3%) and demographics (76.85%). The conclusion of this study emphasises that infrastructure improvements and increased driving discipline need to be prioritised in traffic safety strategies. Data-driven policy support involving public education, law enforcement, and inter-agency collaboration is essential to create a safe, inclusive, and sustainable traffic environment at unsignalised intersections. Concrete recommendations include installing traffic signs/lighting, safety campaigns, and the use of technology.
Perencanaan Distribusi Berbasis DRP sebagai Strategi Efisiensi Biaya pada Industri Air Minum Dalam Kemasan (AMDK) Saputra, Arie; Alfatah, Adrian
Jurnal Optimalisasi Vol 11, No 2 (2025): Oktober
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v11i2.13406

Abstract

This study aims to design an efficient distribution planning model for bottled drinking water (AMDK) products in the West-South Coast region of Aceh by integrating forecasting, Economic Order Quantity (EOQ), safety stock, and Distribution Requirement Planning (DRP) methods. The research scope covers four distribution centers (DCs), namely Aceh Barat, Nagan Raya, Aceh Barat Daya, and Aceh Selatan, each with distinct demand characteristics: stable, increasing, and declining. The methodology begins with field studies and the collection of secondary data, including historical demand, distribution costs, inventory levels, and lead times. Demand forecasting was conducted using quadratic and cyclical models to estimate requirements for each DC. EOQ calculations were then applied to determine the most economical order quantities, while safety stock was established to maintain inventory availability amid demand uncertainty and lead time variations. These results were integrated into the DRP worksheet, which contains order schedules, net requirements, shipment quantities, and receipt plans for each DC. The findings indicate that DRP effectively accommodates varying demand patterns across DCs, thereby minimizing the risk of overstocking and stockouts. From a cost perspective, a comparison between the company’s actual conditions and the DRP scenario revealed significant efficiency improvements: total distribution costs decreased from IDR 307,227,778 to IDR 301,579,831, yielding savings of IDR 5,647,947 or 1.84%. In conclusion, the application of DRP integrated with forecasting, EOQ, and safety stock enhances distribution cost efficiency while strengthening the reliability of the company’s supply chain. The practical implication of this research highlights the importance of adopting DRP on a continuous basis to enable companies to respond more adaptively, systematically, and efficiently to demand fluctuations and geographic challenges.
The Application of Value Engineering-Based Balanced Scorecard on Madura Small and Medium Enterprises: A Customer-Oriented and Cost- Efficiency Strategic Approach Fais, Moh. Ainul; Deviyanti, I Gusti Ayu Sri; Widari, Nyoman Sri; Tjandra, Suhatati
Jurnal Optimalisasi Vol 11, No 2 (2025): Oktober
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v11i2.12841

Abstract

Madura stalls, as part of informal micro-enterprises, play a vital role in meeting the needs of urban communities. However, most still operate without a structured strategic management system and performance measurement. This situation makes it difficult for business owners to monitor efficiency, understand customer satisfaction, and plan for long-term competitiveness. On the other hand, there is a research opportunity to adapt modern management methods, such as the Balanced Scorecard (BSC) and Value Engineering (VE), to suit the context of simple yet influential small businesses. This study aims to design a performance measurement system by integrating VE into the BSC framework at a Madura stall in Klampis, Surabaya. The method used is an exploratory case study with a mixed-methods approach, involving owners (n = 5), employees (n = 10), and customers (n = 30). Data were collected through interviews, observations, questionnaires, and document review. Data were then analyzed using the Function Analysis System Technique (FAST), KPI formulation, AHP weighting, and performance evaluation. The study results show that several key performance indicators exceeded targets, such as daily sales volume (226.7%), number of customers (200%), and net profit (120%). These achievements confirm that the integration of the BSC and VE can improve cost efficiency, strengthen customer orientation, and provide a clearer strategic direction for informal micro-enterprises. This study contributes by providing a contextually relevant performance measurement framework and opens up opportunities for further research on the application of the BSC and VE to other micro-enterprise units.

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