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OPERATION EXCELLENCE: Journal of Applied Industrial Engineering
Published by Universitas Mercu Buana
ISSN : 2085429     EISSN : 26545799     DOI : 10.22441/oe
Core Subject : Science,
Decision Sciences, Operations Research & Management
The aim of Operations Excellence: Journal of Applied Industrial Engineering (OE Journal) is to publish theoretical and empirical articles that are aimed to contrast and extend existing theories, and build new theories that contribute to advance our understanding of phenomena related with industrial engineering and industrial management in organizations, from the perspectives of Quality Engineering, Productivity Improvement, Logistic & Distribution, Supply Chain Management, Performance Management & Improvement System, Modelling, Operations Management, Optimization, Green Manufacturing.
Arjuna Subject : -
Articles 317 Documents
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Reducing reject cotter valve skyrocketing cylinder head parts in retainer Press Machine Process in the automotive industry Rosyidi, Edwar; Wibisono, Aprianto; Setiawan, Rohmat; Sugihartanti, Noviani Putri; Siregar, Januar Parlaungan; Pratama, Hafiidz Satria
Operations Excellence: Journal of Applied Industrial Engineering Vol. 17 No. 1 March 2025
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/oe.2025.v17.i1.131

Abstract

The automotive industry is an automotive company that produces various types of motorcycles, such as automatic, sport and cub. One of the processes is machining. This process is very important because quality is highly considered. In the machining process, the products produced are crankcase R, crankcase L, cylinder comp, cylinder head, crankshaft. Based on initial observations, this process found reject goods. In the cylinder head line machining area, especially the retainer press machine, there is a problem of reject cotter valve soaring and resulting in the repair process. This will have an impact on the addition of time to repair and product quality is reduced. PT XYZ is facing a problem with cotter valve soaring on the cylinder head product with daily report data for the last 3 months, the percentage of cotter valve soaring problems reaching 1.5% exceeding the maximum defect target of 0.5%. This study aims to reduce the level of reject cotter valve soaring during the retainer press machine pressing process. The method used is eight steps. One solution is to modify the punch size to adjust the urethane punch to work optimally. This process will have an impact on reducing the number of rejects. In addition, this repair also does not cause a repair process on the cylinder head part. The results of this study are very significant with the reduction in cotter cases soaring to 0.2%
Implementation of kansei engineering in the design of packaging design elements: study case for Food MSME Sari, Novi Purnama; Rahmadianto, Muhammad Athariq; Ramadhan, Raihan Thoriq; Napitupulu, Yesaya Firdaus
Operations Excellence: Journal of Applied Industrial Engineering Vol. 17 No. 1 March 2025
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/oe.2025.v17.i1.135

Abstract

The current packaging of Rangi Cake products in the market is criticized for its simplicity and lack of adequate safety features, which compromises both product safety and visual appeal. To address this, a research initiative was undertaken to enhance the design and functionality of Rangi Cake packaging. The study employed Kansei engineering to discern consumer preferences regarding packaging. The findings incorporated 46 packaging samples and identified 44 Kansei words. Utilizing Principal Component Analysis (PCA), two design concepts emerged: "Standard-simple" and "informative-efficient." The "standard-simple" concept, with the highest R-Square value of 0.9615 through QTT-1 results, was selected for further development. The design elements derived from consumer preferences include a square shape, kraft cardboard material, window feature, typography design, minimalist style, surface sticker, gray color, and header card/topper cover shape. The packaging design, based on these elements, was translated into 3D mockups. Survey results indicated a preference for the Reusable concept mockup (PC2). Sample evaluation, conducted using fuzzy logic on the PC1 sample, yielded a value of 4.0, affirming the positive reception of the redesigned packaging concept. This research contributes to elevating the visual appeal and functionality of Rangi Cake packaging, aligning it more closely with consumer preferences.
Implementation of QCC method to reduce defects in rear combination lamp gaps on MPV vehicles in the automotive industry Setiawan, Setiawan; Kurnia, Hibarkah; Nasihardani, Dana; Putri, Hana Silvia Dwi
Operations Excellence: Journal of Applied Industrial Engineering Vol. 17 No. 1 March 2025
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/oe.2025.v17.i1.132

Abstract

The appearance of four-wheeled vehicles is the first aspect observed by customers. Defects in appearance, such as gaps in the rear combination lamps, can reduce the competitiveness of Multi-Purpose Vehicle (MPV) products. Such defects affect product quality and customer satisfaction, making it essential for companies to minimize defects to enhance market competitiveness. This study applies the QCC (Quality Control Circle) method with a PDCA (Plan-Do-Check-Action) approach, supported by the 8-step problem-solving process and 7 QC tools. The method aims to identify the root causes of defects and implement appropriate corrective actions. In its implementation, the Plan phase involves identifying the problem and analyzing root causes using QC tools such as Pareto charts and fishbone diagrams. In the Do phase, corrective actions are carried out by adjusting processes or materials. The Check phase includes evaluating the results of the corrective actions, while the Action phase ensures the changes are sustained over time. Using the QCC method, defect rates per unit decreased from 0.130 to 0.004.
Battery pack remanufacturing decisions considering remanufacturing costs and risk priority number in determining repair or replacement Muqimuddin, Muqimuddin; Pratikno, Faishal Arham; Hertadi, Christopher Davito Prabandewa
Operations Excellence: Journal of Applied Industrial Engineering Vol. 17 No. 1 March 2025
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/oe.2025.v17.i1.128

Abstract

The growth of electric vehicles is accompanied by an increase in the number of batteries and battery waste produced, which can ultimately have harmful effects on the environment. As a solution, battery pack remanufacturing has emerged as an effective alternative. However, challenges in the remanufacturing process include determining which battery pack components can be repaired and which require replacement with new components, ensuring that remanufacturing costs remain low while preventing potential future failures. This study aims to develop a remanufacturing decision model that integrates Failure Mode and Effect Analysis (FMEA) with a remanufacturing cost model. The study’s results outline the relationship between failure modes and battery pack components, whereby each failure mode can be classified to determine appropriate repair or replacement actions. While specific actions have been formulated, remanufacturing costs remain the final determinant in the overall battery remanufacturing decision. Based on the analysis, repairs or replacement of new part on 13 components associated with failure modes still render the battery pack suitable for remanufacturing, with a potential cost saving of more than 40% compared to purchasing a new battery pack.
Ergonomics-Based Redesign of Tourist Boat Stairs Using a Quality Function Deployment (QFD) Approach to Improve Traveler Security and Comfort Hidayatullah, Rizki; Kurnia, Fikrihadi; Suartika, I Made; Kaliwantoro, Nur
Operations Excellence: Journal of Applied Industrial Engineering Vol. 17 No. 1 March 2025
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/oe.2025.v17.i1.129

Abstract

This research aims to redesign an ergonomic tourist boat ladder to improve the comfort and safety of tourists in the context of marine tourism. Tanjung Luar Tourism Village, East Lombok, was chosen as the research location due to the high potential of tourists using boats as a means of transportation to marine tourism destinations. Currently, many tourist boats are not equipped with safe and comfortable stairs, increasing the risk of accidents. The method used in this research is Quality Function Deployment (QFD), which identifies the needs and preferences of tourists through surveys and questionnaires. The research sample consisted of 57 respondents, including tourists, boat crew, and ergonomics experts. The House of Quality (HoQ) results showed that the main needs of tourists include comfortable and safe handrails, anti-slip stair surfaces, and corrosion-resistant stair materials. Based on these needs, three alternative boat ladder designs were developed that consider aspects of safety, durability, and ease of use in marine environmental conditions. Products with ergonomic handrails, stainless steel material, and design flexibility were prioritized in the development. These designs are expected to not only provide a safer and more comfortable solution for users but also contribute to the development of safety standards for tourist boats in Indonesia. This research provides a foundation for the improvement of tourist boat facilities, especially in areas with great potential in marine tourism.
Quality improvement through 8D methodology: an automotive industry case study Rusman, Karyadi; Hetharia, Dorina
Operations Excellence: Journal of Applied Industrial Engineering Vol. 17 No. 1 March 2025
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/oe.2025.v17.i1.126

Abstract

Nowadays quality is a key factor for the success of a product or company to survive and be accepted by consumers. Repeated quality problem in automotive industry become one of factor that influence company performance. However the problem is visual aspect, if this repetitive will increase customer dissatisfaction. Problem covers pillar loop scratch becomes the repeated and worst problem in Feb–March 2020. This research aims to assist in quality improvement by using the eight discipline (8D) method to solve the problem “cover pillar loop scratch. An 8D method is a problem-solving tool that has complete and systematic corrective action stages in problem-solving, which is for short-term action and long-term corrective action also effective in preventing the re-occurring problem. Result the implementation of the 8D methodology in problem-solving seat belt production problems in the SB3 line of Automotive Industry succeeded in reducing and eliminating the number of problems “cover pillar loop scratch” from 60 pcs in March 2020 to 0 in July 2020.
Analysis of waste in the flow process warehouse using the lean warehousing method at ABC Company Pamungkas, Catur Arta; Aryanny, Enny
Operations Excellence: Journal of Applied Industrial Engineering Vol. 17 No. 1 March 2025
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/oe.2025.v17.i1.136

Abstract

ABC Company is a manufacturing company that produces animal feed using raw materials stored in a warehouse. One type of raw material that is widely used for animal feed production needs is the premix type of raw material in warehouse 1. The large number of raw material needs makes warehouse activities increase. The large number of activities causes the warehouse to often experience wasteful activities with a lead time exceeding the company's standard of 420 minutes. This waste can reduce the effectiveness and efficiency of the warehousing flow process. Therefore, the purpose of this study is to determine what waste occurs in the warehouse using the lean warehousing method and to provide suggestions for improvements with Plan, Do, Check, Action and Seiri, Seiton, Seiso, Seiketsu, Shitsuke. Analysis carried out using the lean warehousing method is important for the category of activities that add value, the category of activities that are needed, the category of activities that are not needed, and the time of warehousing flow can be known through value stream mapping both before and after improvement. From the analysis conducted, it was found that there were 52 warehouse flow activities with an activity time of 556 minutes, which after being given a proposal for improvement in the warehouse flow process activities decreased to 39 activities with a lead time of 304 minutes.
Assessing critical indicators of supply chain ambidexterity in the 3PL industry: Insights from Indonesia Rafsanjani, Hasemy; Vanany, Iwan
Operations Excellence: Journal of Applied Industrial Engineering Vol. 17 No. 2 July 2025
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/oe.2025.v17.i2.139

Abstract

Supply chain ambidexterity (SCX) is essential strategy for enhancing the competitiveness and business continuity of third-party logistics (3PL) companies in Indonesia. SCX combines the approaches of Supply Chain (SC) agility and SC integration simultaneously to foster business performance. However, research on the factors influencing SCX remains limited. This study integrated the Fuzzy Delphi Method (FDM) to validate 41 proposed indicators and applied Best-Worst Method (BWM) to assess the relative weight and examine the most and least effective indicators for Indonesia’s 3PL industry. The findings revealed 17 effective indicators, with the top 5 being SC sensing, adaptability, process optimization, regulatory compliance, and employee competency development, which were identified as the most significant indicators. These indicators are critical drivers that ensure the successful implementation of SCX strategy. The results offer valuable insights to professionals and policymakers, helping them formulate strategies to strengthen ambidextrous capabilities in the dynamic environment of the 3PL sector, thereby contributing to a more sustainable and competitive logistics landscape in Indonesia.
Determination of standard time with the stopwatch time study method at PT BI Ramadhan, Anas Anugerah; ⁠Sukanta, ⁠Sukanta; Fitriyani, Risma
Operations Excellence: Journal of Applied Industrial Engineering Vol. 17 No. 2 July 2025
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/oe.2025.v17.i2.145

Abstract

In the manufacturing industry, the effectiveness of the work process is one of the key factors to increase the efficiency and competitiveness of the company. One of the main challenges is the accurate determination of standard working times, especially in processes involving manual inspections. Without a clear standard time standard, setting work targets is often not optimal, which can result in uneven workload, decreased productivity, and worker fatigue. PT BI is an automotive component manufacturing company that uses cold forging technology. One of the important processes in this company is visual inspection to guarantee product quality. However, the company does not yet have a standard time standard in the visual inspection process, so the daily target is determined based on the cycle time, which is less effective. This study aims to analyze the effectiveness of operators in using standard time in achieving targets. The study used the stopwatch time study method to measure the work cycle time in visual inspection operators. Data was collected through observations and interviews with operators as well as analysis using Minitab software. The results of the study show that the application of standard time is able to increase the effectiveness of operators in achieving daily targets. In addition, precise determination of standard timing provides companies with advantages with better process efficiency and reduced operator fatigue levels. In conclusion, the application of standard time can be the optimal solution to increase company productivity while maintaining worker welfare.
Ergonomic analysis on wheelchair redesign to improve user health and safety Kusmindari, Christofora Desi; Pasmawati, Yanti; Arfianto, Ahmad Syahrul; Pratama, Muhammad Rezky Putra; Prassetio, Rendi
Operations Excellence: Journal of Applied Industrial Engineering Vol. 17 No. 2 July 2025
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/oe.2025.v17.i2.140

Abstract

This research aims to redesign a wheelchair to enhance comfort and safety based on the ergonomic needs of users through a holistic ergonomic approach. The study employs the FMEA (Failure Mode and Effects Analysis) method to identify product failures in wheelchairs and determine preventive measures using the Risk Priority Number (RPN), calculated from Severity (S), Occurrence (O), and Detection (D). A biomechanical assessment using REBA (Rapid Entire Body Assessment) evaluates the posture and movements of wheelchair users and identifies factors contributing to ergonomic risks. The FMEA analysis revealed three failure modes with the highest RPN values: "head drooping" (192), "hands hitting the wheels" (120), and "feet drooping" (112). The REBA assessment indicated a final score of 9, signifying a high risk of injury, necessitating immediate corrective actions. In response to the findings from FMEA and REBA, a new wheelchair design is proposed, incorporating features such as neck support, a hydraulic system for the back, and calf supports. Additionally, the wheelchair dimensions will be adjusted based on the users' anthropometric measurements to ensure better ergonomics.

Page 31 of 32 | Total Record : 317

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