Abstract

IJLTEMAS

International Journal of Latest Technology in Engineering, Management & Applied Science (IJLTEMAS)

IJLTEMAS

2278-2540

IJLTEMAS

305

10.51583/IJLTEMAS.2026.150800111

Education

Capacity and UPH Improvement with Lean Tool: A Case Study of Electric Assembly Line

Phuong Nam

Industrial & Systems Engineering Major, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, Dien Hong Ward; Vietnam National University Ho Chi Minh City (VNU-HCM), Linh Xuan Ward, Ho Chi Minh City, Vietnam. Vietnam Yen Chi

Truong

Ngo

And

15 8 1547 1556 03 09 2026 08 09 2026

19 09 2026

Lean Manufacturing Lean Line balancing DMAIC MOST UPH UPPH.

Abstract

The economic environment is becoming more competitive as the modern world develops. For this reason, it is crucial for manufacturing companies to continuously improve, optimize processes, and reduce costs to outperform their rivals. Lean manufacturing is known as a good way for the great majority of companies. In this study, lean technology to enhance a production line for family products with rechargeable items would be mentioned. Lean tools and other suitable methods like line balancing, Maynard Operation Sequencing Technique (MOST), Define – Measure – Analyze – Improve – Control (DMAIC) cycle and work elements would be used to detect waste and non-value added, improving, and decreasing production time while ensuring product quality. As a good practical result, units per hour (UPH) factor increased from 48 to 90, units person per hour (UPPH) factor from 5.3 to 6.0, and saving the business $28,000 annually.

References 1

Womack, J. P., Jones, D. T., & Roos, D. (1990). The Machine That Changed the World: The Story of Lean Production. Free Press.

Kusumawardani, R.; Ana; Singgih, M.L. (2025). Achieving Manufacturing Excellence Using Lean DMAIC. Eng. Proc.,84,7.https://doi.org/10.3390/engproc2025084007.

Imai, M. (1986). Kaizen: The Key to Japan's Competitive Success. McGraw-Hill.

Shah, R., & Ward, P. T. (2003). Lean manufacturing: Context, practice bundles, and performance. Journal of Operations Management, 21(2), 129-149.

Radnor, Z., & Walley, P. (2008). Learning to walk before we try to run: Adapting Lean for the public sector. Public Money & Management, 28(1), 13-20.

Bhasin, S. (2012). Lean principles and their application. International Journal of Production Research, 50(4), 1295-1306.

Liker, J. K. (2004). The Toyota Way: 14 Management Principles from the World's Greatest Manufacturer. McGraw-Hill.

George, M. L. (2002). Lean Six Sigma: Combining Six Sigma with Lean Speed. McGraw-Hill.

Pande, P. S., Neuman, R. P., & Cavanagh, R. R. (2000). The Six Sigma Way: How GE, Motorola, and Other Top Companies are Honing Their Performance. McGraw-Hill.

Pyzdek, T., & Keller, P. A. (2014). The Six Sigma Handbook: A Complete Guide for Green Belts, Black Belts, and Managers at All Levels. McGraw-Hill Education.

Snee, R. D., & Hoerl, R. W. (2003). Leading Six Sigma: A Step-by-Step Guide Based on Experience with GE and Other Six Sigma Companies. FT Press.

Linderman, K., Schroeder, R. G., Zaheer, S., & Choo, A. S. (2003). Six Sigma: A goal-theoretic perspective. Journal of Operations Management, 21(2), 193-203.

Dangayach, G. S., Deshmukh, S. G., & Shinde, S. (2019). Industry 4.0 and Lean Six Sigma: Synergies, trends, and challenges. International Journal of Production Research, 57(7), 2028-2044.

Pongboonchai-Empl, T., Antony, J., Garza-Reyes, J. A., Tortorella, G. L., Komkowski, T., & Stemann, D., (2025), DMAIC 4.0 - innovating the Lean Six Sigma methodology with Industry 4.0 technologies. Production Planning & Control, 1–22. https://doi.org/10.1080/09537287.2025.2477724

Lam NT et al. (2016) Lean line balancing for an electronics assembly line. Procedia CIRP 40:437–442

Ashwin Bhimrao Ganorkar, Ramesh R. Lakhe, Kamalkishor N. Agrawal, Methodology for application of Maynard Operation Sequence Technique (MOST) for time-driven activity-based costing (TDABC), International Journal of Productivity and Performance Management, Volume 68, Issue 1, 2019, Pages 2-25, ISSN 1741-0401, https://doi.org/10.1108/IJPPM-06-2017-0156.

Chan Chi On, Lau Henry, Fan Youqing, The role of Yamazumi chart in lean standardisation: modelling and analysis using performance loss function, International Journal of Productivity and Quality Management, 2023, DOI: 10.1504/IJPQM.2023.130187

Keith Beven, Ann Kretzschmar, UPH Problem 20 – reducing uncertainty in model prediction: a model invalidation approach based on a Turing-like test, Proceedings of the International Association of Hydrological Sciences, April 2024, 385:129-134.

Ankesh Mittal, Pardeep Gupta, Vimal Kumar, Ali Al Owad, Seema Mahlawat, Sumanjeet Singh, The performance improvement analysis using Six Sigma DMAIC methodology: A case study on Indian manufacturing company, Heliyon, Volume 9, Issue 3, 2023, e14625, ISSN 2405-8440, https://doi.org/10.1016/j.heliyon.2023.e14625.