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All Journal Jurnal Teknik Industri USU Jurnal Sistem dan Manajemen Industri PRODUCTUM : Jurnal Desain Produk (Pengetahuan dan Perancangan Produk) JOURNAL OF SCIENCE AND SOCIAL RESEARCH Jurnal Ilmiah Teknik Industri Jurnal Sistem Teknik Industri JURNAL PENGABDIAN AGRO AND MARINE INDUSTRY Jurnal Pengabdian Masyarakat Ilmu Kesehatan
Aulia Ishak
Departemen Teknik Industri, Fakultas Teknik, Universitas Sumatera Utara
Agriculture, Biological Sciences & Forestry Arts Humanities Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Health Professions Industrial & Manufacturing Engineering Medicine & Pharmacology Nursing Public Health Social Sciences Transportation

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Lean Manufacturing Implementation Through Fuzzy Multi Criteria Decision-Making: A Literature Review Hutagalung, Amelia Hafsah; Ishak, Aulia; Ginting, Rosnani
Jurnal Sistem Teknik Industri Vol. 27 No. 4 (2025): JSTI Volume 27 Number 4 September 2025
Publisher : TALENTA Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jsti.v27i4.20531

Abstract

Lean manufacturing is a systematic approach to reduce waste and increase productivity. In its implementation, lean manufacturing is often faced with complexity in its application due to inappropriate decision-making. Therefore, a more structured approach, such as the integration of the Fuzzy Multi Criteria Decision-Making (FMCDM) method, is a solution to assist decision-making within the lean framework and ensure proper lean implementation. This research aims to explore the application of FMCDM by using a Systematic Literature Review (SLR) approach, successfully analyzing 185 articles published between 2000 and 2025 focusing on integrating FMCDM and lean manufacturing. The results of the literature review show that the integration of FMCDM and lean manufacturing is still limited but has increased since 2023, with FMCDM being used for three primary purposes, namely evaluation of factors and risks in lean implementation, selection of appropriate lean tools and strategies, and assessment of lean level. This research identifies research gaps and offers practical recommendations to improve lean manufacturing effectiveness through a more adaptive and structured decision-making approach. Thus, this research is expected to significantly contribute to developing lean manufacturing theory and practice, particularly in FMCDM-based decision-making.
Combination Between Design for Assembly and Design for Serviceability Method in Concurrent Engineering: A Literature Review Harahap, Akbar Gading Alfadli; Ginting, Rosnani; Ishak, Aulia
Jurnal Sistem Teknik Industri Vol. 28 No. 1 (2026): JSTI Volume 28 Number 1 January 2026
Publisher : TALENTA Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jsti.v28i1.20505

Abstract

Increased competition in the industry encourages companies to focus on customer satisfaction to maintain competitiveness. The combination of Design for Assembly (DFA) and Design for Serviceability (DFS) methods is a common concern for researchers, especially in product development. This research describes the integration of DFA and DFS methods to solve product problems, starting from the method development stage, the interrelationship between the two methods, etc. The successful application of these methods is evident through high efficiency and improved product quality. Key factors involved management cooperation, use of quality tools, and teamwork. Leading journals highlight product cost reduction through Design for Serviceability and DFA techniques. Emphasis on sustainability, especially by integrating sustainability goals in product design, evidenced positive environmental impact and market response. Research also highlighted the need for identification and prioritisation of customer requirements and optimisation of production process parameters. The integration of modelling methods and design systems, such as in the development of a modelling system for metal casting processes, demonstrated success in achieving effective product development goals. Overall, this research provides an in-depth understanding of the potential and benefits of applying DFA and DFS in efficient, high-quality and sustainable product development, providing a foundation for further development and implementation by practitioners and researchers.
Planning of a Preventive Maintenance System for Lathe Machines Using the RCM II and FMECA Adsa, Fattah Fadjrir; Ishak, Aulia; Anizar
Jurnal Sistem Teknik Industri Vol. 28 No. 1 (2026): JSTI Volume 28 Number 1 January 2026
Publisher : TALENTA Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jsti.v28i1.23630

Abstract

Unplanned downtime and ineffective maintenance strategies remain major challenges in improving the reliability of production machinery in manufacturing industries. This study proposes a structured preventive maintenance system for a CW6293 lathe machine by integrating Reliability Centered Maintenance II (RCM II) and Failure Mode, Effects, and Criticality Analysis (FMECA). The novelty of this research lies in the systematic integration of risk-based criticality assessment, statistical reliability modeling, and maintenance task selection to develop an optimized maintenance framework. FMECA is employed to prioritize components based on severity, occurrence, and detection attributes, identifying the gearbox as the most critical component. Reliability analysis using Time Between Failure (TBF) and Time To Repair (TTR) data is conducted to determine appropriate maintenance intervals through Weibull and Normal distribution modeling. The RCM II decision logic is then applied to translate reliability characteristics and failure consequences into specific maintenance actions, namely scheduled discard and scheduled restoration tasks. This integrated approach enables the development of a proactive maintenance system that improves decision-making accuracy, enhances machine reliability, and supports a transition from reactive to risk-based preventive maintenance. The proposed framework demonstrates practical applicability for manufacturing environments and contributes to the advancement of maintenance engineering by combining reliability analysis, criticality evaluation, and structured maintenance policy design.
User-Centered Redesign of Dental Cheek Retractor Using Quality Function Deployment Owen Sebastian; Rosnani Ginting; Aulia Ishak
Jurnal Sistem Teknik Industri Vol. 28 No. 2 (2026): JSTI Volume 28 Number 2 April 2026
Publisher : TALENTA Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jsti.v28i2.25288

Abstract

This study aims to redesign the cheek retractor to enhance patient comfort and clinical efficiency, reducing soft-tissue trauma caused by poor fitting and material rigidity in conventional devices. A two-phase Quality Function Deployment (QFD) approach was applied involving ten dentists to identify user needs. Phase I (House of Quality) translated these needs into technical characteristics, while Phase II mapped the prioritized characteristics to critical components for design improvement. The results showed that QFD Phase I prioritized technical specifications such as product weight and mechanical strength, whereas Phase II prioritized the structural material and the width adjustment mechanism. The improved design utilizes durable PC/ABS material capable of repeated sterilization, effectively reducing tissue trauma, increasing comfort, and providing adjustable fitting for various oral anatomies. Overall, this study offers an innovative, QFD-based framework that directly links the voice of the dentist to engineering specifications to develop ergonomic and user-centered medical instruments.
Co-Authors A. Rahim Matondang Adrian Hartanto, Adrian Adsa, Fattah Fadjrir Aguslina S, Fazidah Alvin Setiawan Amelia, Tia Anizar Anizar Anizar Asfriyanti, Asfriyanti Asfriyati ,MKes Bangun, Putri Syahmina Atirah Chenio, Alkent Christoffel P, junardi Dewi Sari Kencana Dudin, Sa Febi Ardani Halinda Sari Lubis Harahap, Akbar Gading Alfadli Harmein Nasution Heryanto Handoko Hubert, Van Humala L Napitupulu Hutagalung, Amelia Hafsah Khatami, Muhammad Khawarita Siregar M. Sari, Rahmi Malik, Alfin Fauzi Mangara M Mangara M Tambunan Manik, Donald Manurung, Martin Marta Elissa Sirait Matius J Situmorang Maya Fitria Mutia Hasanah Nababan, Poltak Nadia Kurnia Putri Napitupulu, Humala Lodewijk Nasution, Alfian Aziz Nasution, Fadylla Ramadhani Putri Nazaruddin M Nazaruddin Matondang Nova Tarihoran novalin, Susi Diriyanti Nursafwah Owen Sebastian Poltak Nababan Prawira, Yoga Putri Oktalisa Rahmi M Sari Rosnani Ginting Rumapea, Elsa S E Said Munal Akid Sarjana, SS SATRIA Situmorang, Syafrizal Helmi Sri Rahayu Sanusi Sugih Arto Pujangkoro Sukaria Sinulingga Sukaria Sinulingga Syah, Chairul Syahri, Isyatun Mardhiyah Tania Alda Tarigan, Indah Rizkya Ukurta Tarigan Wilianto Wilianto William Arfayo Yos Indra Mardatillah Yuman, Syafiq Alhadi