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All Journal Jurnal Teknik Industri : Jurnal Hasil Penelitian dan Karya Ilmiah dalam Bidang Teknik Industri
Nurlaela, Adinda
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Computer Science & IT Decision Sciences, Operations Research & Management Engineering Environmental Science Industrial & Manufacturing Engineering

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Integrating DMAIC Six Sigma for Systematic Defect Analysis and Quality Improvement in Manufacturing (Case Study: Rattan Craft Industries) Nurlaela, Adinda; Fauzi, Muchammad
JTI: Jurnal Teknik Industri Vol 11, No 1 (2025): JUNI 2025
Publisher : Universitas Islam Negeri Sultan Syarif Kasim Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24014/jti.v11i1.35323

Abstract

This study focuses on a rattan-based manufacturing unit producing Base Plant Stand products, where a significant number of defects—2,305 units out of 9,000—were identified, resulting in a current sigma level of 3.14. By employing qualitative and quantitative research approaches, the study aims to identify root causes of product defects and propose process improvements to minimize their occurrence. Using the DMAIC framework of Six Sigma, the most frequent defect types were mold (27.9%), imprecision (22.7%), loose tie (20.9%), and pinhole (15.88%). Key contributing factors included excessive humidity, limited production space, insect infestation, and insufficient operator skills. Based on field research and literature, the proposed improvements include covering products with tarpaulins during rainy conditions, expanding work-in-progress (WIP) space, providing operator training, and developing clear standard operating procedures (SOPs). These recommendations aim to enhance product quality and increase the sigma level through systematic, continuous improvement. The findings are a practical reference for similar small-scale manufacturing operations seeking to optimize their production processes through quality management tools.Keywords: Six Sigma, DMAIC, 5W+1H, Product Defects, Rattan
Co-Authors Muchammad Fauzi