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Journal : Scripta Technica: Journal of Engineering and Applied Technology

Analisis Penyebab Ketidaksesuaian Barang di Inventory dengan Aktual: Studi Kasus pada Perusahaan X Menggunakan Metode RCA Muhammad Zidan Inprasepta; Aldi Allaudin; Nandana Malik Prayata; Anugrah Ramadhani Hidayah Warman; Yudi Prastyo
Journal of Engineering and Applied Technology Vol 1 No 2 (2025): December: Scripta Technica: Journal of Engineering and Applied Technology
Publisher : CV SCRIPTA INTELEKTUAL MANDIRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65310/wcwdg927

Abstract

This study examines stock accuracy performance, customer complaints, and the alignment between demand and fulfillment within a six-month operational period in order to identify the dominant factors contributing to inventory discrepancies. The findings show that variations in stock accuracy are closely related to nonstandard placement practices, non-real-time documentation, and inconsistencies in material movement across warehouse areas. Customer complaint records indicate recurring issues regarding wrong motif, wrong color, and shortage of delivered units, demonstrating that operational errors still play a substantive role. Additional analysis of demand and fulfillment across multiple ceramic sizes highlights that several product categories experience recurring gaps between requested and supplied quantities, particularly in the 60×60 WB variant. Root cause identification through a Pareto approach further reveals that human error, mixed materials in pallets, and misalignment between actual transfer and recorded data represent the largest contributors to overall discrepancies. These insights underscore the importance of strengthening warehouse discipline, enhancing personnel capability, and standardizing control mechanisms to ensure reliable inventory performance. The study concludes that structured interventions and continuous monitoring are required to maintain a stable and accurate stock management system.
Tinjauan Literatur tentang Upaya Optimalisasi Waktu Pergantian Mold Menggunakan SMED (Single Minute Exchange of Dies) Dionisius Tegar Cahyadi; Wijayanto, Wijayanto; Riska Anggun Sucianingrum; Agus Yoga Nafasa; Muhamad Annur; Yudi Prastyo
Journal of Engineering and Applied Technology Vol 1 No 2 (2025): December: Scripta Technica: Journal of Engineering and Applied Technology
Publisher : CV SCRIPTA INTELEKTUAL MANDIRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65310/0pd0n328

Abstract

This study presents a qualitative literature review on efforts to optimize mold changeover time through the implementation of the Single Minute Exchange of Dies (SMED) method in manufacturing industries, particularly injection molding processes. The review synthesizes findings from national and international studies published between 2020 and 2025 to identify common problems, implementation strategies, and performance impacts of SMED. The results indicate that prolonged mold changeover time is a major contributor to machine downtime and productivity loss, mainly caused by non-standardized procedures, poor preparation, and the dominance of internal setup activities. The implementation of SMED consistently demonstrates significant reductions in setup time by separating internal and external activities, simplifying work steps, and standardizing operating procedures. Furthermore, the literature reveals that SMED contributes to improvements in production output, equipment utilization, cost efficiency, and process stability. The findings also highlight the importance of operator involvement and managerial commitment to ensure sustainable results. Overall, this review confirms that SMED is a flexible and effective approach for enhancing manufacturing performance and supporting continuous improvement initiatives.
Analisis Akar Masalah Noise pada Instrument Panel (Dashboard) Kendaraan Menggunakan Pendekatan Why-Why Analysis dan Fishbone Diagram Sifha Awaludin; Muh Amirudin; Yudi Prastyo
Journal of Engineering and Applied Technology Vol 1 No 2 (2025): December: Scripta Technica: Journal of Engineering and Applied Technology
Publisher : CV SCRIPTA INTELEKTUAL MANDIRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65310/t7frmw90

Abstract

Noise issues in vehicle instrument panels remain a critical challenge in automotive interior quality, particularly in the form of rattle and squeak phenomena that affect customer perception and product reliability. This study examines the root causes of instrument panel noise through an integrated application of Why-Why Analysis and Fishbone Diagram. The research is based on an in-depth analysis of documented manufacturing practices, dimensional variability, material behavior, and assembly conditions commonly encountered in automotive production. The findings indicate that noise generation is primarily driven by inconsistent dimensional gaps resulting from process variability rather than design deficiencies alone. Why-Why Analysis reveals that inadequate fixture maintenance, inconsistent adherence to standard operating procedures, and limited sensitivity in quality control systems represent the most dominant root causes. The Fishbone Diagram further demonstrates how human factors, equipment condition, material characteristics, measurement limitations, assembly methods, and environmental conditions interact to amplify noise risks. By combining both analytical approaches, the study provides a comprehensive understanding of the mechanisms behind instrument panel noise and highlights the importance of holistic process control and continuous improvement strategies to achieve sustainable NVH performance.