ANALISIS PENGENDALIAN KUALITAS PRODUK JIG CROS MENGGUNAKAN METODE SEVENTOOL DAN FAILURE MODE EFFECT ANALYSIS (FMEA) (STUDI KASUS : CV TRISTAR MANDIIRI)

Nugroho, Rizal Husain and Yuamita, Ferida (2025) ANALISIS PENGENDALIAN KUALITAS PRODUK JIG CROS MENGGUNAKAN METODE SEVENTOOL DAN FAILURE MODE EFFECT ANALYSIS (FMEA) (STUDI KASUS : CV TRISTAR MANDIIRI). Tugas Akhir thesis, University of Technology Yogyakarta.

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Abstract

Abstrak Dalam industri manufaktur, pengendalian kualitas merupakan aspek krusial dalam menjaga konsistensi produk dan memenuhi kepuasan pelanggan. CV Tristar Mandiri menghadapi permasalahan berupa cacat produk jig cross, khususnya pada aspek dimensi dan permukaan, yang memengaruhi performa produk akhir. Penelitian ini bertujuan untuk menganalisis faktor penyebab cacat dan memberikan usulan perbaikan melalui penerapan metode Seven Tools dan Failure Mode and Effect Analysis (FMEA). Data dikumpulkan selama periode 11 Februari hingga 11 Maret 2025, mencatat 10 dari 50 unit jig cross mengalami cacat (dimensi: 3 unit, permukaan: 7 unit). Metode Seven Tools digunakan untuk menganalisis pola cacat melalui alat seperti check sheet, diagram pareto, histogram, scatter diagram, peta kendali, dan diagram fishbone. Hasil analisis menunjukkan bahwa cacat permukaan merupakan jenis cacat dominan (70%). Selanjutnya, metode FMEA digunakan untuk mengidentifikasi dan mengevaluasi risiko kegagalan. Nilai Risk Priority Number (RPN) tertinggi untuk cacat dimensi adalah 144 yang disebabkan oleh kesalahan pembacaan gambar teknik oleh operator, sedangkan untuk cacat permukaan adalah 144 akibat penggunaan tools yang tumpul. Usulan perbaikan meliputi pelatihan operator, kalibrasi alat ukur secara berkala, perawatan mesin CNC, serta standardisasi prosedur kerja. Dengan penerapan usulan tersebut, diharapkan CV Tristar Mandiri dapat menekan jumlah cacat produk dan meningkatkan kualitas produksi secara berkelanjutan. Kata Kunci: Pengendalian kualitas, Seven Tools, FMEA, RPN. Abstract In the manufacturing industry, quality control is a crucial aspect in maintaining product consistency and meeting customer satisfaction. CV Tristar Mandiri faces problems in the form of defects in jig cross products, especially in the dimensions and surface aspects, which affect the performance of the final product. This study aims to analyze the factors causing defects and provide improvement suggestions through the application of the Seven Tools method and Failure Mode and Effect Analysis (FMEA). Data collected during the period of February 11 to March 11, 2025, recorded 10 out of 50 jig cross units had defects (dimensions: 3 units, surfaces: 7 units). The Seven Tools method was used to analyze defect patterns through tools such as check sheets, Pareto diagrams, histograms, scatter diagrams, control charts, and fishbone diagrams. The results of the analysis showed that surface defects were the dominant type of defects (70%). Furthermore, the FMEA method was used to identify and evaluate the risk of failure. The highest Risk Priority Number (RPN) value for dimensional defects was 144 caused by errors in reading engineering drawings by operators, while for surface defects it was 144 due to the use of blunt tools. Proposed improvements include operator training, regular calibration of measuring instruments, CNC machine maintenance, and standardization of work procedures. By implementing these recommendations, CV Tristar Mandiri is expected to reduce the number of product defects and continuously improve production quality. Keywords: Quality control, Seven Tools, FMEA, RPN.

Item Type:	Thesis (Skripsi, Tugas Akhir or Kerja Praktek) (Tugas Akhir)
Subjects:	T Technology > TS Manufactures
Divisions:	Fakultas Sains dan Teknologi > S1 Teknik Industri
Depositing User:	Kaprodi S1 Teknik Industri UTY
Date Deposited:	19 Dec 2025 05:20
Last Modified:	19 Dec 2025 05:20
URI:	http://eprints.uty.ac.id/id/eprint/19555

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