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Penerapan Improved Generalized Variance pada Pengendalian Kualitas Produksi Paving Block Segienam

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ABSTRAK
Dalam penjaminan kualitas dari produk paving block segienam perlu dilakukan pengendalian kualitas agar produk yang dihasilkan sesuai dengan standar yang ditentukan. Pengendalian kualitas yang dilakukan melibatkan dua karakteristik kualitas yang saling berhubungan, yaitu ketebalan dan berat dari paving block segienam sehingga digunakan diagram kontrol multivariat. Diagram kontrol Improved Generalized Variance merupakan alat yang digunakan untuk mengendalikan variabilitas proses secara multivariat. Variabilitas perlu dikendalikan karena dalam suatu proses produksi terkadang muncul variabilitas yang disebabkan oleh masalah mesin, kesalahan operator, dan kecacatan bahan baku yang berpengaruh terhadap proses tersebut. Tujuan dari penelitian ini adalah menerapkan diagram kontrol Improved Generalized Variance dalam mengendalikan kualitas produksi paving block segienam serta menghitung kemampuan proses produksi dalam memenuhi standar. Berdasarkan uji asumsi distribusi normal multivariat dapat diketahui bahwa data karakteristik kualitas paving block segienam berdistribusi nomal multivariat. Sedangkan berdasarkan uji korelasi antar variabel dapat disimpulkan bahwa karakteristik kualitas ketebalan dan berat saling berkorelasi. Hasil pengendalian menggunakan diagram kontrol tersebut menunjukkan bahwa proses sudah terkendali secara statistika. Hasil analisis kemampuan proses menunjukkan bahwa proses produksi telah berjalan sesuai dengan standar karena nilai indeks kapabilitas proses yang dihasilkan dengan menggunakan pembobot sebesar 0,5 untuk masing-masing karakteristik kualitas yaitu 1,01517.

Kata Kunci: Paving Block, Pengendalian Kualitas, Variabilitas, Improved Generalized Variance, Analisis Kemampuan Proses

ABSTRACT
In quality assurance of hexagonal paving block products, quality control is needed so the products that produced are in accordance with the specified standards. Quality control carried out involves two interconnected quality characteristics, that is thickness and weight of hexagonal paving blocks, so multivariate control chart is used. Improved Generalized Variance control chart is a tool used to control process variability in multivariate manner. Variability needs to be controlled because of in a production process, sometimes there are variabilities that caused by engine problems, operator errors, and deffect in raw materials that affect the process. The purpose of this study is to apply Improved Generalized Variance control chart in controlling the quality of hexagonal paving block products and calculating the capability of production process to meet the standards. Based on the assumption of multivariate normal distribution test, it can be seen that the data of quality characteristics of hexagonal paving blocks have multivariate distribution. While based on the correlation test between variables it can be concluded that the characteristics of the quality of thickness and weight correlate with each other. The result of the control using these control chart shows that the process is statistically in control. The results of process capability analysis show that the production process has been running according to the standard because the process capability index value is generated using a weighting of 0.5 for each quality characteristic that is 1.01517.

Keywords: Paving Block, Quality Control, Variability, Improved Generalized Variance, Process Capability Analysis

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Ketersediaan

712E19III

712 E 19-ii

Perpustakaan FSM Undip (Referensi)

Tersedia

Informasi Detail

Judul Seri

STATISTIKA

No. Panggil

712 E 19-ii

Penerbit

: ., 2019

Deskripsi Fisik

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Bahasa

Indonesia

ISBN/ISSN

-

Klasifikasi

511-8

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

-

Subjek

-

Info Detail Spesifik

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Pernyataan Tanggungjawab

Nathasa Erdya Kristy

Versi lain/terkait

Lampiran Berkas

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