Pengendalian Kualitas Kaca Planibel G FL 5.0 Menggunakan Peta Kendali MEWMA dan MEWMV

Prijantoro, Adani Nauval (2023) Pengendalian Kualitas Kaca Planibel G FL 5.0 Menggunakan Peta Kendali MEWMA dan MEWMV. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Kaca Planibel G tipe FL 5.0 banyak digunakan pada bangunan. Dalam pembuatan kaca, kualitas harus diperhatikan mengingat kaca yang berkualitas buruk dapat membahayakan orang yang berada di dalam atau luar bangunan. Pemeriksaan hasil fisik kaca cenderung dilakukan pada atribut kaca dengan memeriksa apakah terjadi cacat seperti perbedaan warna, goresan, dan lain-lain. Padahal disamping itu kaca juga memiliki ketebalan serta distorsi kanan-kiri. Pada penelitian ini dilakukan pemeriksaan terhadap variabel tersebut menggunakan peta kendali MEWMA dan MEWMV. Pada peta kendali MEWMV fase pertama didapatkan pembobot optimum ω=0,4 dan λ =0,1 yang dapat menunjukkan adanya pengamatan out of control dibandingkan nilai pembobot lain. Dengan menggunakan pembobot tersebut didapatkan 2 pengamatan out of control pada fase kedua. Pada perhitungan peta kendali MEWMA didapatkan nilai pembobot λ=0,1 yang memiliki sensitivitas paling tinggi dibanding pembobot lainnya. Pada fase pertama ditemukan 7 out of control pada pengamatan awal dan 2 out of control pada proses revisi peta kendali. Dengan menggunakan matriks kovarian pada pengamatan fase 1 yang telah terkendali, pada fase 2 ditemukan 19 pengamatan out of control dan 6 out of control lain pada proses perbaikan peta kendali. Didapatkan nilai MC_pk fase 1 sebesar 1,386 dan fase 2 sebesar 1,459 yang menunjukkan proses telah kapabel dengan spesifikasi yang diberikan perusahaan.
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Planibel G FL 5.0 Glass was recently used for many buildings. The quality of glass always have to be checked.. The inspection focused at the glass physical attributes such as checking for scratches, glass’s color, etc. Another inspection held to check the thickness, weight, size, and distortion. But in this case the inspection held only to record the value. In this research the statistical quality control will be performed using MEWMA and MEWMV control chart. The variable used in this research the thickness, left distortion, and right distortion of the glass. The optimum weighting for MEWMV chart were ω=0.4 and λ=0.1 which detects out of control signal compared to another weighting value. At the second phase another 2 out of control signal were also detected. This mean that the process variability were out of control for the 1st and 2nd phase. The best weighting obtained for MEWMA control chart were λ=0.1 which detect more out of control signal compared to another weighting value. At the first phase 7 out of control signal detected. Another 2 out of control signal were detected at the 1st and 2nd revision. With the 1st phase covariance matrix used for the 2nd phase 19 out of control signal were detected. Another 6 out of control signal were detected at the 1st and 2nd revision. The multivariate capability (MCpk) score were 1.386 for the 1st phase and 1.459 for the 2nd phase which means the produced glasses have been capable with the specification given by the company.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Analisis Multivariat, Glass, Kaca, MEWMV Control Chart, Multivariate Analysis, Pengendalian Kualitas Statistik, Peta Kendali MEWMA, Peta Kendali MEWMV, Statistical Quality Control
Subjects:	H Social Sciences > HA Statistics H Social Sciences > HD Industries. Land use. Labor > HD9980.5 Service industries--Quality control.
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Statistics > 49201-(S1) Undergraduate Thesis
Depositing User:	Adani Nauval Prijantoro
Date Deposited:	18 Sep 2023 02:49
Last Modified:	18 Sep 2023 02:49
URI:	http://repository.its.ac.id/id/eprint/104362

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