Mayasari, Rakhmah Wahyu (2016) Analisis Kualitas Statistika Produksi Billet Di PT. X - Quality Statistical Analysis Of Billet Production At PT. X. Diploma thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
PT. X adalah perusahaan yang memproduksi billet, dimana billet
yang dihasilkan memiliki dua karakteristik yang saling
berhubungan yaitu non metallic inclusion dan grain size.
Pemeriksaan kualitas telah dilakukan oleh perusahaan ini, akan
tetapi hanya berdasarkan batas spesifikasi, oleh karena itu
dilakukan pengendalian kualitas statistika untuk mengetahui
proses produksi billet telah stabil/terkendali secara statistik atau
tidak, serta untuk menemukan penyebab ketidaksesuaian pada
proses produksi. Pengendalian kualitas yang dilakukan adalah
Generalized Variance untuk mengendalikan varians, T2 Hotelling
untuk mengendalikan rata-rata, serta kapabilitas proses untuk
mengetahui apakah proses produksi telah kapabel atau tidak.
Berdasarkan analisis yang telah dilakukan didapatkan hasil
bahwa proses produksi billet periode bulan Januari, Februari, dan
Maret 2016 telah terkendali dengan asumsi tidak terjadinya
penyebab out of control, serta hasil proses produksi billet tidak
kapabel.
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PT. X is a company produces billet, where its product has two
quality characteristics dependently, which are non metallic
inclusion and grain size. Quality control has been done here, but
based on its specification limits only, therefore by knowing the
billet production is statistically in control or not and to find the
cause of the unconforming products, statistical quality control is
needed. Generalized variance is used for quality controlling based
on the variance, T2 Hotelling based on the mean, and also
capability process to know whether the process is capable or not.
Based on the analysis,it’s given that the production process in
January until March 2016 is statistically in control, with an
assumption that there aren’t out of control causes but the
capability process shows that the production process isn’t capable.
| Item Type: | Thesis (Diploma) |
|---|---|
| Additional Information: | RSSt 519.86 May a |
| Uncontrolled Keywords: | Generalized Variance, Kapabilitas Proses, T2 Hotelling, Capability Process, Generalized Variance, T2 Hotelling |
| Subjects: | T Technology > TS Manufactures > TS156 Quality Control. QFD. Taguchi methods (Quality control) |
| Divisions: | Faculty of Mathematics and Science > Statistics > 49401-(D3) Diploma 3 |
| Depositing User: | ansi aflacha |
| Date Deposited: | 06 Jan 2020 07:17 |
| Last Modified: | 06 Jan 2020 07:17 |
| URI: | http://repository.its.ac.id/id/eprint/72546 |
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