Anky, Alicia Mutiara (2017) Analisis Kapabilitas Proses Ex-Mixer pada Produk BR 1 SP Crumble di PT. Japfa Comfeed Indonesia Tbk. Unit Buduran. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
PT. Japfa Comfeed Indonesia Tbk dapat dikatakan sebagai perusahaan Pakan ternak terintegrasi terbesar di Indonesia. Salah satu produk terbesar dari perusahaan ini adalah BR 1 SP Crumble. Crumble adalah pellet yang dipecah 2-3 bagian. Kualitas pellet yang baik diukur dengan Pellet Durability Index (PDI). Salah satu faktor yang memengaruhi nilai PDI adalah ukuran partikel pada proses ex-mixer. Ukuran partikel terbagi menjadi tiga jenis karakteristik kualitas ukuran, yaitu : mesh 10 (ukuran 2mm), mesh 18 ( ukuran 1 mm), dan fine (tepung). Hasil produksi pada bulan November-Desember 2016 menunjukkan masih banyak ukuran partikel yang tidak memenuhi batas spesifikasi perusahaan. Sehingga perlu dilakukan monitoring proses baik pada variabilitas ataupun target proses. Pada penelitian ini digunakan diagram kendali Multivariate Exponentially Weighted Moving Variance (MEWMV) dengan pengamatan individual untuk mendeteksi perubahan variabilitas proses. Sedangkan monitoring target proses produksi dilakukan dengan menggunakan diagram kendali Multivariate Exponentially Weighted Moving Average (MEWMA). Hasil yang didapat baik variabilitas maupun mean proses belum terkendali secara statistik dengan menggunakan nilai pembobot ω dan λ sebesar 0,1-0,9. Variabel yang diduga sebagai penyebab kecacatan pada variabilitas proses adalah Mesh 18 dan Fine, sedangkan pada target proses adalah variabel Mesh 10. Kapabilitas proses menggunakan MPpk menunjukkan proses telah kapabel. Nilai MPpk sebesar 2,06 menunjukkan bahwa presisi dan akurasi proses telah baik.
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PT. Japfa Comfeed Indonesia Tbk is one of the largest integrated forage company in Indonesia. One of the biggest products of this company is BR 1 SP Crumble. Crumble is a pellet that split 2 to 3 parts. The quality of pellet is measured by the Pellet Durability Index (PDI). One of the factors that affecting the PDI value is the particle size in the Ex-Mixer process. Particle size is divided into three types of of size, namely: mesh 10 (size 2mm), mesh 18 (size 1 mm), and fine (flour). The production in November-December 2016 shows that there are still many particle sizes that is not appropriate with the company's specifications. So it is necessary to monitor the process either on variability or mean process. In this study used Multivariate Exponentially Weighted Moving Variance (MEWMV) control charts with individual observations to detect changes in process variability. While the process target of production process is monitored by using Multivariate Exponentially Weighted Moving Average (MEWMA) control chart. The results of both process variability and target have not been statistically controlled using weighted value ω and λ equal to 0.1-0.9. The variables that are suspected to cause defects in process variability are Mesh 18 and Fine, while in the process target is the Mesh 10. The process capability analysis using MPpk shows the process has good capability. MPpk value of 2.06 indicates that the precision and accuracy of the process has been good.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSSt 519.535 Ank a |
| Uncontrolled Keywords: | Fine, Kapabilitas, MEWMA, MEWMV, Mesh 10, Mesh 18, Ukuran Partikel, Capability, Particle Size |
| Subjects: | H Social Sciences > HA Statistics T Technology > TS Manufactures > TS156 Quality Control. QFD. Taguchi methods (Quality control) |
| Divisions: | Faculty of Mathematics and Science > Statistics > 49201-(S1) Undergraduate Thesis |
| Depositing User: | Alicia Mutiara Anky |
| Date Deposited: | 25 Oct 2017 07:43 |
| Last Modified: | 05 Mar 2019 03:32 |
| URI: | http://repository.its.ac.id/id/eprint/48575 |
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