Sriyani, Sriyani (2006) Analisis Bayesian Untuk Penentuan Waktu Penggantian Terencana Optimal. Masters thesis, Institut Teknologi Sepuluh November.
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Abstract
Setiap komponen yang dioperasikan, dalam hal ini usia pakai mata pahat, laju kemsakannya (hazard rate) semakin meningkat sesuai usia pakai mata pahat dan kondisi lingkungan operasional dimana komponen tersebut bekeija. Dalam penerapannya dibidang industri, basil analisis reliabilitas biasanya digunakan untuk menentukan strategi penggantian terencana yang optimal. Langkah pertama adalah menguji distribusi usia pakai mata pahat yang paling sesuai dengan cara deskriptif dan inferensi. Dalam penelitian ini didapatkan distribusi Weibull dua parameter. Langkah selanjutnya menaksir parameterparameter distnbusi dengan 2 metode, yang pertama karena banyak:nya data terbatas, maka untuk meningkatkan ketelitian digunakan metode Bayes yang kedua dengan mempertimbangkan pengaruh lingkungan operasional (variabel kovariat) maka digunakan metode Model Hazards Proporsional. Kedua metode tersebut chbandingkan untUk mendapatkan waktu penggantian mata pahat yang paling optimal. Hasil penelitian temyata metode terbaik yang dapat dignnakan untuk menentukan waktu penggantian usia pakai pahat yang paling optimal adalah metode Bayes dengan waktu penggantian optimal adalah 32,9411menit dan biaya penggantian pahat sebesar $7,3663.
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For every operated components, in case of chisel blade service life, it's hazards rate increases as chisel blades service life and operational environment where it works. In it's industrial application, reliability analysis result is usually used to determine optimum planned changing strategy. First step is examining the most suitable distribution of chisel blade service life to descriptive and inferent ways. Two-parameters Weibull distribution is obtained in this study. The next step is to appraise distribution parameter with two methods, first is, for limited data amount, to increase precision, Bayes method is used, second, considering operational environment effect (covariate variable) Proportional Hazards method is used From those two mwthods, the results then compared to attain most optimum chisel blade changing time. Best method gained from the study in determining optimum chisel blade changing time is hayes method with optimum changing time 32,9411 minutes and chisel changing cost$ 7,3663.
| Item Type: | Thesis (Masters) |
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| Additional Information: | RTSt 519.542 Sri a |
| Uncontrolled Keywords: | Reliabilitas, waktu penggantian optimal, hazard rate, metode Bayes, variabe/ kovariat, Model Hazards Proporsional, Reliability, optimum changing time, hazards rate, Bayes method, covariate variables, Proportional Hazards Method |
| Subjects: | Q Science > QA Mathematics > QA279.5 Bayesian statistical decision theory. |
| Divisions: | Faculty of Mathematics and Science > Statistics > 49101-(S2) Master Thesis |
| Depositing User: | magang . |
| Date Deposited: | 01 Oct 2026 02:27 |
| Last Modified: | 01 Oct 2026 02:27 |
| URI: | http://repository.its.ac.id/id/eprint/145118 |
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