Inventory Model for the Batch Processing of Defective Products in Manufacturing and Remanufacturing

2013 ◽  
Vol 756-759 ◽  
pp. 4604-4611 ◽  
Author(s):  
Chi Chung Lin ◽  
Chwen Tzeng Su
Keyword(s):  
New Products ◽  
Batch Processing ◽  
Inventory Model ◽  
Rate Of Return ◽  
Economic Order Quantity ◽  
Economic Order ◽  
Inventory Level ◽  
Order Quantity ◽  
Product Returns ◽  
Optimal Inventory Level

This study focuses on simple stationary demand satisfied by the remanufacturing of products and the manufacture of new products. Further, we presented how to use batch processing to reduce defective products in the remanufacturing and the manufacturing inventory. In this paper, we obtain the economic order quantity of new products and the optimal inventory level of products that have been remanufactured as well as the appropriate return rate for the economic order quantity and the economic remanufacturing quantity. We analyze an inventory system with unit product returns and demands wherein manufacturing is the cheaper alternative to remanufacturing. However, because demand exceeds the rate of return of defective products, remanufacturing of products is also required.

A Generalized Economic Order Quantity Inventory Model with Shortage: Case Study of a Poultry Farmer

2018 ◽  
Vol 44 (3) ◽  
pp. 2653-2663 ◽  
Author(s):  
Amir Hossein Nobil ◽  
Amir Hosein Afshar Sedigh ◽  
Leopoldo Eduardo Cárdenas-Barrón
Keyword(s):  
Inventory Model ◽  
Economic Order Quantity ◽  
Economic Order ◽  
Order Quantity

scholarly journals PENERAPAN DARI MODEL MATEMATIKA PENGENDALIAN PERSEDIAAN BARANG (INVENTORY MODEL) PADA SISTEM PRODUKSI DI PD. HANDI MEUBEL CIREBON

2017 ◽  
Vol 1 (2) ◽  
pp. 11
Author(s):  
Herri Sulaiman ◽  
Wahyu Hartono ◽  
Jajo Firman Raharjo
Keyword(s):  
Inventory Model ◽  
Economic Order Quantity ◽  
Economic Order ◽  
Order Quantity ◽  
Holding Cost

Penelitian ini bertujuan untuk mengetahui model pengendalian persediaan atau dikenal dengan istilah Economic Order Quantity (jumlah pemesanan ekonomis) dan dapat diterapkan pada sistem produksi di PD Handi Meubel Cirebon. Pengendalian persediaan sangat penting diterapkan oleh suatu perusahaan karena dapat meminimalkan biaya persediaan. PD Handi Meubel telah melakukan perhitungan dengan rumus umum total biaya persediaan. Lebih lanjut, peneliti mencoba memberikan model perhitungan dengan model Economic Order Quantity (EOQ) yang dapat memberikan keputusan tentang jumlah pemesanan. Hasil pengendalian persediaan pada PD Handi Meubel belum ekonomis karena besar biaya pemesanan (annual ordering cost) dan biaya penyimpanan (annual holding cost) tidak relatif sama. Hal ini menyebabkan total persediaan tidak mampu mencapai nilai minimum. Penerapan model EOQ dapat memberikan solusi kepada PD Handi Meubel karena total persediaan dari perusahaan tersebut dapat mencapai nilai minimum. Ketentuan pemesanan diperoleh dari hasil perhitungan menggunakan persamaan model EOQ yang dikenal dengan istilah Wilson Formula. Tujuan jangka panjang dari penelitian ini bagi prodi pendidikan matematika yaitu sebagai desain bahan ajar pada materi atau pokok bahasan yang ada di dalam mata kuliah Kalkulus Diferensial yang berbasis pada model pengembangan bahan ajar tertentu sehingga diharapkan dapat membantu mahasiswa dalam memahami konsep-konsep esensial yang ada di dalam mata kuliah tersebut, sehingga kebutuhan belajar mahasiswa dapat terpenuhi dengan baik. Target luaran yang diharapkan terlaksana setelah penelitian ini dilakukan yaitu mempublikasikan hasil penelitian ini melalui publikasi ilmiah, prosiding, dan pengayaan bahan ajar. Dengan demikian diharapkan hasil penelitian ini dapat bermanfaat secara luas bagi perusahaan dan mahasiswa. Metode penelitian yang digunakan adalah metode observasi dengan sistem wawancara terhadap kepala produksi di PD Handi Meubel Cirebon.

On Optimal Inventory Model for Obsolescence Perishable Products under Unpermitted-Stockout

2011 ◽  
Vol 201-203 ◽  
pp. 1292-1295
Author(s):  
Xiao Liang Xie
Keyword(s):  
Optimal Solution ◽  
Inventory Model ◽  
Economic Order Quantity ◽  
Inventory Level ◽  
Order Quantity ◽  
Short Life ◽  
Numerical Examples ◽  
Fast Change ◽  
Demand Rate ◽  
Long Life

With the advancement of science and technology and the fast change of buyer requirements, the short-life products have been shortened at large, some formerly long-life products gradually turn to value deterioration products. The ratio of value deterioration products to modern products is getting higher and higher. This paper develops a deterministic economic order quantity EOQ inventory model, where the demand rate depends on the on-hand inventory when inventory level exceeds certain quantity , otherwise the demand rate is constant. The effects of obsolescence are taken into account, for it is related to the demand rate. The results are discussed through two numerical examples. A sensitivity analysis of the optimal solution with respect to parameters of the system is carried out.

scholarly journals ANALISIS DAN PERANCANGAN SISTEM INFORMASI DENGAN INTRANET: STUDI KASUS PERSEDIAAN MATERIAL PT BALFOUR BEATTY SAKTI INDONESIA

2007 ◽  
Vol 1 (1) ◽  
pp. 95
Author(s):  
Suparto Darudiato ◽  
Krisma Punta
Keyword(s):  
Information System ◽  
Object Oriented ◽  
Inventory Model ◽  
Economic Order Quantity ◽  
Economic Order ◽  
Problem Solution ◽  
Order Quantity ◽  
Safety Stock ◽  
Analysis And Design

Article discuss problem faced by PT Balfour Beatty Sakti Indonesia (PT BBSI), which is lack planning ofmaterial inventory supply. Inventory was bought overly as safety stock. That caused inventory stacking so the companyoperation less efficient and caused damage on the material itself. The inventory model will be used to overcome theproblem is Periodic Order Quantity (POQ) model that was develop from Economic Order Quantity (EOQ) basic model.The proposed problem solution will be applied in inventory information system in form of analysis and design of materialinventory information system object oriented using Mathiassen approach.Keywords: information system, inventory, intranet, material

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