scholarly journals AN OPTIMIZATION OF FEOQ MODEL FOR WEIBULL DETERIORATING ITEMS WITH INFLATIONARY CONDITION

2019 ◽  
pp. 33-50
Author(s):  
Anu Sayal ◽  
A. P. Singh ◽  
Deepak Aggarwal
Keyword(s):  
Inventory System ◽  
Economic Order Quantity ◽  
Economic Order ◽  
Order Quantity ◽  
Centroid Method ◽  
Time Value Of Money ◽  
Total Cost ◽  
Total Profit ◽  
Time Required ◽  
The Cost

The economic instability is a haunting situation in the present era for the economy. There is a monetary depreciation due to the tremendous increase in the price of the commodities. Present study basically deals with the investigation of the inventory system considering the case of perishable products under inflationary environment under condition of partial backorder. The rate of demand is a function which exponentially increases with increase in inflation and deterioration is taken as a Weibull distributed two parameter function. In the state of shortage when the inventory system runs out of stock an assumption is made that the demands are backlogged or lost. There is a variation in the rate of backlogging which shows this variation as a consequence of lead time required for the arrival of the next replenishment. The deterioration of commodities begins after a fixed interval of time. Present model aims at minimizing the average total cost considering both the crisp and fuzzy environments considering both inflationary effect as well as the time value of money. For the fuzzy economic order quantity (FEOQ) model of the inventory system fuzzification has been done by the use of fuzzy number of the trapezoidal nature. Defuzzification has been done by the use of centroid method. The primary motive of this work is to determine and compare the cost in total of the system of inventory in both crisp and fuzzy environments. The main inference that we can draw from this study is that fuzzy economic order quantity (FEOQ) model has more accuracy as in this model the total cost has been reduced as compared to the crisp model. Thus fuzzy economic order quantity (FEOQ) model is highly beneficial to any sort of inventory system and this result can be further generalized to any sector for enhancing the total profit of the system. Appropriate example has been provided for the illustration of both the models.  

OPTIMALISASI PENGADAAN BAHAN BAKU DALAM RANGKA MEMINIMALKAN TOTAL BIAYA PERSEDIAAN TEMBAKAU PADA PT BENTOEL INTERNATIONAL INVESTAMA DI MALANG

2019 ◽  
Vol 2 (1) ◽  
pp. 23
Author(s):  
Dwi Dayanti Oktavia ◽  
Peni Indarwati ◽  
Marhaerni Fikky Febriananta
Keyword(s):  
Production Process ◽  
Raw Materials ◽  
Cost Savings ◽  
Optimal Level ◽  
Raw Material ◽  
Economic Order Quantity ◽  
Economic Order ◽  
Order Quantity ◽  
Total Cost ◽  
The Cost

A company should maintain an adequate or optimal level of inventory so that production operations can run smoothly and efficiently. What needs to be considered in this case is that the required raw materials are always available, so as to guarantee the smooth production process. However, the amount of inventory should not be too much because this will harm the company. Too much inventory will increase maintenance costs and storage costs in the warehouse. In addition, the amount of inventory that is too much can also increase the likelihood of losses due to damage and loss of quality that can reduce company profits. And vice versa, the amount of inventory that is too small will hamper the production process so that the company will suffer a lot of losses including: the machine does not work as it should, many workers are unemployed, and can even result in the cessation of the production process. This study aims to determine how the calculation of raw materials, what is the total cost of raw material inventory if the company establishes an EOQ (Economic Order Quantity) policy, what is the limit or point of ordering raw materials needed by the company during the grace period at PT.Bentoel International Investama in Malang.The population used is the supply of tobacco raw materials at PT. Bentoel International Investama, where this research was conducted by interview and documentation. The variable in this study is the supply of raw materials. The analysis used is the EOQ (Economic Order Quantity) method.The results of the study, if using the EOQ method in 2017 the cost savings of Rp 40,290,256,931, while in 2018 the cost savings of Rp. 44,388,428,549. Thus there is a difference between inventory policies carried out according to the company with EOQ calculations. It can be concluded that the supply of raw materials every year has increased raw materials, the frequency of purchasing raw materials when using raw materials when using the EOQ method is 2 times in one period, the limit for ordering raw materials needed by companies when using the 2017 EOQ method is 218,176.7 kg, while in 2018 it will be 210,853 kg. The total cost of raw material inventory calculated according to EOQ is less than that spent by the company, so there is a cost savings of raw material inventory

scholarly journals Comparative Inventory Control Analysis With Economic Order Quantity (Eoq) And Just In Time Method To Minimize Inventory Costs At UD.Melati Jaya

2021 ◽  
Vol 5 (1) ◽  
pp. 1-7
Author(s):  
KHAIRUNNISA ALMADANY
Keyword(s):  
Inventory Control ◽  
Control Method ◽  
Economic Order Quantity ◽  
Economic Order ◽  
Just In Time ◽  
Control Analysis ◽  
Order Quantity ◽  
Total Cost ◽  
Inventory Costs ◽  
The Cost

The research discusses how To Compare Inventory Control Analysis With Economic Order Quantity (EOQ) Method and Just In Time (JIT) Method To Minimize Inventory Costs At UD. Melati Jaya. This study discusses a comparative analysis of the Economic Order Quantity method and the Just In Time method to minimize inventory costs at UD. Jasmine jaya. The data analysis method used is descriptive qualitative method with comparative research that compares the Econimic Order Quantity (EOQ) method with the Just In Time (JIT) method to the cost efficiency at UD. Melati Jaya. The analysis results from the comparative calculation of inventory control show that the Just In Time Inventory Control method is more appropriate to be applied to Ud. Melati Jaya because the total cost of the inventory is smaller than the total cost of the inventory when using the Economic Order Quantity (EOQ) method.

scholarly journals ANALISIS METODE ECONOMIC ORDER QUANTITY (EOQ) SEBAGAI DASAR PENGENDALIAN PERSEDIAAN BAHAN BAKU (STUDI PADA YANKEES BAKERY, KECAMATAN KERTOSONO)

2019 ◽  
Vol 1 (1) ◽  
Author(s):  
Selvi Santosa ◽  
Gandung Satriyono ◽  
Rinto Nur Bambang
Keyword(s):  
Data Analysis ◽  
Wheat Flour ◽  
Raw Materials ◽  
Raw Material ◽  
Economic Order Quantity ◽  
Economic Order ◽  
Order Quantity ◽  
Total Cost ◽  
The Third ◽  
The Cost

            The current study aims to analyze the supply of raw materials for yankees bakery bread specifically for wheat flour, granulated sugar. This research is done for 2 months, from January to February 2018. Data analysis is used by researchers using the EOQ (Economic Order Quantity) to carry out orders to determine how many orders. From the results of this study the amount of inventory is optimal, EOQ of wheat flour in the third quarter of 2017 is 4,807.29 kg, dosage is 137.28 kg, done (ROP), the remaining stock is 265.68 kg, the total cost is Rp. 971,420. The fourth quarter of 2017 is 5,217.66 kg frequency 2 times, safety supplies 69 kg, reorder (ROP) stocks in warehouses remaining 198.11 kg, the total cost of inventory is Rp. 1,054,346. Based on the results of the study concluded that EOQ is more efficient. Then the cost of the raw material for Yankees Bakery is used EOQ in the supply of raw materials. Penelitian saat ini bertujuan menganalisis sediaan bahan baku roti yankees bakery khusus bahan tepung terigu, gula pasir. Penelitian yang ini dikerjakan lamanya 2 bulan, dari bulan Januari hingga bulan Februari 2018. Analisis data dipergunakan peneliti menggunakan EOQ (Economic Order Quantity) melaksanakan pesanan menentukan seberapa banyak pesanan. Dari hasil penelitian ini jumlah persediaan menjadi optimal, EOQ tepung terigu triwulan tiga tahun 2017 banyaknya 4.807,29 kg, sediaan 137,28 kg, dilakukan (ROP) sediaan sisa 265,68 kg, total biaya Rp. 971.420. Triwulan keempat tahun 2017 sebanyak 5.217,66 kg frekuensi 2 kali, persediaan pengaman 69 kg, melakukan pemesanan ulang (ROP) sediaan di gudang tersisa 198,11 kg, total biaya persediaan sebesar Rp. 1.054.346. Berdasarkan hasil penelitian disimpulkan EOQ lebih efisien. Maka hematan biaya sedia bahan baku Yankees Bakery gunakan EOQ di sediaan bahan baku.

scholarly journals Application of Economic Order Quantity Method in Controlling Raw Material Inventory

2021 ◽  
Vol 04 (08) ◽  
Author(s):  
John EHJ. FoEh ◽  
Keyword(s):  
Secondary Data ◽  
Raw Material ◽  
Economic Order Quantity ◽  
Economic Order ◽  
Primary Data ◽  
Optimal Order ◽  
Order Quantity ◽  
Total Cost ◽  
Material Supply ◽  
The Cost

The research aims to determine the optimal order quantities of raw materials using Economic Order Quantity (EOQ), the total cost of raw material inventory, reorder point, order frequency, and application of the EOQ method on the CV. XYZ Kupang in an effort to optimize inventory costs. The data used in this study consisted of primary data and secondary data both qualitatively and quantitatively related to raw material supply. Primary data were obtained through direct observation and interviews with various key respondents at CV. XYZ Kupang. Secondary data were obtained from the documents and reports from Management Company. The results of this study indicate that the optimal quantity of raw material orders at CV. XYZKupang is 63.80 m3 in 2017, 63.04 m3 in 2018, and 72.80 m3 in 2019. The total cost of the company’s raw material supply that issued if EOQ policy appliedRp. 32.267.554 in the year 2017, Rp. 24.507.185 in the year 2018, and Rp. 28.020.251 in the year 2019.CV. XYZ Kupang must perform an order back in the level of inventories of 16.74 m3 in 2017, at 10.08 m3 in 2018, and 9.82 m3 in 2019.6.90 m3 in 2017, 6.20 m3 in 2017, and 5.75 m3 in 2019. CV. XYZ Kupang had to order as many as 9 times in the year 2017, 8 times in the year 2017, and 8 times in the year 2019. Thus the number of all bookings in the year 2017 of 7.09 m3, by the year 2018 of 7.88 m3 and in the year 2019 of 9.1 m3.CV. XYZ Kupang can optimize the cost of supplies, neither order of the cost of storage. If EOQ method applied, there is a saving from the total cost of the inventory in the year 2017 is Rp. 72.523.229, by the year 2018 is Rp. 68.476.912, and in 2019 is Rp. 76.468.558.

Sistem Informasi Pengendalian Persediaan Barang Menggunakan Metode Economic Order Quantity (EOQ)

IJAcc ◽  
2020 ◽  
Vol 1 (2) ◽  
pp. 132-139
Author(s):  
Erna Astriyani ◽  
Desy Apriani ◽  
Meri Mayang Sari
Keyword(s):  
Control System ◽  
System Design ◽  
Inventory Control ◽  
Economic Order Quantity ◽  
Economic Order ◽  
Control System Design ◽  
Order Quantity ◽  
Microsoft Excel ◽  
Total Cost ◽  
Control Information

The system that is currently running in recording inventory at PT Berlina Tbk Tangerang is considered ineffective and efficient because it still uses paper and the process of inputting and recapping goods data is semi-computerized in Microsoft Excel. which causes problems, namely too much stock of goods so that it increases the load in the warehouse and too little stock of goods which results in an exhaustion of stock in the warehouse. To solve this problem, we need an inventory control information system. The method of analysis uses the EOQ (Economic Order Quantity) method. For the system design process using sublime as the writing language and programming PHP, and XAMPP as localhost, the database uses MySQL. This study aims to design an inventory control system in the HRD department at PT Berlina Tbk Tangerang, and to make it easier for the HRD Department to input and create inventory reports. With this research, it can produce an inventory control system design that is more effective and efficient and can find out the storage costs in the warehouse. From the calculation of the EOQ method, it is found that it is 20% smaller than the previous storage and the total cost of ordering in a year is 2x orders. Thus, it means that there is a very real difference between the inventory policies implemented by the company and the EOQ method.

scholarly journals ANALISIS PENGENDALIAN PERSEDIAAN BAHAN BAKU PADA UD. MIE STEVEN KAROMBASAN KOTA MANADO

2017 ◽  
Vol 13 (3A) ◽  
pp. 251
Author(s):  
Megawati ., Sengkeunaung ◽  
Tommy F. Lolowang ◽  
Nordy F.L. Waney
Keyword(s):  
Inventory Control ◽  
Secondary Data ◽  
Raw Material ◽  
Economic Order Quantity ◽  
Economic Order ◽  
Primary Data ◽  
The Internet ◽  
Order Quantity ◽  
Inventory Cost ◽  
Total Cost

This research aims to analyze raw material inventory at UD. Mie Steven. This research was conducted for four months from January to April 2017. The data used in this research are primary and secondary data. Primary data obtained through interviews with the company, while secondary data obtained from data that has been compiled in the form of documents from the company, data from BPS, previous research or from the internet. The data is processed using EOQ (Economic Order Quantity) method. The result of the research is known that the policy of raw material inventory control is done by UD. Mie Steven is not efficient yet. This is shown by the company's inventory cost is bigger than the result of analysis using EOQ method is 6,693 Kg with total cost of economical inventory Rp.11.325.500.

scholarly journals PERENCANAAN DAN PENGENDALIAN PERSEDIAAN BAHAN BAKU PAIL CAT MENGGUNAKAN METODE MATERIAL REQUIRMENT PLANNING (MRP) PADA PT. XYZ

JUMINTEN ◽  
2020 ◽  
Vol 1 (4) ◽  
pp. 163-172
Author(s):  
Vify Elviana ◽  
Akmal Suryadi
Keyword(s):  
Inventory Management ◽  
Consumer Demand ◽  
Raw Materials ◽  
Raw Material ◽  
Economic Order Quantity ◽  
Economic Order ◽  
Order Quantity ◽  
Material Requirements Planning ◽  
Total Cost ◽  
Material Requirements

Persediaan merupakan aset perusahaan yang memiliki peran penting dalam operasi bisnis, sehingga perusahaan penting untuk melakukan manajemen persediaan yang baik, artinya perusahaan harus mampu mengantisipasi kendala maupun tantangan yang ada dalam pengelolahan persediaan untuk meminimalisasi total biaya yang harus dikeluarkan oleh perusahaan. Permasalahan yang timbul pada persediaan bahan baku di PT XYZ adalah perusahaan melakukan perencanaan dan pengendalian bahan baku hanya berdasarkan pada pengalaman-pengalaman sebelumnya dan tidak berdasarkan pada metode yang sudah baku. Oleh karena itu pembelian bahan baku tidak sesuai dengan permintaan konsumen. Hal tersebut sering menyebabkan terjadinya kelebihan maupun kekurangan stok bahan baku. Kesalahan dalam penentuan besarnya investasi dalam persediaan akan mengurangi keuntungan perusahaan. Adanya persediaan bahan baku yang terlalu besar, akan menambah beban biaya pemeliharaan dan penyimpanan dalam gudang, serta kemungkinan terjadinya penurunan kualitas bahan baku yang dapat menyebabkan berkurangnya keuntungan perusahaan. Namun jika persediaan bahan baku terlalu sedikit maka akan berakibat pada terhambatnya proses produksi, sehingga tidak terpenuhinya permintaan konsumen. Hasil penelitian ini dapat menyimpulkan bahwa perencanaan kebutuhan bahan baku dengan metode perusahaan didapatkan total cost sebesar Rp 1.796.762.429,-, sedangkan metode Material Requirements Planning (MRP) didapatkan total cost sebesar Rp 1.576.011.801,-. Maka dapat disimpulkan telah terjadi penurunan total cost seluruh bahan baku sebesar 12,28%. Hal ini membuktikan bahwa metode Material Requirements Planning (MRP) lebih efisien daripada metode PT. XYZ. Oleh karena itu untuk mendapatkan total cost yang minimum, metode Material Requirements Planning (MRP) diterapkan pada periode Februari-Juni 2020 sehingga didapatkan total cost sebesar Rp 1.576.011.801,-. Kata Kunci:         Material Requirements Planning (MRP), PT XYZ, Pail Cat, Economic Order Quantity (EOQ), Period Order Quantity (POQ), Lot For Lot (LFL). ABSTRACT                     Inventory is a company asset that has an important role in business operations, so the company is important to conduct good inventory management, meaning that the company must be able to anticipate obstacles and challenges that exist in managing inventory to minimize the total cost to be incurred by the company.The problem that arises in the supply of raw materials in PT XYZ is that the company plans and controls raw materials based only on previous experiences and not based on established methods. Therefore, the purchase of raw materials is not in accordance with consumer demand. This often leads to excess or shortage of raw material stock. Mistakes in determining the amount of investment in inventories will reduce company profits. The availability of raw materials that are too large, will add to the burden of maintenance and storage costs in the warehouse, as well as the possibility of a decline in the quality of raw materials that can lead to reduced company profits. However, if the supply of raw materials is too little, it will result in obstruction of the production process, so that consumer demand is not fulfilled. The results of this study can conclude that the planning of raw material needs by the company method obtained a total cost of Rp 1,796,762,429, - while the Material Requirements Planning (MRP) method obtained a total cost of Rp 1,576,011,801, -. Then it can be concluded that there has been a decrease in the total cost of all raw materials by 12.28%. This proves that the Material Requirements Planning (MRP) method is more efficient than the PT. XYZ. Therefore, to get the minimum total cost, the Material Requirements Planning (MRP) method was applied in the February-June 2020 period so that a total cost of Rp 1,576,011,801 was obtained.   KeyWords: Material Requirements Planning (MRP), PT XYZ, Pail Cat, Economic Order Quantity (EOQ), Period Order Quantity (POQ), Lot for Lot (LFL).

scholarly journals Analisis Pengendalian Persediaan Bahan Baku dengan Menerapkan Metode EOQ (Economic Order Quantity) pada PT. Jatisari Furniture Work

2021 ◽  
Vol 5 (1) ◽  
pp. 215
Author(s):  
Arga Sutrisna ◽  
Rizki Ginanjar ◽  
Suci Putri Lestari
Keyword(s):  
Production Costs ◽  
Raw Material ◽  
Economic Order Quantity ◽  
Economic Order ◽  
Analysis Tool ◽  
Order Quantity ◽  
Inventory Cost ◽  
Total Cost ◽  
Inventory Costs ◽  
Total Inventory

This research objectives aims to determine and analyze raw material inventory control, the ideal raw material inventory that the company must provide and the efficiency of production costs carried out by Jatisri Furniture Work in Tasikmalaya for the period 2018.11 – 2020.02. The data collection method in this study is by direct observation at Jatisari Furniture Work in Tasikmalaya. Using techniques such us interviews, observation, and documentation. These observations were made in production reports for the years 2018 – 2020. The analysis tool was carried out using the Economic Order Quantity (EOQ) method such us safety stock, reorder point, and total inventory cost. The result of the Economic Order Quantity (EOQ) analysis show that the total cost of raw the material inventory that must be incurred by the company is greater than the total cost of inventories calculated according to the EOQ method. Companies should follow the calculations from the EOQ method so that they can save on raw material inventory costs, so that production costs are more efficient.

scholarly journals Penerapan Metode Economic Order Quantity Dalam Mewujudkan Efisiensi Biaya Persediaan STUDI KASUS PADA PT. SETIAJAYA MOBILINDO BOGOR

2013 ◽  
Vol 1 (3) ◽  
pp. 203-214
Author(s):  
Chandra Herawan ◽  
Udi Pramiudi ◽  
Edison Edison
Keyword(s):  
Consumer Demand ◽  
Economic Order Quantity ◽  
Economic Order ◽  
Order Quantity ◽  
Inventory Costs ◽  
Company Stock ◽  
Market Needs ◽  
The Cost

Inventories are important in making sales for the company to meet consumer demand, so asexpected to be able fill up market needs and utilize existing opportunities to earn income. Ownedstock company must supply the optimum value, so as to meet every demand with minimum cost.then the company can use the method of economic order quantity (EOQ) calculation of theoptimum amount of inventory. By using the EOQ method is the cost incurred for the procurementof supplies to be more minimal. The purpose of this study was to determine how theimplementation of the EOQ method and inventory costs that occurred in the company, as well as tofind out how the role of the EOQ method in the company stock cost efficiently. Research on theauthor is in the PT. Setiajaya Mobilindo Bogor. PT. Setiajaya Mobilindo Bogor is a companywhich engaged in sales, service and spareparts. The results obtained by the method of economicorder quantity (EOQ) ordering the company to find out how economical for each inventory itemand find out the frequency of bookings for a period and when ordering goods to be redone, so thedemand for goods can be satisfied in the maximum. Thus the economic order quantity (EOQ)method important to act in efficient of suppy cost in that company.

scholarly journals KUANTITAS PEMESANAN EKONOMIS BAHAN BAKU TEPUNG PADA USAHA ROTI SURYA BAKERY KOTA BANGKULU

2019 ◽  
Vol 12 (1) ◽  
pp. 124-140
Author(s):  
Virda Palupi ◽  
Trisna Murni ◽  
Syamsul Bachri ◽  
Sri Warsono
Keyword(s):  
Wheat Flour ◽  
Lead Time ◽  
Quantitative Method ◽  
Secondary Data ◽  
Raw Material ◽  
Economic Order Quantity ◽  
Economic Order ◽  
Order Quantity ◽  
Total Cost ◽  
Descriptive Qualitative

This study aimed to analyze the Economic order quantity level of raw material wheat flour for Surya Bakery and the quantity level of Re-order Point. The design of study was descriptive qualitative. The study used secondary data in order to gain the information about purchasing of raw material of flour. The data analyzed by quantitative method which used Economic Order Quantity (EOQ) method and Re-order Point. The result shows that EOQ in Usaha Roti Surya Bakery is 4.266 kg with frequency of ordering raw material is 22 times. Wher eas re-order point of the raw material when inventory reach 1.068 kg with lead time are 4 days. Before using EOQ method, the frequency of ordering raw material of flour is 36 times per year. After using EOQ method, it is found the frequency of ordering raw material of flour is 22 times per year. So that, after using EOQ method, the result of ordering cost was Rp. 2.668.00,- carrying cost was Rp. 2.615.000,-, and total cost of raw material was Rp. 5.283.000,-. Therefore, the Surya-Bakery could save money for Rp 533.000 per year.

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