Jurnal VORTEKS

Analisis perencanaan dan pengendalian persediaan bahan baku menggunakan klasifikasi ABC dan Metode Min-Max Stock

Fauzan Azhima — 2023-10-31

Inventory is one of the assets contained in the company. Stock plays an essential role for companies because Inventory must be planned and controlled properly. Inventory control is seeking the availability of raw materials so that there are no shortages and excesses. ABC classification is a method used to classify goods based on the ranking or order of the cumulative percentage value of absorption of funds and the cumulative percentage of raw material use, which are then sorted from the highest importance to the lowest value and are divided into groups A, B and C. Inventory is carried out to exercise control using Min-Max Stock; if the stock has exceeded the minimum limit, then a Re-Order must be made, and the maximum limit is the availability limit. The results of the ABC classification with the cumulative percentage of capital absorption and the percentage of use of raw materials show that the factory must focus on paying attention to handling the availability of suitable materials so that no buildup can cause damage and its availability is maintained. Proper handling so that the raw materials are not damaged due to accumulation and to avoid running out of raw materials, the Min-Max Stock method takes into account the amount of Safety Stock that must be in storage so that the production process can run smoothly if there is an additional need for raw materials or occurs late arrival of raw materials. In addition, so that there is no accumulation of raw materials in storage

Analisa beban static pada tabung Apar tepung biji durian menggunakan Metode CAE (Computer Aided Engineering)

Roby Alfiah Harahap — 2023-10-31

With the increasing science of technology, especially in the industrial world, currently experiencing increasingly rapid progress will bring consequences and influences to the continued need for various tools to facilitate and expedite work in various fields both as complements and main products. This is what drives us to design, build and analyze an APAR (Light Fire Extinguisher) using the basic ingredients of durian seed flour and Nitrogen (N). The material used in making this apar is carbon steel with a length of 530 mm, diameter: 150 mm and tube thickness of 6 mm. Because of the static fluid in the apar, the analysis carried out is load static analysis on durian seed flour apar tubes using the CAE (Computer Aided Engineering) method, which includes stress, strain and changes in shape / displacement on each element of the durian seed flour fire extinghuisher tube with normal pressure variables of at least 16 bar and a maximum of 18 bar. The results of this analysis showed a stress of 0.607 N/m and experienced an ESTRN strain of 2.817e – 06 then underwent a change in shape / displacement of 1,000e – 30 mm at a normal pressure variable of at least 16 bar. Then with a normal pressure variable of a maximum of 18 bar get a stress result of 0.545 N/m and experience an ESTRN strain of 2.817e – 06 then experience a change in shape / displacement of 1,000-30 mm.

Analisis pengendalian kualitas refined bleached deodorized palm kernel oil menggunakan metode Quality Loss Function di PT. ABC

Hanna Christine Pasaribu — 2023-10-31

This study uses the Quality Loss Function as a way to see product variations on production costs. Quality Loss Function int is also used to indicate that a product or service is related to quality based on standards. Function of quality loss describes the functional relationship between deviation and loss, and it is usually used to assess the direct relationship between quality loss and damage in a refinery production process. From the results of data analysis and processing of data on the two parameters of color and FFA it is that the biggest cause of product damage is material factors,this is due to the fact that there are still many raw materials that do not comply with the parameters that have been set. From the results of research on RBDPKO products, for the cost of product repairs borne by companies with quality characteristics of smaller the better type is Rp. 743.719.690,62.

Kekuatan impak dan kekerasan komposit dengan partikel penguat dari Jamur Ganoderma Boninense

Muhammad Rafiq Yanhar — 2023-10-31

In this study, the material used was a polyester resin composite reinforced with Ganoderma mushroom powder. This study aimed to determine the impact strength and hardness of polyester resin supported with Ganoderma mushroom powder by treating it with a 5% NaOH solution. Impact and hardness test results (specimen size) will be used to determine their quality. 25% fiber and 75% polyester resin and 40% fiber and 60% polyester resin are used to make composites using various volume fraction compositions of polyester resin and mushroom powder. Meshes of 20 and 50 are used for mushroom powder. This study used ASTM E23 for mechanical testing. The 25% particle has the highest breaking energy of 46.47 kg.m², the highest strength of 48.92 j/cm², and decreases in the mesh of 50. The 40% particle has the highest breaking energy of 43.3 kg.m2, and the highest strength of 48.92 j/cm². In hardness tests, mesh 20 showed the highest hardness at 25% particle volume with 11.3 HV and the highest hardness at 40% particle volume with 11.6 HV. In the test results, mesh 20 always shows the highest hardness for 25% and 40% particle volumes, respectively

Perbaikan metode kerja dengan metode Mynard Operation Sequence Technique (Studi Kasus: CV. Usaha Bersama)

Andi Sudrajat — 2023-10-31

Since activities require movement, such as moving, lifting, and assembling goods, consequently, work movement analysis is essential for businesses, especially for manufacturing companies that perform many movement activities during the manufacturing process. The way to calculate the amount of work is MOST (Maynard Operation Sequence Time), which is based on a sequence of actions or subactivities. Repetitive motion is the basis of this subactivity. The purpose of this study is to improve the working method with the MOST method with qualitative research methods and observations by concluding the standard time obtained is as follows: standard time 6.853 / minute standard output 0.06127 boats / day. While the time needed to complete one boat is 20 days