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Yurida Ekawati
Department of Industrial Engineering, Universitas Ma Chung, Malang
Control & Systems Engineering Decision Sciences, Operations Research & Management Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Penerapan Metode Taguchi untuk Meningkatkan Kualitas Bata Ringan pada UD. XY Malang Putri Halimah; Yurida Ekawati
JIEMS (Journal of Industrial Engineering and Management Systems) Vol 13, No 1 (2020): Journal of Industrial Engineering and Management Systems
Publisher : Universitas Bunda Mulia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30813/jiems.v13i1.1694

Abstract

Light brick compressive strength produced by UD. XY has a very high variation because there is no standard composition of raw materials. This research is carried out to design an improvement or quality improvement for light brick products at UD. XY. Quality improvement is on increasing the compressive strength of light brick with optimal composition. Quality improvement is conducted using the experimental design of the Taguchi method to obtain an optimal composition combination. The orthogonal array notation used is L9(34) with material control factors in the form of water (A), cement (B), and sand (C). Data processing is done by calculating ANOVA on average values and SNR with larger better classification. The classification is chosen because of the greater the compressive strength of the light brick the higher the quality of the light brick. This ANOVA calculation is carried out to find out which factors significantly influence the light brick compressive strength. The test conducted to determine the quality of light brick is a concrete compressive strength test carried out using the Compression Machine. Based on the results of data processing, a comparison of the optimal composition of water: cement: sand is 1: 2.5: 4. The confirmation experiment proves that the compressive strength of the composition is robust.
Analisis Kelayakan Rencana Investasi Travel Baru Menggunakan Metode Hesitant Fuzzy Sets Andreas Setijono; Yurida Ekawati
JIEMS (Journal of Industrial Engineering and Management Systems) Vol 12, No 2 (2019): Journal of Industrial Engineering and Management Systems
Publisher : Universitas Bunda Mulia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30813/jiems.v12i2.1455

Abstract

Transportation is a tool that supports the construction and economic development of a country. Because in this modern era, transportation provides easy access to the movement of goods and people from one place to another. This research was conducted at a company engaged in public transportation services. The main services provided are inter-city buses in the province, inter-city inter-provincial buses, tour buses and travel transportation. In 2018, the company has plans to add six travel vehicles and the capital owned is 500.000.000 Rupiah. While the remaining capital needed will be borrowed from Bank Antardaerah, so a business feasibility study is needed that can determine whether or not the investment plan is feasible. In addition, the Hesitant Fuzzy Sets method is used to model all forms of uncertainty that can cause losses. Hesitant Fuzzy Sets are an extension of the fuzzy set to handle inaccuracies where there are two or more sources of obscurity that appear simultaneously. Some basic methods used to determine the feasibility of investment plans are Payback Period (PP), Minimum Acceptable Rate of Return (MARR) and Internal Rate of Return (IRR). In addition, the Hesitant Fuzzy Sets method is used to model all forms of uncertainty that can cause losses. One example of such uncertainty is income uncertainty and expenditure uncertainty which are received by the company every year. The reason for using Hesitant Fuzzy Sets, because the method is an extension of the fuzzy set that can handle inaccuracies where there are two or more sources of obscurity that appear simultaneously.
Co-Authors Andreas Setijono Putri Halimah