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Fitriani, Risma
Universitas Singaperbangsa Karawang
Computer Science & IT Mathematics

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Analisis Pengendalian Kualitas Produk Cacat Part X Menggunakan Lean Six Sigma di PT XYZ Rahmadhani, Novia; Fitriani, Risma
STRING (Satuan Tulisan Riset dan Inovasi Teknologi) Vol 8, No 3 (2024)
Publisher : Universitas Indraprasta PGRI Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30998/string.v8i3.19320

Abstract

In the manufacturing industry, industrial competition is increasingly competitive, to produce a product that has high quality to be an added value in XYZ company's competitive advantage, so that companies produce good quality products by meeting consumer standards and tastes for the products they produce and reduce the level of product defects by the company. This study aims to analyze defective products on Part lockwasher at PT XYZ. The research used the Six Sigma method to control product quality through 5 stages, namely define, measure, analyze, improve and control. From the results of this analysis, it was found that there were 3 types of product defects that caused the resulting defects, namely high torque values, rotating bolts, and easily detached stoppers caused by machine, human, and method factors. the results of the six sigma calculation of defective products Part lockwasher during April-December there is a six sigma level of 3.463 with an average DPMO of 24803.43, and knowing the highest level of defects is caused by high torque values. These results indicate that product defects in Part lockwasher are on average for the Indonesian industry. The proposal given in this study uses 5W + 1H as an improvement to improve product quality.
Strategi Peningkatan Kinerja Karyawan PT. Ciptaunggul Karya Abadi dengan Metode Analytical Hierarchy Process Waliyyu, Rafi Umar; Fitriani, Risma
STRING (Satuan Tulisan Riset dan Inovasi Teknologi) Vol 8, No 2 (2023)
Publisher : Universitas Indraprasta PGRI Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30998/string.v8i2.17135

Abstract

In determining alternative decisions for improving its employee performance, PT. Cipta Karya Abadi appraises its employee performance with the help of predetermined criteria limits. To find out the level of quality of employees, work facilities, employee welfare which is a priority in performance improvement strategies so that employees get comfortable and motivated and can reduce feelings of boredom when carrying out work, can be conducted by looking at some of the problems that occur in the company. This research was conducted to find out strategies that can be used to increase employee performance in making a company organization more efficient. Based on the results described in the results and discussion, it can be concluded that the criteria used as a reference in employee performance improvement strategies are additional tasks, management skills, work skills, and communication skills. From the above criteria, several alternatives proposed by the company to improve employee performance. They are HR Quality Improvement, Work Facilities Improvement and Welfare Improvement. The three calculations that have been carried out using the Analytical Hierarchy Process (AHP) method to determine employee performance improvement strategies show that the first alternative priority is to increase work facilities with a priority value of 0.3448, then the second and third alternatives are to improve the quality of human resources and increase welfare by the same priority value of 0.3276.
Analisis Kualitas Produk Imprabox Menggunakan Metode Seven Tools Faurika, Rahmah; Fitriani, Risma; Rinaldi, Dimas Nurwinata
STRING (Satuan Tulisan Riset dan Inovasi Teknologi) Vol 8, No 2 (2023)
Publisher : Universitas Indraprasta PGRI Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30998/string.v8i2.16999

Abstract

Product quality control is very important to pay attention to so that a company can continuously compete with other companies, increase its sales value, and get the trust of customers as its most important target. PT JP is an industrial company engaged in manufacturing with packaging products made from polypropylene/Impraboard, Cardboard Box, Polyethylene Foam, Spon Eva, and other packaging need materials. One of the products with a high sales rate is imprabox products. But, during the inspection process, there is a fairly high and diverse defect rate. Therefore, efforts are needed to minimize product defects using the basic seven tool method. This research begins with product inspection using a cheksheet in the QC (Quality Control) department. The inspection is carried out 23 times with a total of 3,256 items and 941 NG products. Furthermore, a flowchart is made to display the manufacturing process starting from marking, cutting, bending or fit up, welding, to finishing. Histogram is used to determine the variation of defects, in this case there are 12 types of defects including printing, EVA coating and NG cover. Pareto diagram is used to determine the dominant defects including in printing at 41.34%, Eva coating at 22.85% and NG cover at 11.265. Ishikawa/fishbone diagram is used to determine the causes of defects including human factors, machine factors, method factors and environmental factors. Scatter diagram is used to express the 77% relationship (correlation) between the variation in the number of defective products and the amount of production. The control diagram is used to analyze the control limits with UCL 40.9 and LCL 0.403.
Perbandingan Metode Single Exponential Smoothing dan Regresi Linear dalam Menentukan Forecasting Permintaan Produk Suranto, Peny Septiana; Fitriani, Risma
STRING (Satuan Tulisan Riset dan Inovasi Teknologi) Vol 8, No 3 (2024)
Publisher : Universitas Indraprasta PGRI Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30998/string.v8i3.19319

Abstract

PT. XYZ is one of the manufacturing companies engaged in the transportation of trucks and buses. The company has a production system make to order with the principle of just in time and has a lead time of two months both when the order is little or much. That way, sales demand forecasting is needed to assist companies in planning the production process in the coming period. The purpose of this study is to forecast the demand for sales of Medium Duty trucks at PT. XYZ. The method used is Single Exponential Smoothing and Linear regression which later the two methods will be compared. The constants used are 0.1 to 0.9 and the accuracy measures used are MAD and MAPE. The results obtained are that the Single Exponential Smoothing method with a constant of 0.9 has the smallest accuracy size compared to others. So that the forecasting data to be used is forecasting at SES constant 0.9. 
Co-Authors Faurika, Rahmah Rahmadhani, Novia Rinaldi, Dimas Nurwinata Suranto, Peny Septiana Waliyyu, Rafi Umar