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All Journal Jurnal Rekayasa Sistem Industri Jurnal Terapan Abdimas Tibuana : Journal of Applied Industrial Engineering Jurnal Optimalisasi JITU (Jurnal Ilmiah Teknik Unida)
Suparno Suparno
Program Studi Teknik Industri Universitas Qomaruddin Jalan Raya No.01 Bungah Gresik
Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering Transportation Other

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Journal : Jurnal Optimalisasi

 1 
Analisis Perbandingan Metode Moving Average dan Exponential Smoothing untuk Meramalkan Permintaan Produk Turning Pada CV. Gavra Perkasa Suparno Suparno; Anik Rufaidah
Jurnal Optimalisasi Vol 7, No 2 (2021): Oktober
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v7i2.4311

Abstract

CV. Gavra Perkasa is a manufacturing industry with the finished product in the form of turning. The number of sales transactions will affect the inventory of raw materials. The problem with the company is that the company's ability to predict the amount of raw materials that must be available in the following month is not optimal due to fluctuating demand. This problem will have an impact on planning inventory inventory during the production process and recording inventory usage to optimize storage costs. This study aims to plan inventory demand in the future and to plan inventory use using the Moving average  and Exponential smoothing methods. These two methods are used because the results of the demand data plot show a stationary data pattern. The accuracy of the forecasting results was analyzed with the smallest MSE, MAD, and MAPE results. Based on the analysis results, the 5-month MA method is the most accurate with prediction results in 2017 of 57000 units with MAD, MSE, and MAPE values of 3684.21, 24345260, and 0.07.
Analisis Kualitas pada Produksi Tahu menggunakan Metode Statistical Quality Control (SQC) Suparno Suparno; Narto Narto
Jurnal Optimalisasi Vol 8, No 2 (2022): Oktober
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v8i2.5912

Abstract

CV. Sumber Rejeki is a home industry that makes tofu, where in its production the company has not conducted a quality analysis. Because quality analysis has not been carried out properly, resulting in very high product defects that occur during production. In this study, the analysis carried out aims to identify what types of damage occur, and provide suggestions for improvements using the Statistical Quality Control (SQC) method. The research data were processed using the Statistical Quality Control (SQC) method with several stages of activity, namely making examination sheets, histograms, making Pareto diagrams, making control charts, and making cause-and-effect diagrams. The results showed that there were three types of defects, namely soft texture, wrong cut, and dirt. Through the Pareto diagram, it is clear that the percentage of damage to the soft texture is 5,116 bj or 38.8%, the second defect is 4.262 bj or 32.3%, and the last or lowest defect is 3,810 bj or 28.9 cut errors. %. Based on the analysis of the cause-and-effect diagram to find the root cause of the problem, it was found that there were four factors that needed to be improved, these factors were workers, machines, raw materials, and methods. Actions that can be taken to reduce product defects are to carry out regular machine maintenance, provide adequate training to workers, improve discipline, carry out good control of soybean raw materials.
Analisis Kualitas Produk Songkok Menggunakan Pendekatan Ishikawa Diagram dan Failure Mode and Effect Analysis Suparno Suparno; Faziyatun Ni'mah
Jurnal Optimalisasi Vol 9, No 2 (2023): Oktober
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v9i2.8177

Abstract

UD. Arief Bersaudara merupakan home industry yang memproduksi berbagai jenis songkok di Kota Gresik. Agar dapat bersaing dengan usaha sejenis, Perusahaan perlu menjaga dan meningkatkan kualitas produknya. Dalam menjalankan aktivitas produksi, Perusahaan menemukan bahwa produk yang dibuat selama produksi mengalami cacat. Cacat tersebut disebabkan oleh beberapa faktor, baik dari faktor manusia, faktor mesin yang digunakan, faktor bahan baku yang digunakan berkualitas kurang baik, faktor lingkungan yang berpengaruh terhadap pencahayaan, dan juga karena faktor metode yang digunakan. Cacat produk yang terjadi berupa pengesuman kurang bagus, penjahitan kurang rapi, dan pemotongan kurang presisi. Tujuan dari penelitian ini adalah mengidentifikasi penyebab cacat defect serta dengan menghitung nomor prioritas risiko. Metode yang digunakan untuk menemukan dan melakukan identifikasi faktor penyebab cacat pada produksi songkok adalah mengguankan metode Ishikawa Diagram. Sedangkan usulan perbaikan yang menjadi acuan dalam penelitian ini dilakukan dengan cara melakukan perhitungan Risk Priority Number (RPN) dengan menghitung setiap nilai yang ada pada indicator yang diukur untuk mendapatkan nilai RPN tertinggi yang berarti memberikan dampak risiko paling besar. Metode yang digunakan adalah Failure Mode Effect Analysis (FMEA).  Berdasarkan hasil penelitian menunjukkan tiga defect yang teridentifikasi dengan nilai Risk Priority Number tertinggi 245 pada pemotongan kurang presisi, dengan nilai RPN 175 pada Penjahitan tidak rapi, dan nilai RPN 150 Pengesuman Kurang Bagus. Rekomendasi perbaikan berdasarkan hasil analisis adalah owner harus melakukan pengawasan yang baik kepada pekerja bagian, selain itu peningkatan keahlian pekerja mutlak dilakukan untuk menjamin kualitas yang baik.
Co-Authors Agus Selamet Susanto Anik Rufaidah Dwi Mei Riya Ristanti Faziyatun Ni'mah Hafidz Yusuf Hafidz Imam Bahroni Moh. Ririn Rosyidi Nailul Izzah Narto Narto Nur Hamidah Sofiyanurriyanti