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Jurnal Optimalisasi
Published by Universitas Teuku Umar
ISSN : 24775479     EISSN : 25020501     DOI : https://doi.org/10.35308/jopt
Core Subject : Engineering,
Control & Systems Engineering Industrial & Manufacturing Engineering
JURNAL OPTIMALISASI (JOPT) merupakan jurnal elektronik online yang diterbitkan oleh Program studi Teknik Industri, Fakultas Teknik, Universitas Teuku Umar. JOPT memuat kajian dibidang Manufaktur, Ergonomi dan Manajemen Rantai Pasok. Tujuan penerbitan jurnal optimalisasi adalah sebagai wadah publikasi yang mewadahi kebutuhan peningkatan kualitas karya ilmiah dalam rangka pengembangan keilmuan dan menyebarluaskan kajian bidang ilmu Teknik Industri, sekaligus sebagai wahana komunikasi diantara cendekiawan, praktisi, mahasiswa dan pemerhati masalah Industri. JOPT terbit dua kali dalam setahun, tepatnya pada bulan April dan Oktober. Bagi pembaca, penulis, dan yang melakukan akses situs jurnal yang ingin submit naskah ke jurnal ini, silakan mendaftar sebagai author kemudian login untuk submit naskah. Informasi penulisan dan submit naskah dapat diakses di author guidelines dengan mengikuti pentunjuk di situs jurnal.
Arjuna Subject : Teknik (semua kategori) - Tenik Industri dan Manufaktur
Articles 9 Documents
 1 
Search results for , issue "Vol 9, No 1 (2023): April" : 9 Documents clear
Analisis Perencanaan Permintaan Customer untuk Produk Rear Fender di PT MI Rifda Ilahy Rosihan; Murwan Widyantoro; Roberta Heni Anggit Tansiri; Fadil Triawan
Jurnal Optimalisasi Vol 9, No 1 (2023): April
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v9i1.7272

Abstract

PT. MI is one of the companies engaged in the manufacturing sector. Rear Fender is a product that produce by PT. MI. The problems for this research is the difference between demand customer and orders which is too far resulting in the remaining stock, with the average of stock is 8,33%. Inventory cost can increase because of excess stock. This aims of the study is to find the best forecasting method for rear fender products. The forecasting method is Moving Average, Weighted Moving Average, and ARIMA. The forecasting method is depend on demand data plots. The result of demand data plots it horizontal plotting so the forecasting method is time series method. The best Forecast for rear fender products is the ARIMA with the ARIMA model (1,1,0). The ARIMA method was chosen because the MAPE values are 13.305, MAD 5435.45 and MSE 41988401 which are the smallest when compared to the 2 other time series forecasting methods.
Strategi Peningkatan Produktivitas dari Penggunaan Listrik dengan Analisis Jejak Karbon pada Produksi Tepung Karagenan Siti Aminatu Zuhria; Silmi Azmi
Jurnal Optimalisasi Vol 9, No 1 (2023): April
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v9i1.5761

Abstract

Produk tepung karagenan merupakan produk yang diperoleh dari hasil ekstraksi rumput laut merah menjadi tepung karagenan. Proses ektrasksi tersebut menghasilkan jejak emisi karbon dari penggunaan listrik pada setiap tahapan proses produksinya. Sistem produksi yang ramah lingkungan menjadi salah satu kunci terwujudnya industri ramah lingkungan dan berkelanjutan. Strategi peningkatan produktivitas harus dilakukan untuk meningkatkan reputasi industri dengan memperbaiki sistem produksi melalui analisis jejak karbon yang terbentuk dalam menghasilkan produk. Penelitian ini bertujuan untuk menghitung besarnya emisi karbon yang terbentuk pada proses produksi tepung karagenan dan memberikan upaya rekomendasi perbaikan yang dapat dilakukan. Metode penelitian ini yaitu kuantitatif dengan menganalisis potensi jejak emisi karbon menggunakan perhitungan emisi Gas Rumah Kaca (GRK). Penelitian ini mengggunakan data primer dan sekunder. Penelitian dilakukan dengan mengidentifikasi proses produksi tepung karagenan, menganalisis jumlah konsumsi listrik dan jumlah karbon pada setiap tahapan proses produksi, dan mengkaji strastegi upaya perbaikan untuk meminimasi terbentuknya emisi karbon di industri karagenan. Hasil analisis menunjukkan  bahwa proses produksi karagenan menghasilkan jejak karbon (Carbon Footprint) sebesar 3,75 KgCO2/Kg tepung karagenan. Jejak karbon tertinggi dari penggunaan listrik yaitu pada tahapan proses dewatering sebesar 67,66 kgCO2eq. Strategi rekomendasi perbaikan yang dapat dilakukan untuk mengurangi emisi karbon yang dihasilkan yaitu menggunakan listrik secara bijak, mengganti sumber energi pembangkit listrik dan merekayasa proses produksi.
Identifikasi Penyebab Kehilangan Crude Palm Oil (CPO) di Pabrik Kelapa Sawit Mahmud Basuki; Iing Pamungkas; Tolu Tamalika
Jurnal Optimalisasi Vol 9, No 1 (2023): April
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v9i1.7384

Abstract

PT. Y is a company engaged in the processing of fresh palm fruit bunches into Crude Palm Oil (CPO), and has a production capacity of 30 tonnes/hour. The CPO production system generally goes through a long process and there are several processes that are not optimal. One of the processes is pressing, where this process experiences a lot of oil loss. Oil loss experienced at PT. Y of 6.28 to 6.32 percent of total production. Therefore, it is important to identify the causes of oil loss in the pressing process so that it becomes a preventive measure and can reduce the percentage of oil loss during the production process. The purpose of this research is to identify the factors that cause CPO oil loss and to recommend solutions to minimize CPO oil loss in screw press machines using fishbone diagrams. A fishbone diagram is used to identify the root causes of problems in a process. The cause of the problem is often caused by five elements, namely Man, Method, Machine, Material, and Environment. Fishbone diagram is useful for finding the factors that cause a problem. The results obtained from the fishbone diagram are several factors that cause oil loss in the pressing process or in the screw press machine including machine factors, raw materials, humans, and method factors. Recommendations that can be implemented by companies include routine maintenance of screw press machines, both corrective maintenance and preventive maintenance, it is necessary to control the quality of fresh fruit bunches from the beginning of harvest until the fruit reaches the loading ramp station, and this requires training so that operators can better understand how to machine operation.
Peningkatan Kinerja Jasa Ekspedisi dengan Meninjau Faktor Performansi Heribertus Budi Santoso; Lolyka Dewi Indrasari; Ana Komari; Afiff Yudha Tripariyanto
Jurnal Optimalisasi Vol 9, No 1 (2023): April
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v9i1.4603

Abstract

Tingkat kepentingan kinerja bagi jasa ekspedisi sangat penting. Oleh sebab itu, kinerja yang sudah dilakukan memerlukan pengukuran lebih lanjut. Penelitian bertujuan untuk menilai model kinerja jasa ekspedisi mengguankan perspektif faktor performa. Metode penelitian desain kuantitatif. Indikator yang digunakan sejumlah 12 item. Teknik analisis menggunakan uji regresi logistik biner. Temuan yang dapatkan bahwa performansi dalam meningkatkan kinerja jasa ekspedisi yaitu cukup setuju. Model terpilih (a) < 0,05 adalah . Hasil uji Wald menunjukkan Training (X11) , Informasi Data Penerimaan Barang (X23)  dan Ketepatan Jadwal Pengiriman (X32) . Dinyatakan bahwa indikator yang digunakan dalam penelitian sudah baik dan memerlukan langkah mempertahakan kinerja atau meningkatkan kinerja yang lebih baik lagi.
Pengendalian Kualitas Produk Batu Nisan di Kota Gresik dengan Pendekatan Seven Tools Moh. Ririn Rosyidi; Narto Narto
Jurnal Optimalisasi Vol 9, No 1 (2023): April
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v9i1.6766

Abstract

In the Industrial Age 4.0, when business competition is increasing and growing, business people are also required to be able to maintain and increase their existence in products, This tombstone is one of the product needs when approaching the Idhul Fitri holiday because many people will replace the tombstones that have died or if a relative has passed away. Sadar Gresik UMKM produces tombstones and there is a defect problem that occurs, namely experiencing thin cracks and chipped corners of tombstones in April 2022 Sadar UMKM can produce an average of 41 gravestones in one day and for an average defect in 1 month 11 tombstones. In this study, aims to find out the quality control needed so that the tombstone products can control defects, by using the seven tools to find out the factors that cause defects and can control the defects by knowing the NP line on the control chart. Seven tools can also identify the causes and effects of defects and with the addition of 5W+1H recommendations will be made regarding the problems encountered. factors from the results of fishbone Diagrams that require evaluation which include human factors, materials, methods, environment where these factors cause the number of tombstone defects to be 174 thin cracks and tombstone corners to chip 121. To control defects in tombstone products so that at the midpoint of NP 11.8 is right at the midpoint of the control chart. From several factors that are already known in thin cracked tombstones, namely carrying out quality control of 5W + 1H tombstones, so that they can control these defects in accordance with predetermined product specifications/standards, the process of making tombstone products, employees who work on these have responsibilities, the need for training/skill training for the process of making the tombstones and monitoring the evaluation of the workers, the angle of the tombstones, namely carrying out quality control so as to minimize product defects, so that the quality produced is maintained according to the specified standards, the process of making tombstone products, employees those who do it have the responsibility, make repairs on a regular basis.
Analisis Kelayakan Finansial pada Industri Baglog Jamur untuk Peningkatan Produksi 30.000 Unit per Bulan pada Agroindustri Imam Agus Prabowo; Mathilda Sri Lestari; Rian Prasetyo
Jurnal Optimalisasi Vol 9, No 1 (2023): April
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v9i1.5772

Abstract

The agricultural sector is the main structure of national economic development. One of the sub-sectors in agriculture that has an important role for the welfare of farmers and the regional economy as well as the national economy is the Horticulture sub-sector. This sub-sector has been supported by the agro-industry. One of the products from this agro-industry is baglog of mushrooms. This study aims to analyze the financial feasibility of increasing production capacity from 20,000 to 30,000 baglogs of mushrooms per month. It caused the average demand is 29,070 baglogs of mushrooms per month. The research object is the manufacture of mushroom baglog. Descriptive quantitative with financial feasibility analysis techniques and sensitivity analysis is used as a method in this research. The results found that the investment period of 5 years required an investment cost of IDR 244,342,677. Financial feasibility analysis with a discount rate of 9% produces an NPV value of IDR 257,886,281, an IRR of 44.594%, a Profitability index of 2.06 and a Payback Period of 1.88 years. The results of the sensitivity analysis of an increase in the cost of raw materials by 17% and a decrease in production of 9% obtained the results of NPV > 0, IRR > 9%, Profitability index > 1 and Payback period < business life. Based on these results, the investment is financially feasible because IRR > MARR.
Tinjauan Pustaka Sistematis Penerapan Quality Function Deployment di Industri Manufaktur Ing Brian Rapelo; Krisna Ananda Priyatama; M. Bari Baihaqi; M. Rizki Darmawan; Rohmat Setiawan; Indra Setiawan
Jurnal Optimalisasi Vol 9, No 1 (2023): April
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v9i1.6687

Abstract

Quality Function Deployment (QFD) is a tool or planning instrument that is used to provide an overview of customer desires which are then translated into strategic stages to produce products or services whose characteristics are in accordance with customer wishes. The advantage of this method approach is that the level of customer satisfaction can be explained through data, so that improving the quality of services or products and periodic evaluations to correct deficiencies can be carried out in accordance with the customer's assessment. Many studies using the QFD method are carried out by the industry. This literature review aims to analyze the advantages of the QFD method for increasing customer satisfaction in the manufacturing industry. The method used is the Systematic Literature Review. This article involves a study review of 24 articles related to the application of QFD in the manufacturing industry. The study was conducted using the Google Schoolar database. The articles obtained were then summarized, classified, and comprehensively reviewed. This article expands the knowledge and study of the application of QFD in the manufacturing industry. The development of QFD in future research can be carried out in cross-fields that still have links. QFD results can be a tool for making improvements based on the needs or voice of the customer. Improvements made using the QFD method can increase customer satisfaction, increase profits and marketing, improve service quality, and improve product quality.
Optimalisasi Penjernihan Air PDAM Tirta Meulaboh Menggunakan Aluminium Sulfat (Tawas) dan Poly Aluminium Chloride (PAC) Marlinda Marlinda; Rita Hartati; Yusi Hidjrawan; Kasmawati Kasmawati
Jurnal Optimalisasi Vol 9, No 1 (2023): April
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v9i1.6386

Abstract

This research aimed to determine the optimum coagulant that can be used to purify PDAM Tirta Meulaboh water which often has a cloudy color during the rainy season. The coagulants used are PAC and Tawas with the chemical formula Al2(SO4)3 and Poly Aluminum Chloride is known as PAC with the chemical formula Aln(OH)mCl(3n-m). The test was carried out by mixing 10 grams of alum and PAC which were dissolved in 1000 mL of water/aquades each. The treatment was carried out by dissolving each 1 mL in 1000 mL of PDAM water sample equal to 10 ppm. Variations in the addition of PAC/alum to each container were 10, 20, 30, 40, 50 and 60 ppm. Furthermore, rapid mixing was carried out at a speed of 100-150 rpm and slow at 20 rpm. The results showed that 10 ppm of PAC added to the sample produced turbidity of 5.2 NTU and pH 7.8, 20 ppm: 4.1 NTU and pH 7.5, 30 ppm: 3.8 NTU pH 7.3, 40 ppm : 2.3 NTU pH 7.2, 50 ppm: 1.5 NTU pH 7.1, 60 ppm: 0.8 NTU and pH 7.0. Samples added with 10 ppm of alum produced turbidity of 5.5 and pH 6.8, 20 ppm: 5.1 pH 6.7, 30 ppm: 4.5 pH 6.6, 40 ppm: 3.2 pH 6.6 , 50 ppm: 4.3 pH 6.4 and 60 ppm: 5.0 pH 6.3. The conclusions from this study indicate that PAC and alum coagulants can affect turbidity and pH levels of water, the optimal addition of PAC coagulant to purify water is 20 ppm, while the optimal addition of alum coagulant to purify water is 30 ppm.
Analisis Kualitas Pelayanan Perpustakaan Menggunakan Metode Kano Kasmawati Kasmawati; Sofiyanurriyanti Sofiyanurriyanti
Jurnal Optimalisasi Vol 9, No 1 (2023): April
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v9i1.7404

Abstract

The West Aceh Regency Library and Archives Service is an agency engaged in carrying out general government tasks, building libraries, and providing services openly to its users regardless of age, education, and social status factors in society. However, there are still some problems that make visitors unsatisfied, including incomplete and non-specific book collection facilities, lack of the latest published books, placement of books on shelves that do not match the location, and inadequate facilities in the reading room. This study aims to determine and categorize the attributes that are considered important from the desire of visitors to know the quality of services provided by the West Aceh District Library and Archives Service using the canoe method. The Kano method is one of the simple methods that can improve products and services to customers. This method is a model that classifies attributes and is analyzed based on customer perceptions, and the effect on customer satisfaction. The results of calculating the average value of service quality in all dimensions of the canoe method show that visitors are not satisfied enough and there are still deficiencies in service quality at the West Aceh Regency Library and Archives Service. Of the 22 attributes, some attributes need to be improved, namely one-dimensional category attributes 5,8,9,11,14,16, and 19, indifferent category attributes 10,13,15,17,18,20,21 and 22, attributes The ones that are maintained are the attractive 12 categories and the attributes that need to be improved are the must-be categories 1,2,3,4,6, and 7 which illustrate that the more an attribute does not function properly, the visitor satisfaction will decrease.

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