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Aditya Maharani
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Humanities Automotive Engineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences

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Penentuan Harga Pokok Produksi Aircraft Cabin Part (Pocket Spring) Dengan Pendekatan Time Driven Activity Based Costing (Studi Kasus Pma Unit Gmf Aeroasia Tbk.) Ahmad Rizal Fawzi; Renanda Nia Rachmadita; Aditya Maharani
Proceedings Conference On Design Manufacture Engineering And Its Application Vol 2 No 1 (2018): Conference on Design and Manufacture and Its Aplication
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GMF Aeroasia Tbk. merupakan sebuah perusahaan jasa yang berjalan dibidang repairing dan maintenance pesawat. Salah satunya adalah pocket spring. pocket spring berada dibagian belakang kursi penumpang yang berguna untuk rangka tempat penyimpanansafety book aircraft. Selama ini barang tersebut biasa diimport dari luar negeri dengan harga yang cukup mahal juga dengan waktu pengiriman yang tidak singkat. Secara perlahan PMA (Parts Manufacturer Approval) mencoba untuk memproduksi sendiri pocket spring. Akan tetapi untuk menentukan harga produksi PMA masih menggunakan metode konvensional. Time Driven Activity based Costing menawarkan solusi untuk menghitung harga pokok produksi menjadi lebih akurat. Harga pokok produksi dapat dihitung dengan mengetahui terlebih dahulu biaya kapasitas produksi dan kapasitas sumber daya yang digunakan. Untuk biaya langsung dapat langsung diketahui namun ,untuk biaya tidak langsungnya dilakukan pengamatan secara langsung terhadap model estimasi unit per waktu Harga pokok produksi pocket spring yang ditetapkan oleh perusahaan mengalami undercosting atau terlalu rendah kurang dari seharusnya. Metode konvesional perusahaan menetapkan hasil Rp. 202.0458,00/pcs, sedangkan metode time driven activity based costing mendapatkan hasil sebesar Rp. 209.877,00/pcs. Laba produk ditentukan dari markup percentage yang didapat dari target profit perusahaan dibagi dengan hasil kali volume prosukdi dengan harga pokok produksi. Hal ini yang mengakibatkan harga pokok produksi sangat mempengaruhi besarnya laba.
Analisis Nilai Efektivitas pada Mesin Gas Cutting Koike Sanso Kogyo Type IK-2000 CE HI-82 dengan Metode Overall Equipment Effectiveness (OEE) pada Perusahaan Manufaktur Alat Transportasi Devianti Kusuma Hardinata; Renanda Nia Rachmadita; Aditya Maharani
Proceedings Conference On Design Manufacture Engineering And Its Application Vol 2 No 1 (2018): Conference on Design and Manufacture and Its Aplication
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This manufacturing company is one of the BUMN that moved in transportation. This company produce train-sets and and single-parts. The material will be processed into cutting area by using automatic gas cutting machine, it is Koike Sanso Kogyo type IK 2000 CE HI-82. This machine operates in 3 shifts during 24 hours and in over time. As thi smachine is used continuously and it is used to reach target of products, so it somestimes happens ome failures from the machine and because of the failures, it takes more time to repair or controlit. Overall Equipment Effectiveness (OEE)isone of method that used to identify the value of effectivity of the equipment and to evaluate the performance of the machine. For some failures that somestimes happen in this machine will be analyzed by using Failure Mode and Effect Analysis (FMEA). All of the types failures that happen will be handled based on priority order by using Risk Priority Number (RPN). The priorities order of each failures will be found the root cause by using Fault Tree Analysis(FTA). Overall Equipment Effectiveness (OEE) used to repair the productivity of the company and used as a decision step. From all of the processing data step, the value of the Overall Equipmen tEffectiveness (OEE) on 2017 is 57,34%,with the dominan factor that influence is performance rate with the value 79,42%. Some alternative solutions that can be taken are machine daily checklist ,machine monthly checklist, and operators training.
Analisis Kelayakan Investasi Pembelian Mesin CNC Bubut Mazak 150s untuk Meningkatkan Kapasitas Produksi dengan Teknik Capital Budgeting (Studi Kasus pada CV. Gaya Indah) Afifatun Nik'mah; Aditya Maharani; Dian Asa Utari
Proceedings Conference On Design Manufacture Engineering And Its Application Vol 5 No 1 (2021): Conference on Design and Manufacture and Its Aplication
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CV. Gaya Indah (CV. GI) is a company engaged in the field of machining services. One of the products being produced is bush kora. Bush kora is a spare part of a motor vehicle that functions as a protector/house for bearings. In 2021 the number of requests for bush kora products increased rapidly to increase production capacity the company's want to change the production flow from 1 machine to 2 machines, but the number of machines in the company was not sufficient so the Company plans to invest in Mazak Quick Smart 150s CNC Lathe Machine by considering technical/operational aspects and financial aspects. The results of the analysis obtained in the technical/operational aspect is that the production capacity can meet the eligibility requirements, that is demand < production capacity. In the financial aspect, the feasibility assessment criteria using NPV (Net Present Value) has a positive value of Rp. 50.694.290,-, the percentage of IRR (Internal Rate of Return) is 9,138% and is greater than the discount factor specified, that is 6,678% , and the payback period shows that the time required to return the invested investment is 5 months 16 days faster than the project contract period, which is 1 year, so from the results of the analysis using the capital budgeting technique, it is stated that the investment plan is feasible to implement.
Evaluasi dan Optimasi Penjadwalan Menggunakan Metode PDM dan Crashing untuk Mempercepat Durasi Pengerjaan Proyek (Studi Kasus Proyek Steel Structure - Primary Crushing) Muhammad Febri Ariyanto; Renanda Nia Rachmadita; Aditya Maharani
Proceedings Conference On Design Manufacture Engineering And Its Application Vol 4 No 1 (2020): Conference on Design and Manufacture and Its Aplication
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Project is a production process that is unique, and is carried out within a certain period of time with limited resources to achieve the targets set. Steel Structure - Primary Crushing is one of mining company’s projects in East Java and is carried out by PT. Lintech Duta Pratama. But this project is past the specified deadline These lateness have consequences like fines or decreased client’s trust toward company’s performance and affect completion for other projects. Optimization is needed to avoid delays. The scheduling method used is a Precedence Diagram Method (PDM) that simpler for overlapping activities. To get a shorter duration of project completion, acceleration (crashing) analysis must be done. The results of the study obtained the duration of acceleration from 143 days to 125 days. The acceleration has two alternative, with overwork that increased the costs by 8,97% from the normal costs. While the other alternative is to add more worker that increased the costs by 0,65%. The cost of increasing the worker is lower so that alternative has the optimal cost and time.
Perancangan Tata Letak Fasilitas Lantai Produksi Modern Rice Mill Plant (MRMP) dengan Metode Systematic Layout Planning Arifah Chandra Putri Gemilang; Aditya Maharani; Dian Asa Utari
Proceedings Conference On Design Manufacture Engineering And Its Application Vol 5 No 1 (2021): Conference on Design and Manufacture and Its Aplication
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Abstract - One of the manufacturing companies in Indonesia is developing a modern rice mill plant (MRMP) project in Jember. The infrastructure development of the project requires some planning, one of which is a good layout design. The layout design in the project has problems including the arrangement of machinery that is not in accordance with the production flow, the utilization of the available area is not maximized, and does not pay attention to the close relationship between facilities so that it will cause back tracking and excessive movement that will harm the company. Solving these problems can be done by designing a new facility layout using the Systematic Layout Planning (SLP) method. The results of the research using this method were obtained as many as 4 layout proposals, then one layout proposal was chosen, namely layout 4. The selected layout proposal has a difference in OMH value and total material handling mileage with the highest initial layout and can increase efficiency in material handling by 28.88 % on total material handling mileage and 37.47% efficiency on material handling costs per day.
Optimasi Penjadwalan Produksi High Pressure Heater dengan Metode Algoritma Jadwal Non Delay pada PT. PAL Indonesia (Persero) Laili Shulfiani; Renanda Nia Rachmadita; Aditya Maharani
Proceedings Conference On Design Manufacture Engineering And Its Application Vol 4 No 1 (2020): Conference on Design and Manufacture and Its Aplication
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Scheduling is an important thing. Scheduling systems that are not suitable will have an impact on delays in the production process and delivery times. Such as problems in the High Pressure Heater production process in General Engineering division of PT. PAL Indonesia, there is a considerable inadequacy of the duration between actual production and planned production. In this study, it tries to apply and compare the proposed method of Non Delay Schedule Algorithm with the company scheduling. So from the choice of method, it is expected to produce an optimal makespan, minimize costs, and increase machine utility. Non Delay Algorithm scheduling produces sequences based on the smallest start time is Leg – Baffle Block – Head1 – Shell Skirt – Head2. While the sequences based on the completion time is Leg – Head1 – Head2 – Shell Skirt – Baffle Block. The scheduling sequence produces makespan of 589.70 hours and can minimize makespan from the company scheduling by 35.60% or equivalent to 326.07 hours. The mean shop utility in Non-Delay Algorithm scheduling has increased by 5.04% compared with company scheduling. In addition, costs of NonDelay Algorithm method decreased by 46.16% or Rp. 12,440,314, - more economical than company scheduling.
Perhitungan Kebutuhan Material Menggunakan Metode Material Requirement Planning Fiqih Baktian Rahmansya; Aditya Maharani; Rizal Indrawan
Proceedings Conference On Design Manufacture Engineering And Its Application Vol 7 No 1 (2023): Conference On Design And Manufacture Its Application
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There is a shortage of materials at PT. Ometraco Arya Samanta which caused the completion of project workthe gudang tembakau, the gudang penyetelan A & B project was delayed which affected project production. Running out of materials, messy production lines or man hours due to urgent projects and late material purchase schedules can be detrimental for PT. Ometraco Arya Samanta and the ordering party. This study aims to control material needs. The method used is the material requirement planning (MRP) method, namely by making a bill of materials to find out information about all the needs for components and the type of material used by making and completing a job to the end. And the MRP table for material requirements is obtained WF 300 35 spike, WF 500 19 spike, WF 250 29 spike, WF 600 22 spike, WF 250 21 spike, WF 200 10 spike, WF 150 24 spike, L 30 2 spike, L 40 345 spike, L 50 110 spike, L 60 478 spike. CT 200 148 spike, CNP 125 1.526 spike and CNP 100 98 spike. Meanwhile, the manhours requirement for the adjustment gudang penyetelan A & B is 2464,8 JO and gudang tembakau is 2004 JO. Then the number has a total of 4468,8 JO.
Perancangan Ulang Layout Open Storage Warehouse dengan Metode Systematic Layout Planning dan Class Based Storage Amalia Putri Abdillah; Fipka Bisono, S,ST.,M.T; Aditya Maharani
Proceedings Conference On Design Manufacture Engineering And Its Application Vol 7 No 1 (2023): Conference On Design And Manufacture Its Application
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Companies engaged in heavy equipment, both distributors and heavy equipment maintenance processes, generally have warehouses in the storage of spare parts. UT Surabaya has many support points that result in the accumulation of spare parts storage to eat other areas. As a result, the company's workflow is hampered due to improper placement of spareparts in the proper area which results in damage to spare parts. One method that can solve this problem is the Systematic Layout Planning method. This method has a detailed procedure for arranging layouts so that it can bring up more than one alternative layout. In addition, the Class Based Storage method is also used as a design and calculation of racks to design a warehousing system that is aligned within the company. The use of this method resulted in the proposed layout material handling cost, namely the total initial layout OMH was Rp759,235.74, - while the proposed layout OMH was Rp646,000.06,-,. In the comparison of OMH, it was found that the cost decreased by Rp113,235.68,- per day. So the new layout is able to increase the efficiency of mileage material handling costs.
Perbandingan Peramalan Penjualan Oil Filter di PT. United Tractors Surabaya dengan Metode Autoregressive Integrated Moving Average (ARIMA), Exponential Smoothing (ES), Trend Moment Kirana Enggar Kusuma; Farizi Rachman; Aditya Maharani
Proceedings Conference On Design Manufacture Engineering And Its Application Vol 1 No 1 (2017): Conference on Design and Manufacture and Its Aplication
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PT. United Tractors is a heavy equipment distribution company selling spare parts such as oil filters. The results of the problems being faced by PT. UT cannot meet customers' demand; therefore, an oil filter sales forecasting analysis uses the Autoregressive Integrated Moving Average (ARIMA), Exponential Smoothing (ES), and Trend Moment method. The results of calculations and research carried out after processing data from 2013 to 2022, the slightest error value is obtained in the Exponential Smoothing method with the Double Exponential Smoothing model using a= 0.9. The accuracy values obtained are MAD= 5.021, MSE= 59.674, dan MAPE= 0.086%, when compared to ARIMA, MAD= 8.192, MSE= 131.473, and MAPE= 0.152%, and Trend Moment MAD= 132.447, MSE= 17788.856, and MAPE= 2.261%. So, the chosen method is Exponential Smoothing.
Perbandingan Peramalan Penjualan Oil Filter di PT. United Tractors Surabaya dengan Metode Autoregressive Integrated Moving Average (ARIMA), Exponential Smoothing (ES), Trend Moment Kirana Enggar Kusuma; Farizi Rachman; Aditya Maharani
Proceedings Conference On Design Manufacture Engineering And Its Application Vol 7 No 1 (2023): Conference On Design And Manufacture Its Application
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Abstract

PT. United Tractors is a heavy equipment distribution company selling spare parts such as oil filters. The results of the problems being faced by PT. UT cannot meet customers' demand; therefore, an oil filter sales forecasting analysis uses the Autoregressive Integrated Moving Average (ARIMA), Exponential Smoothing (ES), and Trend Moment method. The results of calculations and research carried out after processing data from 2013 to 2022, the slightest error value is obtained in the Exponential Smoothing method with the Double Exponential Smoothing model using a= 0.9. The accuracy values obtained are MAD= 5.021, MSE= 59.674, dan MAPE= 0.086%, when compared to ARIMA, MAD= 8.192, MSE= 131.473, and MAPE= 0.152%, and Trend Moment MAD= 132.447, MSE= 17788.856, and MAPE= 2.261%. So, the chosen method is Exponential Smoothing.
Co-Authors Afifatun Nik'mah Ahmad Rizal Fawzi ALI SUBAGYO Amalia Putri Abdillah Angger Eka Bagus Aprilianto Arfianto, Afif Zuhri Arifah Chandra Putri Gemilang Asri, Purwidi Binti Mualifatul Rosydah Devianti Kusuma Hardinata Devina Puspita Sari Dian Asa Utari Farizi Rachman Fipka Bisono Fiqih Baktian Rahmansya Fitri Hardiyanti Fitri Hardiyanti Fitria Imatus Solikhah Irma Rustini Aju Kirana Enggar Kusuma Laili Shulfiani Melania Fitri Ariyanti Muhammad Febri Ariyanto Muhammad Rafii Praswad Nadia Rizki Ariyani Rangga Arie Brasis Putra Pratama Rania Ataina An'umillah Renanda Nia Renanda Nia Rachmadita Rinda Wahyu Aningrum Rizal Indrawan Taufik Nur Rahman Yugowati Praharsi