Article Per Year (5 Year)
p-Index From 2021 - 2026
1.879
P-Index
This Author published in this journals
All Journal World Chemical Engineering Journal Jurnal Rekayasa Teknologi dan Sains Terapan Teknologika Journal of Management and Industrial Engineering (JMIE)
Diki Muchtar Diki
STT Wastukancana
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mathematics Mechanical Engineering Physics Other

Published : 10 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 10 Documents
Search

 1 
Merumuskan Formula Pakan Ayam Kampung Petelur Menggunakan Model Interval Linier Programing Diki Muchtar Diki
Jurnal Rekayasa Teknologi dan Sains Terapan Vol 4 No 1 (2022): Jurnal Rekayasa Teknologi dan Sains Terapan
Publisher : LPPM, Sekolah Tinggi Teknologi DR. KHEZ Muttaqien

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

ABSTRACTThere have been several researchs conducted on the feed formulation such as (Samuel Olugbenga .O et al, 2015) linier programing, (F.Zhang W.B.Roush, 2002) mutiple-objective programming, (Brigitta Ayu Kusuma Wardhany et al, 2017) Particle swarm optimization, (Nur Firra Hasjidla et al, 2018) Improved Particle swarm optimization, (I.U. Udo et al, 2011) linier programming, (Thuleswar Nath, 2014) linier programing without interval coefficient. This research is like a Thuleswar Nath research but uses interval data (interval coefficient) so that it requires a interval linear programming model in feed formulation that is the best and the worst case method (M.allohdadi,2012). This research aims to determine parameters and variables of model for feed formulations with a interval linear programming model and calculate the optimum solution to decide the total cost required according to the nutrients needed. The data is processed using the best and the worst case method (interval linear programming) than after that it is optimized using linear programming software. Optimum solution of the worst case is 587.958.1, with the consentrate (x1) 43,52 kg, Corn (x2) 42,41 kg, Rice Bran (x3) 0 kg, Tofu Dregs (x4) 6,43 kg , Cassava Dregs (x5) 7,62 kg. And than optimum solution of the best case is 425.686.6, with the consentrate (x1) 29,62 kg, Corn (x2) 51,02 kg, Rice Bran (x3) 2,51 kg, Tofu Dregs (x4) 6,20 kg , Cassava Dregs (x5) 10,63 kg.
Usulan Perbaikan Sistem Perawatan Mold Injeksi Shround Fan 8701 Menggunakan Metode Failure Mode Effect Analysis dan Fault Tree Analysis di PT. XYZ Hedi Iskandar; Diki Muchtar Diki; Indra Gumelar; Yayah Ruqiyah
Jurnal Rekayasa Teknologi dan Sains Terapan Vol 4 No 2 (2023): Jurnal Rekayasa Teknologi dan Sains Terapan Vol. 4 No. 2
Publisher : LPPM, Sekolah Tinggi Teknologi DR. KHEZ Muttaqien

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

PT XYZ merupakan salah satu perusahaan yang bergerak dibidang manufaktur jenis jasa injeksi plastik berbagai komponen otomotif kendaraan roda roda empat khususya kendaraan mobil, pada saat proses produksi salah satu mold belum siap produksi maka harus dilakukan change planning yaitu diganti ke mold yang sudah siap produksi. Penelitian ini menggunakan metode Failure Mode Effect Analysis untuk mengeidentifikasi failure mode dan mengetahui nilai risk priority number yang paling tinggi, Fault Tree Analysis untuk menentukan konsekuensi kegagalan yang ditimbulkan dari failure mode dan menentukan kebijakan perawatan mold injeksi shround fan 8701 untuk komponen dengan nilai Risk Priority Number tertinggi, dari hasil Failure Mode Effect Analysis nilai Risk Priority Number tertinggi yaitu 164 yang terdapat pada komponen Surface Mold (SFC). Dari hasil dengan menggunakan Fault Tree Analysis maka diketahui akar penyebab breakdown mold pada mold injeksi shround fan 8701 ada dua faktor yaitu flash dan colar U sulit dipasang, untuk kebijakan perawatan pada komponen tersebut dengan menerapkan corrective action yaitu tambal magnet colar dengan locktite dan Finishing dudukan colar U pada cavity dan core.
SIMULASI SISTEM ANTRIAN LOKET PARKIR KENDARAAN DI MALL STS (SADANG TERMINAL SQUARE) Ihsan, Muhammad Ihsan; Dimas Wismono; Diki Muchtar
Jurnal Teknologika Vol 14 No 1 (2024): Jurnal Teknologika
Publisher : Sekolah Tinggi Teknologi Wastukancana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51132/teknologika.v14i1.380

Abstract

Vehicle queues formed in front of the gate of the ticket collection counter at STS Mall can cause problems and queue lengths that can interfere with other traffic movement systems. Therefore, it is very important to review the queuing system at the gate of the parking ticket collection counter at STS Mall. This study aims to examine the queuing system and determine alternatives to improve four-wheeled vehicle queuing services at the ticket collection counter to enter the parking lot at STS Mall. The main data needed in this study are vehicle arrival rates and counter service times. The data were obtained respectively using traffic enumeration methods and sampling observations, which were carried out at the entrance counter of four-wheeled vehicles and carried out on Saturdays and Sundays. The analysis method uses Queue Theory. The results of the analysis show that the number of counters 1 piece is still able to serve the current level of vehicle arrivals which gives a value of n ranging from 0.34 - 0.37 vehicles (( 1 vehicle) , q ranging from 0.08 - 0.06 vehicles (( 1 vehicle), d ranging from 8.2 - 8.6 seconds, and w ranging from 2.1 - 2.5 seconds. At an arrival rate above 600 vehicles / hour are no longer able to be served with the number of counters (N) as much as 1 piece without improving the queuing system
Line Balancing with Simulation Approach (ProModel) on SMC Big Volume Lane in HA Export Department at PT. XYZ Purwito, Dewanto Djoko; Ramlan Yuniar Velani; Diki Muchtar; Handayani , Suci Tresna Dewi
Jurnal Teknologika Vol 15 No 1 (2025): Jurnal Teknologika
Publisher : Sekolah Tinggi Teknologi Wastukancana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51132/teknologika.v15i1.456

Abstract

This research aims to identify and overcome bottlenecks in production process at PT. XYZ Indonesia, especially in HA Export Department on SMC Big Volume Lane. Bottlenecks were detected in Visual Acc and Housing processes, which resulted in decreased efficiency and productivity. The method used in this study is line balancing with the Pro Model simulation approach, which allows analysis of improvement scenarios without disrupting ongoing operations. Data collected includes process time and machine capacity. Initial simulation results showed significant idle time 15,4%, with accumulation at Raw Material workstation (12.30%), Housing workstation (1.20%), and Visual Acc (1.90%). After the improvements were made, including increasing the Raw Material capacity to 20 pcs, the Housing process to 3 pcs, and Visual Acc to 3 pcs, the bottleneck was successfully eliminated from 15.4% became 0% and the production flow became more stable. This research provides practical solutions to improve efficiency and reduce cycle time, and can be a reference for companies in implementing line balancing and simulation methods to improve productivity in the manufacturing industry.
Bottleneck Analysis in Garment Production Process Using Simulation Approach (ProModel) Muchtar, Diki
Jurnal Teknologika Vol 15 No 1 (2025): Jurnal Teknologika
Publisher : Sekolah Tinggi Teknologi Wastukancana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51132/teknologika.v15i1.457

Abstract

Garment industry is a labor-intensive manufacturing sector with a complex production flow, highly susceptible to bottlenecks. Unresolved bottlenecks can lead to decreased efficiency, increased waiting times, and reduced productivity. This research aims to analyze bottlenecks in the garment production process using a simulation approach with ProModel software. The research method was carried out using a quantitative-descriptive approach, starting with production system selection, process flow mapping, and simulation model development and testing. The results of the original model simulation show a production output of 1.719 units, with a bottleneck of 3,86% and a cost of USD 38,01. This situation requires improvement, which was achieved through scenario 1, where production capacity at each location was increased, considering a relatively similar cost of USD 41,40. This change reduced the bottleneck to 0,60%, and total production increased to 1.811 units. In scenario 2, with a similar cost, the author recommended further adjustments to the production capacities at the required processes. After conducting the simulation, total production increased to 1.908 units, with a cost of USD 41,42. The simulation using ProModel proved effective in systematically identifying and evaluating bottleneck solutions. This research provides practical recommendations for garment industry management in making data-driven decisions to improve production efficiency. keyword: Bottleneck; Garment Industry; Simulation; ProModel; Production Efficien
Analysis of Quality Control of Drawn Textured Yarn Using Six Sigma Method at Indorama Engineering Polytechnic Production Unit Ulum, Rikzan Bachrul; Agassi, Andre; Muchtar, Diki
World Chemical Engineering Journal VOLUME 9 NO. 1 JUNE 2025
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/wcej.v9i1.33651

Abstract

Drawn textured yarn is one of the production outputs of the Vocational Training Center at Politeknik Enjinering Indorama, a partner of PT Indorama Synthetics Tbk. In its production process at the Vocational Training Center of Politeknik Enjinering Indorama, product defects are still encountered. To reduce product defects, the Six Sigma method with DMAIC approach is employed. For companies prioritizing product quality, quality control over the products must be conducted. This can manage and control the number of rejected or damaged products that could potentially harm the company's reputation in the eyes of consumers when the products are marketed.
SIMULASI PROSES PRODUKSI KERUPUK KULIT DOROKDOK PD.ABC SUKAREGANG – GARUT Muchtar, Diki; Herdiansyah, Ferry; gumelar, indra
Jurnal Teknologika Vol 14 No 1 (2024): Jurnal Teknologika
Publisher : Sekolah Tinggi Teknologi Wastukancana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51132/teknologika.v14i1.364

Abstract

PD.ABC experienced problems with an inefficient production system. This is indicated by the minimum amount of output that can be sent. This becomes a source of problems when there is a large order of dorokdok skin crackers, which cannot be completely filled. Therefore, this research will analyze the factors that become obstacles in the dorokdok skin cracker production system using a system modeling and simulation approach. The conclusion was that in the PD dorokdok skin cracker production system. ABC still lacks workers for the production process. This causes the failure rate in sending dorokdok skin crackers to still exist and losses occur. With 2 operators, the maximum output produced is only 63 pcs/day with costs incurred of Rp. 2,950,000 and the profit obtained is only Rp. 1,260,000 or it could be interpreted that PD.ABC suffered a loss of Rp. 1,690,000. After improvements were made, by adding 3 operators it was seen that the simulation results did not show any failures in the production process flow of dorokdok skin crackers with the maximum output produced being 500 pcs/day, the total costs incurred amounting to IDR 6,850,000 and the profit obtained amounting to IDR 10,000,000 or it could be interpreted as PD.ABC experiencing a profit of IDR 3,150,000. So it can be concluded that the improvements made have been effective by increasing human power thereby increasing PD dorokdok skin cracker production capacity. A B C
Peningkatan Throughput Produksi Manufaktur dengan Simulasi DES dan Teknik Optimasi Taguchi Diki Muchtar
Jurnal Teknologika Vol 16 No 1 (2026): Jurnal Teknologika
Publisher : Sekolah Tinggi Teknologi Wastukancana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51132/teknologika.v16i1.682

Abstract

Improving throughput in production is one of the main challenges in manufacturing systems. This study aims to enhance throughput by using Discrete Event Simulation (DES) combined with the Taguchi optimization technique to identify key factors influencing production performance. The simulation was conducted on a manufacturing production system with three tested factors: X1, X2, and X3, as well as two main responses: throughput (Y1) and bottleneck (Y2). Based on the simulation results, it was found that an increase in factor X3 significantly contributed to throughput improvement, while simultaneously reducing the bottleneck percentage, indicating better efficiency in the production line. For example, in experiment run 7 (X1 = 3, X2 = 0.4, X3 = 0.4), throughput reached 3,525 pieces, with a very low bottleneck percentage of 9.66%. Other simulation results also showed throughput improvements with reduced bottleneck, such as in runs 8 and 9, which had throughput of 3,524 pieces and 2,936 pieces, with bottleneck percentages of 19.66% and 15.66%, respectively, showing more optimal results. The Taguchi optimization technique was used to minimize variability and improve the quality of the production system output. The results of this study indicate that the combination of DES simulation and Taguchi optimization successfully increased production throughput significantly while reducing bottlenecks in the production process. This study contributes to the application of simulation and optimization in improving production efficiency in the manufacturing industry, with the hope that it can be adapted to various types of production systems.
PERENCANAAN PRODUKSI YANG OPTIMAL DENGAN METODE LINIER PROGRAMMING PADA PT. LAJU PERDANA INDAH Diki Muchtar
Journal of Management and Industrial Engineering (JMIE) Vol. 2 No. 1 (2023): MARET
Publisher : LPPM Sekolah Tinggi Teknologi Nusantara Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (533.271 KB)

Abstract

Kuantitas penjualan sangat mempengaruhi jumlah bahan yang dibutuhkan dalam proses produksi, mulai dari pembelian hingga menjadi produk akhir. PT Laju Perdana, sebuah perusahaan manufaktur gula, adalah pemain baru di pasar dan menghadapi persaingan yang ketat dari perusahaan gula yang sudah mapan. Masalah penelitian adalah bagaimana mengembangkan model pemrograman linier yang optimal untuk perencanaan produksi yang meminimalkan biaya produksi untuk PT Laju Perdana, dan berapa biaya yang diperlukan untuk berbagai pilihan sumber daya dalam perencanaan yang optimal tersebut. Metode penelitian menggunakan pemrograman linier untuk menentukan biaya produksi yang optimal berdasarkan kuantitas bahan mentah dan ketersediaan tenaga kerja dalam proses produksi. Validasi data dilakukan dengan menggunakan WinQSB 2.0 untuk menganalisis sensitivitas beberapa elemen dalam perencanaan produksi. Studi ini menyimpulkan bahwa perusahaan dapat mencapai biaya produksi yang optimal dengan menggunakan pemrograman linier berdasarkan kuantitas bahan mentah, yang menghasilkan kapasitas penyimpanan minimum sebesar Rp. 7.692,3 dan biaya penyimpanan maksimum sebesar Rp. 34.667. Temuan ini akan mempengaruhi kapasitas produksi perusahaan di masa depan dalam kemasan unit penjualan. Rekomendasi untuk perusahaan adalah meningkatkan biaya produksi sebesar 26% hingga 27% setiap tahun dengan melakukan perencanaan yang cermat, seperti restrukturisasi anggaran produksi, peningkatan harga produk, memperluas pangsa pasar, meningkatkan promosi, menciptakan variasi produk baru, dan lain-lain.
OPTIMASI DISTRIBUSI KONVEKSI PAKAIAN DENGAN PENDEKATAN SIMULASI (STUDI KASUS CV. XYZ) Anisa Pauziah; Diki Muchtar; Muhamad Ihsan; Tarman
Journal of Management and Industrial Engineering (JMIE) Vol. 3 No. 2 (2024): SEPTEMBER
Publisher : LPPM Sekolah Tinggi Teknologi Nusantara Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

One of the biggest challenges faced by garment manufacturing companies is optimizing the distribution of products to improve operational efficiency and minimize costs. Timely and effective distribution is crucial to ensure customer satisfaction and maintain the company's competitiveness. Therefore, efforts need to be made to optimize the distribution system in garment manufacturing companies by utilizing the latest technology, one of which is through simulation approaches. The aim of this research is to apply simulation to optimize the clothing distribution at CV. XYZ and provide recommendations for improving efficiency and reducing distribution costs. To achieve the research objectives, a case related to the distribution system was selected and analyzed in depth, specifically at CV. XYZ. To analyze this case, this research employs a case study strategy focusing on data collection from relevant distribution systems. One of the tools used to describe the distribution process systematically is a flowchart, which provides a visual overview of the sequence and relationships between various stages in the distribution process. The simulation results indicate that the distribution system at CV. XYZ could be improved by increasing the schedule from once to twice, rather than by adding distribution units. In terms of costs, this approach reduces the expenses, with the additional schedule only adding a fuel cost of IDR 46,800,000, while adding units would incur a cost of IDR 615,600,000.
Co-Authors Agassi, Andre Anisa Pauziah Dimas Wismono Hedi Iskandar Herdiansyah, Ferry Ihsan, Muhammad Ihsan Indra Gumelar Indra Gumelar Muhamad Ihsan Purwito, Dewanto Djoko Ramlan Yuniar Velani Suci Tresna Dewi Handayani Tarman Ulum, Rikzan Bachrul Yayah Ruqiyah