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All Journal Jurnal Ilmiah Giga Jurnal Pengabdian Masyarakat Intimas (Jurnal INTIMAS): Inovasi Teknologi Informasi Dan Komputer Untuk Masyarakat Jurnal Ilmiah Dinamika Rekayasa
Dewa Kusuma Wijaya
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Computer Science & IT Education

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Optimasi Proses Cutting Material Akrilik pada CNC Laser G-Weike LC6090 dengan Metode Simplex Centroid Design dan Optimasi Plot Multirespon Dewa Kusuma Wijaya; Tian Marcelina; Rudi Tjahyono; Herwin Suprijono
Jurnal Ilmiah Giga Vol 24, No 1 (2021): Volume 24 Edisi 1 Tahun 2021
Publisher : Universitas Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47313/jig.v24i1.1120

Abstract

Operasional mesin CNC laser G-Weike LC6090 untuk proses cutting menggunakan seting parameter yang sesuai agar dapat memotong material secara optimal. CNC laser tersebut diketahui seting parameter pada mesin dilakukan secara perkiraan atau asumsi dikarenakan tidak adanya acuan tabulasi level parameter seting pada mesin tersebut yang menyebabkan proses cutting pada CNC laser tersebut kurang optimal. Kesalahan seting mesin dapat mengakibatkan ketidaksesuaian hasil proses, sehingga proses seting diulang kembali secara trial error. Penelitian ini merupakan lanjutan penelitian sebelumnya terkait optimasi proses engraving. Penelitian ini berfokus terhadap optimasi level seting parameter mesin CNC laser G-Weike LC6090 untuk proses cutting. Material yang digunakan adalah akrilik berketebalan 3mm, 5mm, dan 10mm. Parameter seting yang digunakan adalah kecepatan potong (speed) dan kekuatan laser (power). Metode optimasi menggunakan kombinasi Simplex Centroid Design dan optimasi plot multirespon. Parameter respon yang digunakan adalah waktu aktual proses, dimensi panjang dan lebar dari hasil potong. Hasil penelitian ini menunjukkan level seting proses cutting yang optimal untuk akrilik berketebalan 3mm sebesar 1.93037mm/s untuk speed dan 56.6963% untuk power. Akrilik berketebalan 5mm diperoleh level seting optimal sebesar 2.6mm/s untuk speed dan 55% untuk power. Akrilik berketebalan 10mm diperoleh level seting optimal sebesar 1.1535mm/s untuk speed dan 59.539% untuk power.Kata Kunci: CNC laser, cutting, optimasi, Simplex Centroid Design, plot multirespon
Product Specific Forecasting and Capacity Allocation: A Hybrid Model for Profit Optimization in Multi Variant Food Manufacturing Ichlasul Hadi; Nur Islahudin; Dewa Kusuma Wijaya
Jurnal Ilmiah Dinamika Rekayasa Vol. 22 No. 2 (2026): Jurnal Ilmiah Dinamika Rekayasa - Juli
Publisher : Engineering Faculty, UNSOED

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jidr.2026.22.2.116

Abstract

This study addresses production planning challenges in food manufacturing SMEs characterized by heterogeneous demand patterns, limited historical data, and fixed capacity constraints. A hybrid model integrating product-specific demand forecasting and profit-maximizing linear programming is proposed to generate optimal annual production targets and profit projections. Historical sales data for four product variants are first preprocessed using the Interquartile Range (IQR) method to remove non-representative outliers. Demand patterns are then diagnosed as Beta-like, Exponential-like, or Triangular, guiding the selection of tailored forecasting methods: Moving Average (MA) for Product A, Single Exponential Smoothing (SES, α=0.5) for Products B and C, and Simple Average (SA) for Product D. The resulting forecasts serve as minimum production constraints in a linear programming model that maximizes total contribution profit under a 72,000-unit annual capacity. Implemented in POM-QM, the model yields a projected annual profit of IDR 213,514,600, with sensitivity analysis revealing a 7.7% improvement over volume-based planning and a shadow price of IDR 3,388/unit for capacity up to 75,000 units. This research demonstrates that operational excellence in resource-constrained environments stems not from model complexity, but from the thoughtful alignment of foundational quantitative methods with empirical demand behavior and financial logic.
PELATIHAN DAN PENDAMPINGAN IMPLEMENTASI SISTEM ERP SEBAGAI UPAYA PENGUATAN KOORDINASI ANTAR DIVISI PADA PT TAMAN EVENT INDONESIA Syaifudin Al Fajari; Sunarto Sunarto; Pancawati Hardiningsih; Dewa Kusuma Wijaya
Intimas Vol 6 No 2 (2026)
Publisher : Fakultas Teknologi Informasi dan Industri Unisbank

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35315/intimas.v6i2.10575

Abstract

Digital transformation encourages organizations to manage business processes in a more integrated manner through information systems capable of connecting cross-functional operations. One relevant approach is the implementation of Enterprise Resource Planning (ERP), a system that enables the integration of data, processes, and information in a unified platform. This community service activity was conducted at PT Taman Event Indonesia, an event organizer company in Semarang City, which faced cross-divisional coordination problems due to the limited use of ERP only within the finance division. Other divisions were not yet connected through the same data flow, causing information exchange to rely heavily on manual communication. This activity aimed to improve the partner’s initial understanding and skills in ERP system implementation and to assist in formulating a phased ERP adoption strategy to strengthen cross-divisional coordination. The implementation method employed a participatory approach consisting of observation, interviews, needs identification, preparation of materials, training on ERP concepts and workflows, initial hands-on assistance, and reflective evaluation. The results indicate that the partner gained better understanding of the importance of cross-divisional data integration, improved initial readiness in managing data in a more structured manner, and stronger awareness of the need for cross-divisional standard operating procedures (SOPs) as the foundation for ERP implementation. The outputs of this activity include an integration-needs mapping, improved user readiness, and recommendations for phased ERP implementation to support more effective operational governance.
Co-Authors Herwin Suprijono Ichlasul Hadi Pancawati Hardiningsih Prajanto Wahyu Adi Pramudi Arsiwi Sunarto Sunarto Syaifudin Al Fajari Tian Marcelina Tjahyono, Rudi