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All Journal Jurnal Sains Student Research Jurnal Akademik Pengabdian Masyarakat Jurnal Ilmiah Nusantara
Ibnu Rosyid Ridwana
Universitas Tidar
Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Social Sciences Other

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TINJAUAN LITERATUR: PENYEMPURNAAN PROSES PENEMPAAN LOGAM DENGAN ANALISIS TEGANGAN DAN TEMPERATUR Ibnu Rosyid Ridwana; Fakhrurriza; Boy Arya Sadewa; Ratna Aulia Puspita Sari; Zalfa Arridwan; Sri Hastuti
JURNAL ILMIAH NUSANTARA Vol. 3 No. 1 (2026): Jurnal Ilmiah Nusantara Januari 2026
Publisher : CV. KAMPUS AKADEMIK PUBLISING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61722/jinu.v3i1.7591

Abstract

Variations in billet temperature often lead to uneven stress and heat distribution on the dies during closed-die hot forging. This review aims to identify the die regions that are most vulnerable to excessive loading and to examine how thermal conditions influence the quality of the forged product. The literature analyzed includes studies that combine finite element simulations with actual forging trials carried out at different heating temperatures. The findings consistently show that the die edges experience the highest stress concentrations, particularly when forging is performed at lower billet temperatures, which increases the likelihood of local plastic deformation. In contrast, temperatures within the optimal range promote smoother metal flow, more complete die filling, and a longer die service life. Overall, this review highlights the crucial role of proper billet temperature control in maintaining dimensional accuracy and ensuring stable forging performance.
PENGENALAN POTENSI DESA BANDUNGREJO MELALUI PENYUSUNAN BOOKLET ONLINE SEBAGAI MEDIA PROMOSI Ibnu Rosyid Ridwana; Alya Najla Khairunnisa; Risky Putri Kusumastuti; Rien Gladys Kusuma Andini; Ria Ivana Devi; Husna Khoirunnisa; Rofi'ur Rohman; Rizqi Hanung Handika; Devanda Adrian Ardistya; Hani Dwi Rahma Yulizar; Atika Nur Hidayah
JURNAL AKADEMIK PENGABDIAN MASYARAKAT Vol. 4 No. 1 (2026): Januari
Publisher : CV. KAMPUS AKADEMIK PUBLISING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61722/japm.v4i1.8806

Abstract

Bandungrejo Village, located in Ngablak District, Magelang Regency, has various village potentials, including natural resources, horticultural agriculture, and distinctive local arts and culture. However, these potentials have not been optimally utilized due to limited integrated promotional media and the low use of digital technology in information dissemination. This condition has resulted in low tourist visitation and limited economic benefits from the tourism sector for the local community. This article is an output of a Community Service Program (Kuliah Kerja Nyata/KKN) aimed at documenting and describing the implementation of an online booklet development as a promotional medium for Bandungrejo Village’s potential. The activity employed a Participatory Action Research (PAR) approach, with data collected through field observations, interviews with village officials, tourism managers, and community leaders, as well as documentation studies of village profiles and supporting data. The implementation stages included identifying and analyzing village potential, coordinating and planning concepts with community partners, producing narrative and visual content, designing and digitalizing the booklet, and distributing it through digital media using links and QR codes. The results indicate that the online booklet effectively presents village potential in a systematic, informative, and easily accessible manner. The availability of this online booklet is expected to enhance the visibility of Bandungrejo Village, strengthen its image as a nature- and culture-based tourism destination, and serve as a sustainable promotional tool for village authorities and tourism management groups in supporting rural tourism development.
Pemodelan Matematis Konsumsi Daya Belt Conveyor menggunakan Matlab untuk Analisis dan Optimasi Energi Ibnu Rosyid Ridwana; Trisma Jaya Saputra; Raka Mahendra Sulistiyo; Nurmala Dyah Fajarningrum; Arif Rahman Saleh
JOURNAL SAINS STUDENT RESEARCH Vol. 4 No. 5 (2026): Oktober: Jurnal Sains Student Research
Publisher : CV. KAMPUS AKADEMIK PUBLISING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61722/jssr.v4i5.12745

Abstract

Belt conveyor systems are material transport systems that require significant energy; therefore, mathematical models are needed to represent power requirements and energy consumption. This study aims to develop a mathematical model for belt conveyor power consumption based on the ISO 5048 standard and to evaluate its fit against actual data. The research involved modeling and simulation using MATLAB, testing inclination angles of 0°, 3°, 5°, 7°, 10°, 12°, and 15°, while maintaining a constant belt speed of 5 m/s and a conveying capacity of 900 tons/hour. Model parameters were estimated using the Least Square (LS) and Recursive Least Square (RLS) methods and compared with the Buckingham Pi approach. Evaluation was conducted using Goodness of Fit, Residual Error, Predicted vs. Actual analysis, Root Mean Square Error (RMSE), and the Coefficient of Determination (R²). The results indicate that the model effectively represents the actual data. The RLS method yielded the best performance, with an RMSE of 0.8442 and an R² of 0.9561, compared to 0.9603 and 0.9432 for LS, and 0.9751 and 0.9415 for the Buckingham Pi approach. Energy consumption increased from 24.8743 kWh at 0° to 103.47 kWh at 15°. The findings demonstrate that the developed mathematical model aligns with the fundamental concepts of ISO 5048 and is suitable for analyzing the power requirements and energy consumption of belt conveyors under the tested conditions.
Co-Authors Alya Najla Khairunnisa Arif Rahman Saleh Atika Nur Hidayah Boy Arya Sadewa Devanda Adrian Ardistya Fakhrurriza Hani Dwi Rahma Yulizar Husna Khoirunnisa Nurmala Dyah Fajarningrum Raka Mahendra Sulistiyo Ratna Aulia Puspita Sari Ria Ivana Devi Rien Gladys Kusuma Andini Risky Putri Kusumastuti Rizqi Hanung Handika Rofi'ur Rohman Sri Hastuti Trisma Jaya Saputra Zalfa Arridwan