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All Journal Techno.Com: Jurnal Teknologi Informasi Rekayasa Mesin Jurnal Mekanik Terapan Dharmakayana: Journal of scientists, engineers, educators and scientific activists related to society development
Dhanang Suryo Prayogo
Teknik Mesin UIN Maulana Malik Ibrahim, Malang, Jawa Timur, 65144, Indonesia
Agriculture, Biological Sciences & Forestry Automotive Engineering Computer Science & IT Decision Sciences, Operations Research & Management Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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THE IMPACT STRENGTH AND CORROSION RATE OF THE GTAW WELDING TECHNIQUE ON AA5083 MATERIAL Dhanang Suryo Prayogo; Sugiarto Sugiarto; Putu Hadi Setyarini
Jurnal Rekayasa Mesin Vol. 14 No. 1 (2023)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v14i1.1121

Abstract

The 5xx series of Aluminium has strong corrosion resistance, excellent weldability, and good cold workability and also medium strength. This series is being utilized extensively in marine building applications for the construction of Oil tankers, pressure vessels, offshore, ships and other vessels. The purpose of this study is to verify and to ascertain how the welding process affects the corrosion rate and impact strength of 5083 Aluminium. In this experiment, four AA 5083 specimens were warmed to chosen variations of 50°C, 100°C, 150°C, 200°C, and 250°C. The amount of energy absorbed during the fracture process was then determined by subjecting the welding results to a Charpy impact test with varying loads. The best specimen was tested for corrosion rate using the Corrosion Tester 3-Electrode device after comparing impact toughness. According to the study's findings, the specimen with a 250°C preheating step had the maximum impact toughness (0.415) and corrosion rate (0.11353 mmPy).
Design and Construction of Electrical System for Bread Dough Proofer Tool Based on a Microcontroller with PID Control on Donut Dough Hidayati, Alfiana Nur; Mahartana, Ida Bagus Putu Putra; Serfandi, Dina Novera; Fahmiy, Muh Ilham; Prayogo, Dhanang Suryo
Techno.Com Vol. 24 No. 4 (2025): November 2025
Publisher : LPPM Universitas Dian Nuswantoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62411/tc.v24i4.14831

Abstract

This study focuses on the design and implementation of an electrical system for a bread dough proofer tool, specifically optimized for donut dough fermentation, utilizing a microcontroller with Proportional-Integral-Derivative (PID) control. The proofing process is crucial for dough quality, and maintaining precise temperature and humidity conditions is essential for consistent results. The PID control algorithm continuously calculates the error between desired setpoints and measured process variables, adjusting actuator outputs to minimize this error. The PID parameters were tuned using a trial-and-error method to achieve optimal response speed and stability, with values of , , and . Experimental results demonstrate the system’s effectiveness in stabilizing the proofing environment. The temperature was maintained at 40.10  with a minimal overshoot of 0.30  and a rise time of 10.25 minutes. Humidity was regulated within the range of 80-90% RH for 38.4 minutes, with a rise time of 40.41 minutes. The system exhibited robust disturbance rejection, quickly recovering from external perturbations. Compared to manual proofing, the automated system reduced proofing time by approximately 25% and significantly improved donut dough quality, evidenced by enhanced volume expansion and uniform texture.   Keywords - Bread Dough Proofer, PID Control, Microcontroller, Temperature and Humidity Control, Automated Proofing System
Analisis Perubahan Waktu dan Tekanan Injeksi terhadap Massa dan Kualitas Produk pada Proses Injection Moulding Serfandi, Dina Novera; Fahmiy, Muh Ilham; Hidayati, Alfiana Nur; Prayogo, Dhanang Suryo; Sulistyono, Sulistyono
Jurnal Mekanik Terapan Vol 6 No 3 (2025): Desember 2025
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/jmt.v6i3.7880

Abstract

The plastic injection moulding process is a dominant manufacturing method for producing high-precision components. Final product quality is highly dependent on process parameters, particularly injection time and injection pressure. This study aims to quantitatively analyze the influence of these parameters on product weight and quality, specifically in mitigating common defects such as shrinkage and short shots. Utilizing polypropylene material, a factorial experimental design was implemented by varying injection time 3,5 s, 4 s, 4,5 s and pressure 36 bar, 37 bar, 38 bar. Each parameter combination was replicated five times to ensure data validity. Product weight was measured using a digital scale, and visual quality was manually evaluated. The findings indicate that increases in injection time and pressure significantly enhanced product weight and reduced defects. An optimal combination of a 4 s injection time and 37 bar pressure was identified, yielding products with consistent weight and superior visual quality. These results offer practical guidance for optimizing production processes and improving efficiency. Keywords: Injection Moulding, Injection Time, Injection Pressure, Product Quality.
- Pemanfaatan Solar Energy Kit sebagai Media Edukasi Energi Terbarukan di Lingkungan Sekolah: - Muh Ilham Fahmiy Fahmiy; Dhanang Suryo Prayogo; Dina Novera Serfandi; Alfiana Nur Hidayati
Dharmakayana Vol 3 No 1 (2026): Mei : Dharmakayana: Journal of scientists, engineers, educators and scientific ac
Publisher : Program Studi Teknik Mesin, Fakultas Teknik Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/dk.v3i1.49265

Abstract

The limited availability of interactive teaching aids hinders students from understanding renewable energy concepts in depth. This community service study aimed to improve energy literacy among 60 high school students (30 per school) at Almaarif Islamic High School Singosari and Diponegoro Islamic High School Wagir using the Solar Energy Kit as an educational medium. A participatory, learning-by-doing method was employed, encompassing interactive lectures, tool demonstrations, and hands-on assembly practice in small groups. Students assembled photovoltaic systems and measured electrical output under varying sunlight conditions using a built-in multimeter. Pre- and post-test results showed an average knowledge gain of 40.6%, and questionnaire responses indicated a significant increase in students' interest in eco-friendly technology and environmental awareness. The Solar Energy Kit is an effective and practical teaching medium that is recommended for integration into the school science curriculum.
Co-Authors Alfiana Nur Hidayati Dina Novera Serfandi Fahmiy, Muh Ilham Mahartana, Ida Bagus Putu Putra Muh Ilham Fahmiy Fahmiy Putu Hadi Setyarini Serfandi, Dina Novera Sugiarto Sugiarto Sulistyono Sulistyono