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All Journal JOURNAL OF MECHANICAL ENGINEERING, MANUFACTURES, MATERIALS AND ENERGY Sprocket : Journal of Mechanical Engineering JTTM: Jurnal Terapan Teknik Mesin
Roy Lamrun Sianturi
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Aerospace Engineering Automotive Engineering Control & Systems Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Hybrid Energy (Thermoelectric Generator-Archimedes Screw Turbine) Study and Experiment as a Green Energy Generator Based on the Internet of Things (IoT) Roy Lamrun Sianturi; Wilson Sabastian Nababan; Siwan E Parangin angin
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 8 No. 2 (2024): December 2024 Edition
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v8i2.13105

Abstract

The heat energy from the hot water source of Mount Sinabung can be used as a source of electrical energy before being channeled as a source of hot water baths. The hot water flow has a fairly high temperature and a flow rate that can be converted into a source of electricity generation using a Micro Hydro Power Plant (PLTMH) and Thermoelectric Generator (TEG). This data collection was simulated using a heat source designed in a reservoir and a cold water flow that is channeled into the PLTMH-TEG system space as a source of temperature delta. This paper aims to study the TEG series TEG1-199-1.4-0.5 and the Archimedes screw Turbine (PLTMH) as a Hybrid Generator (Green Energy). Data analysis was carried out to calculate the system power output, battery charging time, and efficiency of the TEG and PLTMH. Data analysis in this study applies the Internet of Things (IoT). Test data shows that the maximum output parameter of the PLTMH during testing, obtained a maximum voltage of 20.42 Vdc. The maximum current is 759.75 mA and the maximum water discharge is 2.31 m3/s. In the TEG system, the power generated by the TEG is 20.64 watts at a temperature difference of 70.5˚C. It is concluded that the higher the amount of discharge flowing into the Archimedes turbine system and the temperature difference absorbed by the TEG, the greater the power that will be generated and vice versa.
Digital histogram-based damage assessment of e-glass reinforced concrete cylinders Sahat Maruli Sihombing; Ibnu Hajar; Roy Lamrun Sianturi; Supriadi; Achmad Jusuf Zulfikar
JTTM : Jurnal Terapan Teknik Mesin Vol 7 No 1 (2026): JTTM: Jurnal Terapan Teknik Mesin
Publisher : Teknik Mesin - Universitas Muhammadiyah Cileungsi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37373/jttm.v7i1.2299

Abstract

Concrete cylinders are extensively utilized as standardized specimens to evaluate the mechanical behavior of structural concrete; however, their inherently low tensile strength makes them highly vulnerable to crack initiation and brittle fracture under splitting tensile loading. Although external confinement using E-glass fiber reinforced polymer (GFRP) laminates has been widely reported to enhance tensile performance, the quantitative relationship between mechanical improvement and surface crack evolution remains insufficiently established. Accordingly, this study aims to: (1) evaluate the splitting tensile strength (STS) of concrete cylinders confined with varying numbers of E-glass laminate layers; (2) quantify surface damage using a digital histogram-based crack area percentage (PCA) method; and (3) analyze the correlation between tensile strength enhancement and crack propagation characteristics. The experimental program was conducted at the Materials and Structural Testing Laboratory, Universitas Medan Area, using cylindrical specimens wrapped with one to four E-glass layers and tested under ASTM C496 splitting tensile procedures. The results demonstrate a progressive increase in STS from 2.48 MPa (control) to 3.88 MPa (four layers), representing a 56.5% improvement, with ANOVA confirming statistical significance (p = 0.003). Digital histogram analysis revealed an increase in PCA from 3.12% to 8.19%, with a strong positive correlation (r = 0.87) between STS and crack distribution. These findings indicate that enhanced confinement promotes distributed cracking and improved energy dissipation rather than brittle localization, thereby establishing a comprehensive mechanical–digital damage assessment framework for FRP-confined concrete systems.
Analisis Kinematika Dan Dinamika Mesin Pres Kaleng Berbasis Pneumatik Dengan Mekanisme Gerak Maju–Mundur Untuk Meningkatkan Efisiensi Pengolahan Limbah Logam Rinaldo Hasudungan Malau; Roy Lamrun Sianturi; Tiara Melinda; Surya Silalahi
SPROCKET JOURNAL OF MECHANICAL ENGINEERING Vol 8 No 1 (2026): Edisi Agustus 2026
Publisher : Program Studi Teknik Mesin, Universitas HKBP Nommensen, Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36655/sprocket.v8i1.2587

Abstract

The increasing amount of aluminum can waste has encouraged the development of a faster and more efficient processing system. This research focuses on the analysis of kinematic and dynamic performance of a pneumatic-based can pressing machine equipped with a forward–reverse motion mechanism. The study was conducted through machine design, fabrication, assembly, and experimental testing. The developed system used an SC 80 × 175 mm double-acting pneumatic cylinder with a working pressure of 6 bar, operated using a 5/2 solenoid valve. Experimental results showed that the actuator produced a pressing force of 3014.4 N, allowing the machine to perform stable linear movement during the pressing process. Testing on ten aluminum cans showed that the average processing time was reduced from 78 seconds in the manual process to 24 seconds using the pneumatic system. This improvement resulted in a time efficiency increase of 69.23%. These findings indicate that the developed pneumatic can press machine provides better productivity and performance for aluminum waste processing.
Co-Authors Achmad Jusuf Zulfikar Ibnu Hajar Rinaldo Hasudungan Malau Sahat Maruli Sihombing Siwan E Parangin angin Supriadi Surya Silalahi Tiara Melinda Wilson Sabastian Nababan