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Pramono, Agus Edy
Politeknik Negeri Jakarta
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Efektivitas pelatihan partisipatif dalam peningkatan kompetensi mekanik pompa air: Studi Percontohan di Kabupaten Bandung Adhi, Pribadi Mumpuni; Belyamin, Belyamin; Susanto, Iwan; Rahman, Haolia; Kamal, Dianta Mustofa; Pramono, Agus Edy; Nufus, Tatun Hayatun; Sukusno, Paulus; Nidhar, Ainun; Ramadhan, Mochammad Tendi Noer
Jurnal PADE: Pengabdian & Edukasi Vol 7, No 2 (2025): Oktober
Publisher : Politeknik Kesehatan Kemenkes Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30867/pade.v7i2.2794

Abstract

Farmers’ skills in maintaining water pumps remain limited, although these skills are essential for sustaining agricultural production. This study is presented as a pilot study aimed at assessing the effectiveness of participatory training in improving the knowledge, skills, and attitudes of water pump mechanics. The study involved nine mechanics under the guidance of UPTD ALSINTAN Dinas Pertanian Kabupaten Bandung, each representing one of nine affiliated areas. Evaluation was conducted using pre-test and post-test instruments with 20 items on a five-point Likert scale, analyzed descriptively without inferential statistics. The initial findings indicated an increase in the overall mean score from 3.55 to 4.78, with the largest improvements observed in skills (+46.27%) and knowledge (+39,83%). These results suggest improvements in competence, although they remain exploratory. The main limitations of this study are the small sample size and reliance on self-reported measures. Further studies with larger samples and stronger designs are recommended.
The investigation of the properties of filaments fabricated from carbon biomass and LLDPE Pramono, Agus Edy; Patrick, Yohannes; Zuhri, Aminudin; Setiyadi, Iman; Maksum, Ahmad; Indayaningsih, Nanik; Subyakto, Subyakto
Jurnal Polimesin Vol 22, No 4 (2024): August
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v22i4.5084

Abstract

This study aims to develop composites using electrically conductive carbon and polymer polyethylene (LLDPE) to enhance electrical conductivity. Investigations have been conducted on the fabrication of electrically conductive composites and the modulus of elasticity through heat compaction using mixtures of carbon-LLDPE powders. Heat compaction is performed at temperatures ranging from 120°C to 150°C, with varying composition ratios of carbon-LLDPE, including 50:50, 60:40, and 70:30 % wt. Higher proportions of carbon and compaction temperatures are correlated with increased electrical conductivity. For instance, the C7-3LLDPE composite, compacted at 150°C, demonstrates the highest electrical current flow of 0.0018 A, whereas the C5-5LLDPE composite, compacted at 135°C, exhibits the lowest current flow at 0.0000638 A. Regarding the modulus of elasticity, the composition ratio of C7-3LLDPE, compacted at 120°C, achieves the highest value at 2686.43 [N/mm2 ]. Conversely, the composition ratio of C5-5LLDPE, compacted at 135°C, yields the lowest modulus of elasticity at 1530.94 [N/mm2 ]. Elasticity modulus testing follows the ASTM D638 standard, with a speed of 2 mm/min. It is observed that increasing the compaction temperature results in a decreased modulus of elasticity across all composition ratios. Furthermore, a higher carbon content within the composite corresponds to a higher modulus of elasticity, regardless of the compaction temperature.
Study on the impact of natural graphite amount and dispersion on the electrical performance of PET/graphite composites Pramono, Agus Edy; Dewi, Anissa Puspa; Nufus, Tatun Hayatun; Indayaningsih, Nanik
Jurnal Polimesin Vol 23, No 3 (2025): June
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i3.6872

Abstract

Polymer composites have experienced rapid development in recent decades due to their ability to integrate mechanical, thermal, and electrical properties tailored for specific applications. One of the major challenges in polymer development is improving electrical conductivity, as most polymers are inherently insulating. To address this, various conductive fillers such as carbon black, graphite, carbon nanotubes, and graphene have been utilized. This study investigates the effect of natural graphite loading on the electrical conductivity, microstructure, and porosity of virgin Polyethylene Terephthalate (PET) composites. Composites containing 10%, 20%, and 30% graphite by weight were fabricated using the hot compaction method. Morphological analysis via Scanning Electron Microscopy (SEM) revealed that higher graphite content enhances filler connectivity, with the formation of conductive pathways beginning at 20% and a continuous network forming at 30%, despite some agglomeration and weak interfacial bonding. Density measurements and porosity analysis indicated that increasing graphite content leads to greater porosity, with the 30% composite reaching 19.68%. Electrical conductivity increased significantly with increasing graphite loading, exhibiting a transition from insulating to conductive behavior. The percolation threshold was identified at approximately 13.2 wt%, with conductivity rising from 0.00347 S/m at 10 wt% to 6.97 S/m at 30 wt%, consistent with classical percolation theory. These findings demonstrate that natural graphite is an effective conductive filler for PET-based composites and that its content must be optimized to balance conductivity with structural integrity.
Sifat Listrik komposit yang difabrikasi dari carbon-phenol formaldehyde Agus Edy Pramono; Yohannes PatrickR Patrick; Belyamin; Nanik Indayaningsih Indayaningsih
Recent in Engineering Science and Technology Vol. 1 No. 4 (2023): RiESTech Vol. 1 No. 4 Years 2023
Publisher : MBI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59511/riestech.v1i04.29

Abstract

This research aimed to create composites of carbon-phenol formaldehyde (PF) using carbonated rice husks as fillers. The composites showed electrical conductivity that increased with carbon content and decreased electrical resistance. The composites were evaluated for their physical, and electrical properties. The results showed that increasing PF content resulted in higher density but lower porosity, making the composites heavier. Specimens with 80% carbon weight and 20% PF weight produce an electrical conductivity of 0.055 [S/cm], while those with 70% carbon weight and 30% PF weight produce an electrical conductivity of 0.039 [S/cm]. Specimens with 60% carbon weight and 40% PF weight generate an electrical conductivity of 0.013 [S/cm].
Engineering and Process of Investment Casting for Pump Impellers Agus Edy Pramono; Arif Dermawan
Recent in Engineering Science and Technology Vol. 1 No. 4 (2023): RiESTech Vol. 1 No. 4 Years 2023
Publisher : MBI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59511/riestech.v1i04.36

Abstract

This article explains the pump impeller fabrication process using the investment casting method as an alternative to sand casting. The process aims to achieve precise dimensions, thereby reducing the need for additional machining processes. The process begins with creating a metal pattern. The metal pattern is conducted through machining with dimensional additions. The dimensions are determined by summing up the dimensional sizes, considering SS316L material shrinkage (2.5~3.5%), wax shrinkage (1%), and machining (5mm). The further process is wax injection to create wax patterns, the making of gating system, and ceramic sintering molding. The wax patterns are made separately for each part of the impeller, and then assembled into a complete wax pattern that matches the impeller's geometry and includes the gating system. The wax patterns undergo repeated dipping into slurry and stucco solutions, forming a thick ceramic layer around the wax impeller patterns. After melting the wax from the ceramic mold, cavities are left according to the impeller's geometry. Sintering the ceramic mold impeller at 1000°C forms a hard ceramic mold with cavities ready to receive the molten metal. Once the molten metal solidifies and is removed from the ceramic mold, the casting impeller is ready for further machining processes.
Design and construction of the 3D printer two-stand, controlled Arduino Mega 2560 R3 CH340G Agus Edy Pramono; Nazhmi Fadhila; Rafi Pradaya Andareska; Feri Nugroho Adi Noto; Iman Setiyadi; Aminudin Zuhri; Yohanes Patrik
Recent in Engineering Science and Technology Vol. 2 No. 3 (2024): RiESTech Vol. 2 No. 3 Years 2024
Publisher : MBI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59511/riestech.v2i03.72

Abstract

The need to show the geometry of a workpiece of a component or system on a certain scale and three-dimensionality can be realized through a three-dimensional printing press. This paper explains the techniques and how to design a three-dimensional printing machine and test product printing. The three-dimensional printing machine has been successfully created and built, and the printing test shows the results corresponding to the machine's specifications. The design and fabrication of printer 3D printing machine for PLA filament thermoplastic material has been successfully done. This machine implements an Arduino Mega 2560 R3 CH340G-based control system. The specifications of the 3D printing machine are as follows: Layer height = 0.2 [mm]; Infill density = 20%; Maximum Printing temperature = 240°C; Build plate temperature = 60°C; Print speed = 60 [mm/s]. The input comes from an AC power source that is converted to DC with an Input Power supply of 12 Volt 20 A. The machine has been tested, and parts with geometry are produced according to the machine's specifications.
Effect of Rheological on the Physical and Electrical Properties of Extruded Micro Carbon -LLDPE Composites Agus Edy Pramono; Aminudin Zuhri; Iman Setyadi; Nanik Indayaningsih
Recent in Engineering Science and Technology Vol. 2 No. 4 (2024): RiESTech Vol. 2 No. 4 Years 2024
Publisher : MBI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59511/riestech.v2i04.77

Abstract

This study focuses on formulating and optimizing a conductive polymer composite (CPC) material tailored for electromechanical applications. Linear Low-Density Polyethylene (LLDPE) polymer and micro carbon particles derived from rice husk were compounded using a hot compaction process and melt blended through a single-screw extrusion machine. A mix of 50% loading of microcarbon particles was used in this research. It was determined that the experiment was successfully conducted, resulting in a stabilized density of approximately 1 g/cm³. The research demonstrates how the prototype Extruder Head effectively stabilizes the density of composites. Electrical conductivity demonstrated a notable increase in conductivity toward higher density. These findings underscore the successful development of a CPC material with improved electrical conductivity, making it a highly suitable tool for high carbon-loading composite material.
Co-Authors Adhi, Pribadi Mumpuni Ahmad Maksum Ainun Nidhar, Ainun Aminudin Zuhri Aminudin Zuhri Arif Dermawan Arif Dermawan Arnanda, Rachmat Belyamin Belyamin Devi Handaya Dewi, Anissa Puspa Dewi, Dhora Feri Nugroho Adi Noto Iman Setiyadi Iman Setyadi Isnanda Nuriskasari Iwan Susanto Kamal, Dianta Mustofa Lingga Sakti Nanik Indayaningsih Nanik Indayaningsih Nanik Indayaningsih Indayaningsih Nazhmi Fadhila Noor Hidayati Patrick, Yohannes Paulus Sukusno Rafi Pradaya Andareska Rahman, Haolia Ramadhan, Mochammad Tendi Noer Ridlwan, Hasvienda Mohammad Sakti, Lingga Setiyadi, Iman Subyakto Subyakto Tatun Hayatun Nufus Vika Rizkia Wermasaubun, Hendrikus Yohanes Patrik Yohanes, Alvian Yohannes PatrickR Patrick Zuhri, Aminudin