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All Journal Science and Technology Indonesia MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Jurnal Konversi Energi dan Manufaktur Journal of Management, Accounting, General Finance and International Economic Issues (MARGINAL)
Kurniawan, Ova
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Aerospace Engineering Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences

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Carbon Micron-size Content Dependency in Epoxy/Carbon Composite Coated onto SPCC Plate for Automotive Bodies Protection Anggrainy, Rani; Susetyo, Ferry Budhi; Lubi, Ahmad; Yudanto, Sigit Dwi; Rosyidan, Cahaya; Soegijono, Bambang; Ajiriyanto, Maman Kartaman; Kurniawan, Ova; Nanto, Dwi
Science and Technology Indonesia Vol. 9 No. 4 (2024): October
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2024.9.4.989-998

Abstract

Conventional epoxy coating for surface metal corrosion protection reported many unsolved technical problems. Adding filler in the epoxy could enhance the promising properties of the composite coating. Our work describes in detail the synthesizing and characterizing epoxy/carbon composite coating. Epoxy was mixed with thinner high gloss (HG) and hardener and stirred using a stirrer apparatus. After blending, various carbons were added (1 wt. %, 3 wt. %, and 5 wt. %) and then appropriately stirred. The different mixture composite was coated onto the steel plate cold rolled coiled (SPCC) plate using high-volume low-pressure (HVLP) in two passes. Various characterizations were performed, including crystallographic orientation, Infra-Red (IR)-spectra, surface morphology, thickness, hydrophobicity, hardness, and corrosion using X-ray diffraction (XRD), Fourier transform infrared (FTIR), Scanning electron microscopy (SEM), portable dry film coating thickness (DFT), digital camera, Vickers microhardness tester, and Potentiostat, respectively. More carbon micron-sized content led to elevate the peak intensity, surface bumpiness, and hydrophobicity. The uppermost external bumpiness and hydrophobicity values are 23.51 µm and 101◦. Hardness depends on carbon content and more carbon leads to an increase in the hardness of the composited coating. The highest average Vickers hardness value is 28.24 HV. The coating thickness influenced the corrosion rate, more coating thickness promoted lesser corrosion rate. The highest coating thickness (60.8 µm) promoted a corrosion rate of around 5.65×10−4 mmpy.
Bridging Ethical and Anti‐Ethical Norms: A Framework for Enhancing Renewable Energy Investment in Indonesia Kurniawan, Ova; Triandi, Adrian Ova; Susetyo, Ferry Budhi
MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Vol 7 No 2 (2025): Motivection : Journal of Mechanical, Electrical and Industrial Engineering
Publisher : Indonesian Mechanical Electrical and Industrial Research Society (IMEIRS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46574/motivection.v7i2.439

Abstract

This paper examines the interplay between ethical norms and anti‐ethical norms in shaping investment decisions within Indonesia’s renewable energy sector. Drawing on Mertonian ethical norms as a theoretical backbone and contrasting them with non‐market strategy perspectives, the study reviews how business ethics intersect with renewable energy policy, investment, and sustainable development in Indonesia. Using recent data from national energy statistics and empirical studies on renewable energy and ESG disclosure , the paper develops a research framework. By combining institutional theory and stakeholder theory, this study uses a theory-driven conceptual qualitative approach to provide a normative-analytical framework that clarifies how ethical standards and non-market tactics influence Indonesia's investment in renewable energy. The framework suggests that a balanced approach—integrating both ethical imperatives and pragmatic market strategies—can drive progress toward national targets such as the Golden Indonesia 2045 vision and the Paris Agreement’s zero‐carbon goals.
Creation and Evaluation of a Polyurethane/Carbon/Zinc Oxide Film Composite for Use as a Coating Material Kurniawan, Ova; Soegijono, Bambang
Jurnal Konversi Energi dan Manufaktur Vol. 10 No. 2 (2025)
Publisher : Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/JKEM.10.2.9

Abstract

The material used as a coating must have unique characteristics. A frequently used coating material is polyurethane. Even though Polyurethane has been widely used as a coating material, it has limitations in thermal resistance. Incorporating fillers such as carbon and ZnO can improve its thermal, dielectric, and corrosion-resistant properties. Composite films of polyurethane with carbon, ZnO, and a mixture of both were prepared. Characterizations included FTIR, TGA, DSC, XRD, dielectric testing, salt spray, water vapor permeability, hydrophobicity, and adhesion tests. FTIR confirmed the presence of functional groups from the fillers. TGA and DSC showed improved thermal stability, particularly in carbon-filled composites. Salt spray and permeability tests indicated enhanced corrosion resistance in ZnO-filled samples, while dielectric properties improved with carbon addition. Hydrophobicity and adhesion tests met coating material criteria. Among all variants, the polyurethane/carbon composite demonstrated the most favorable combination of thermal, dielectric, and surface properties, making it the most suitable for protective coating applications.
Factors Affecting KWH Sales Through Public Electric Vehicle Charging Stations (Case Study: PT PLN (Persero) Unit Induk Distribusi Jakarta Raya) Milasari, Mimin; Adi, Tri Wahyu; Kurniawan, Ova; Siregar, Willy Novananda; Barata, Muchamad Andi
JOURNAL OF MANAGEMENT, ACCOUNTING, GENERAL FINANCE AND INTERNATIONAL ECONOMIC ISSUES Vol. 5 No. 1 (2025): DECEMBER
Publisher : Transpublika Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55047/marginal.v5i1.1929

Abstract

Electric Vehicle Charging Stations (SPKLU) constitute a pivotal element in accelerating the acceptance of electric automobiles and advancing the transition toward sustainable energy within Indonesia. The objective of this paper is to discern the determinants that shape individual preferences in acquiring kilowatt-hours through SPKLU in the operational jurisdiction of PT PLN (Persero) Unit Induk Distribusi Jakarta Raya. The variables under scrutiny encompass the components of the marketing mix, namely merchandise, pricing, site, publicity, station attendants, operational procedure, and tangible manifestation. This investigation employed quantitative descriptive as well as causal approaches, with data processing executed through multiple linear regression facilitated by SPSS version 30. The findings reveal that advantageous placement, clarity of tariffs, and digitalised publicity exert a notable impact on consumers’ resolutions regarding SPKLU utilisation. This study suggests increasing the number of SPKLU in strategic locations, providing tariff information transparency through digital media, and increasing promotions through applications and social media campaigns. Further researchers can further examine the psychological, social, and behavioral components of consumers that influence the decision to use SPKLU.
Co-Authors Adi, Tri Wahyu Anggrainy, Rani Bambang Soegijono Barata, Muchamad Andi Cahaya Rosyidan Dwi Nanto, Dwi Ferry Budhi Susetyo Lubi, Ahmad Maman Kartaman Ajiriyanto Milasari, Mimin Siregar, Willy Novananda Triandi, Adrian Ova Yudanto, Sigit Dwi