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All Journal Martabe : Jurnal Pengabdian Kepada Masyarakat Jurnal Rekayasa, Teknologi, dan Sains Journal of Fibers and Polymer Composites Jurnal Masyarakat Madani Indonesia Electrician : Jurnal Rekayasa dan Teknologi Elektro JEECS (Journal of Electrical Engineering and Computer Sciences)
Fauzi Ibrahim
Politeknik Negeri Lampung
Agriculture, Biological Sciences & Forestry Arts Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences

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PELATIHAN DAN EVALUASI PENGGUNAAN TRAINER HYBRID EBT TERHADAP PENINGKATAN KOMPETENSI SISWA TEKNIK INSTALASI TENAGA LISTRIK (TITL) DI SMKN 1 MERBAU MATARAM Novia Utami Putri; Agus Apriyanto; Fauzi Ibrahim; Retno Wahyudi; Alexander Sembiring; Adam Wisnu Murti; Syaiful Mansur; Ilham Saputra
Martabe : Jurnal Pengabdian Kepada Masyarakat Vol 9, No 5 (2026): MARTABE : JURNAL PENGABDIAN MASYARAKAT
Publisher : Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jpm.v9i5.2059-2065

Abstract

Pendidikan vokasi menuntut ketersediaan sarana praktik yang relevan dengan kebutuhan industri, namun SMKN 1 Merbau Mataram menghadapi kendala keterbatasan fasilitas praktik Energi Baru Terbarukan (EBT) yang menghambat pemahaman siswa secara komprehensif. Pengabdian ini bertujuan untuk mengevaluasi efektivitas pelatihan dan penerapan media pembelajaran Trainer Hybrid EBT (PLTS dan PLTB) dalam meningkatkan kompetensi siswa jurusan Teknik Instalasi Tenaga Listrik (TITL). Metode pelaksanaan dilakukan menggunakan pendekatan partisipatif melalui lima tahapan terstruktur: sosialisasi, pelatihan, penerapan teknologi, pendampingan dan evaluasi, serta keberlanjutan program. Intervensi ini menggunakan alat peraga terintegrasi panel surya 10 Wp dan turbin angin 500 W untuk mensimulasikan sistem hibrida secara nyata. Hasil evaluasi menunjukkan peningkatan signifikan pada pemahaman teknis siswa, mencapai persentase pemahaman 98% setelah pelaksanaan pelatihan. Program ini terbukti efektif menjembatani kesenjangan antara teori dan praktik, serta mendukung kemandirian sekolah dalam menyelenggarakan pembelajaran berbasis energi hijau
Optimization of Environmentally Friendly Material Selection for Automotive Mechatronics Components Using LCA Data and Multi‑Criteria Decision Making (MCDM) Fauzi Ibrahim; Teuku Marjuni; Rina Febrina; Devi Oktarina; Natalina Natalina; Rani Ismiarti Ergantara; Diah Ayu Wulandari Sulistyaningrum
JEECS (Journal of Electrical Engineering and Computer Sciences) Vol. 10 No. 2 (2025): December
Publisher : Fakultas Teknik Universitas Bhayangkara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54732/jeecs.v10i2.8

Abstract

The automotive industry faces an increasing demand for sustainable material selection as mechatronic components become more widespread in electrified vehicles. However, data-driven material selection approaches that simultaneously integrate environmental, economic, and technical criteria without laboratory experiments remain underdeveloped. This study addresses this gap by developing a computational framework that combines Life Cycle Assessment (LCA) with a Multi-Criteria Decision-Making (MCDM) approach, specifically the Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) method, using Analytical Hierarchy Process (AHP)–based weights. The framework enables a transparent and reproducible evaluation of environmentally friendly materials for automotive mechatronic components. A case study on an actuator housing evaluates seven material alternatives: Al 6061 (die-cast), recycled Al (die-cast), Mg AZ91 (die-cast), PA6-GF30 (injection), PBT-GF30 (injection), PA12 (SLS 3D print), and bio-based PBT-GF30 (injection). The criteria include total global warming potential (GWP), cumulative energy demand (CED), water use, recyclability, cost, mass, stiffness index, thermal conductivity, and supply risk. Results show that recycled aluminum achieves the highest ranking (closeness coefficient = 0.939), followed by Al 6061 (0.727) and Mg AZ91 (0.547). A Monte Carlo analysis with 1,000 iterations confirms that recycled aluminum consistently remains the best option with 100% robustness under varying weighting conditions. The proposed workflow is replication-ready and can be directly integrated with established LCA databases such as GREET, Ecoinvent, or EPD, enabling engineers to perform sustainable and quantitative material decisions using only data and computational analysis.
Life Cycle Assessment (LCA) of Natural Fiber Reinforced Polymer Composites for Automotive Interior Panels: A Comparative Study vs. Glass Fiber Composites Fauzi Ibrahim
Jurnal Rekayasa Teknologi dan sains Vol 10, No 1 (2026): Jurnal Rekayasa, Teknologi, dan Sains
Publisher : Fakultas Teknik Universitas Malahayati

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33024/jrets.v10i1.24960

Abstract

The growing demand for lightweight and sustainable vehicles is accelerating the adoption of fiber reinforced polymer composites, including natural fiber reinforced polymer (NFRP) systems for interior components. However, environmental benefits are highly dependent on resin selection, manufacturing route, transport distances, and end of life scenarios. This study presents a cradle to grave Life Cycle Assessment (LCA) comparing NFRP and conventional glass fiber reinforced polymer (GFRP) for an automotive interior panel application. A functional unit is defined as one interior panel meeting equivalent stiffness and service life requirements, enabling fair comparison between materials with different fiber density and specific mechanical performance. Life cycle inventory data are compiled from peer reviewed literature and established LCA databases, covering raw material extraction (natural fibers and glass fibers), polymer matrix production, compounding and forming processes, use phase considerations (mass related fuel/energy penalties where applicable), and end of life scenarios including landfill, incineration with energy recovery, and emerging recycling pathways. Environmental impacts are quantified using midpoint indicators (e.g., global warming potential, cumulative energy demand, acidification, eutrophication, and human toxicity), and uncertainty is addressed via sensitivity analysis on key parameters such as fiber content, resin type (petro based vs. bio based), regional electricity mix, and transportation assumptions. The results are expected to identify dominant “hotspots” across the value chain and to clarify conditions under which NFRP offers measurable reductions in greenhouse gas emissions and energy demand relative to GFRP, while also highlighting trade offs related to land use, eutrophication, and end of life emissions. The findings provide design relevant guidance for material selection and process optimization toward lower impact composite interior parts aligned with circular economy strategies.
Hybrid Natural-Synthetic Fiber Composites for Noise and Vibration Control: Linking Acoustic Performance to Environmental Sustainability Metrics Fauzi Ibrahim; Rani Ismiarti Ergantara; Ambar Pambudi
Journal of Fibers and Polymer Composites Vol. 5 No. 2 (2026): Journal of Fibers and Polymer Composites
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jfpc.v5i2.692

Abstract

Hybrid natural-synthetic fiber composites are attractive for automotive acoustic trim only when composition effects are separated from geometric effects and the computational assumptions are fully reproducible. This study presents a transparent screening framework linking normal-incidence acoustic absorption, a literature-informed vibration-damping proxy, specific stiffness, mass and constituent-production environmental metrics. Twelve polypropylene-based formulations were compared at a common thickness of 20 mm; 16, 20 and 24 mm were then evaluated separately in the thickness-sensitivity analysis. Open porosity and flow resistivity were generated by explicit bounded composition-to-property rules and used in the Miki equivalent-fluid model. Environmental inputs were evaluated with 20,000-trial triangular uncertainty propagation, while the multi-criteria ranking used winsorized normalization and 10,000 weight-perturbation scenarios of +/-15%. At 20 mm, broadband absorption averages (500-4000 Hz) occupied a narrow range of 0.612-0.636, demonstrating that acoustic comparisons are sensitive to geometry and that thickness must be controlled when isolating composition effects. Increasing thickness from 16 to 24 mm raised the modeled broadband absorption of representative natural-fiber-rich panels from about 0.55 to 0.69. C25-G10-R5 ranked first under the baseline weights and in 100% of weight-perturbation scenarios; JC30-G10 remained in the top three in 100% of scenarios and C35-rP5 in 79.1%. Median constituent-production greenhouse-gas reductions relative to GF40-PP ranged from approximately 26% to 56% for the non-aramid hybrid candidates, whereas the aramid-containing design was environmentally unfavorable. The reported damping values are screening proxies, not measured loss factors, and the environmental calculation is not a full ISO-compliant comparative LCA. The framework is therefore intended for hypothesis generation and experimental down-selection rather than direct certification of material performance.
Analisis Kinerja Komprehensive Sistem Pendingin Primer terhadap Efisiensi Pembangkit Listrik Tenaga Panas Bumi Tipe Flash Steam Agus Apriyanto; Novia Utami Putri; Retno Wahyudi; Alexander Sembiring; Fauzi Ibrahim; Adam Wisnu Murti
Electrician : Jurnal Rekayasa dan Teknologi Elektro Vol. 19 No. 3 (2025)
Publisher : Department of Electrical Engineering, Faculty of Engineering, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/elc.v19n3.2855

Abstract

Abstract. Geothermal power plants rely heavily on the efficiency of their cooling systems to optimize overall energy conversion. This study investigates the performance of the primary cooling systems, namely direct contact condensers and mechanically induced flow cooling towers in Unit 3 of PT. Pertamina Geothermal Energy Tbk, Ulubelu Area, Lampung. Performance metrics are assessed using parameters such as range, approach, and effectiveness for the cooling tower, and thermal efficiency calculations for the condenser and steam turbine. Daily operational data were collected and analyzed. The results show that fluctuations in cooling tower effectiveness significantly affect condenser vacuum and turbine efficiency. The average actual cooling tower effectiveness is 70.06%, lower than the design effectiveness of 78%. The condenser shows an average thermal efficiency of 93.80%, with effectiveness variations between 83.23% to 86.44%. The turbine efficiency based on design is 87.51%, while the actual efficiency drops to the range of 81.84% to 82.48%. This decrease indicates a performance degradation of approximately 0.94% per year. This finding underlines the important role of cooling system optimization in improving the performance of geothermal power plants.
Biochar as Reinforcement for Composite Materials in the Automotive Industry Fauzi Ibrahim; Ambar Pambudi; Randi Anggit Wibisono
Jurnal Rekayasa Teknologi dan sains Vol 10, No 2 (2026): Jurnal Rekayasa, Teknologi, dan Sains
Publisher : Fakultas Teknik Universitas Malahayati

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33024/jrets.v10i2.26436

Abstract

Biochar, also referred to as biocarbon when positioned as an engineering filler, is a carbon-rich solid obtained by thermochemical conversion of renewable biomass and organic waste under oxygen-limited conditions. Its low density, tunable surface chemistry, porous morphology, thermal stability and potential carbon-storage value make it a promising reinforcement for polymer composites in the automotive industry. This article reviews the use of biochar as a reinforcing phase in polypropylene, polylactic acid, polyamide, epoxy and rubber composite systems from an engineering design perspective. The review focuses on the interaction between feedstock, pyrolysis temperature, ash and carbon content, particle-size distribution, interfacial bonding, melt-processing behavior and automotive qualification requirements. Literature evidence shows that biochar can increase tensile and flexural stiffness, improve heat-deflection resistance, reduce smoke and heat release, and provide a mass advantage compared with mineral fillers. However, strength and impact performance are strongly non-monotonic and can degrade when agglomeration, high viscosity, weak wetting or excessive ash content dominate the microstructure. A proposed Automotive Biochar Composite Readiness Index is introduced to compare matrix-specific readiness for interior trim, instrument-panel carriers, under-hood covers, battery-enclosure inserts, rubber compounds and additive-manufactured fixtures. The analysis indicates that near-term implementation is strongest for semi-structural and non-structural parts, whereas crash-critical structures require hybridization, robust CAE material cards and full ageing, fire, fogging, odor and life-cycle assessment. The paper concludes with a qualification roadmap and design rules for translating laboratory biochar composites into automotive-grade materials.
Penerapan Mesin Chomix Portable Multifungsi untuk Pengolahan Pakan Ternak Lokal Kelompok Tani Sidomulyo Fauzi Ibrahim; Agus Apriyanto; Alexander Sembiring; Hendri Gustian; Muhammad Ridwan; Muhammad Baraa Alfarishi Maulana
Jurnal Masyarakat Madani Indonesia Vol. 5 No. 3 (2026): Agustus (In Progress)
Publisher : Alesha Media Digital

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59025/70qswh25

Abstract

Pekon Mataram, Kecamatan Gading Rejo, Kabupaten Pringsewu memiliki limbah dan hijauan pertanian yang potensial sebagai pakan ternak, tetapi pencacahan manual membutuhkan waktu dan tenaga besar serta menghasilkan ukuran cacahan yang tidak seragam. Kegiatan ini bertujuan menerapkan mesin Chomix Portable dua jalur, meningkatkan kompetensi teknis anggota Kelompok Tani Sidomulyo, dan memperkuat pengelolaan pakan berbasis sumber daya lokal. Pelaksanaan melibatkan 20 peserta melalui identifikasi kebutuhan, sosialisasi, pelatihan, praktik pengoperasian, pendampingan, dan evaluasi. Evaluasi menggunakan tes pengetahuan sebanyak 15 butir, observasi enam indikator kompetensi operator, dan uji kinerja pencacahan 20 kg bahan. Rata-rata nilai pengetahuan meningkat dari 56,7 menjadi 86,3. Waktu pencacahan 20 kg bahan berkurang dari 28,4 menit secara manual menjadi 5,2 menit menggunakan mesin atau sebesar 81,7%, sedangkan kapasitas kerja meningkat dari 42,3 menjadi 230,8 kg/jam. Sebanyak 18 dari 20 peserta (90%) memenuhi seluruh indikator kompetensi. Mesin berhasil mengolah enam jenis bahan lokal, dan kelompok telah menerapkan satu format pencatatan serta menetapkan satu operator utama dan dua operator cadangan. Keberhasilan adopsi didukung oleh kesesuaian fungsi dua jalur dengan karakter bahan lokal dan praktik langsung, sedangkan variasi kadar air, kekerasan bahan, pengaturan laju pemasukan, serta disiplin perawatan menjadi kendala utama. Penerapan teknologi meningkatkan efisiensi penyiapan pakan dan mendorong pemanfaatan limbah pertanian secara lebih teratur
Co-Authors Adam Wisnu Murti Agus Apriyanto Agus Apriyanto Alexander Sembiring Ambar Pambudi Ambar Pambudi Diah Ayu Wulandari Sulistyaningrum Ergantara, Rani Ismiarti Febrina, Rina Hendri Gustian Ilham Saputra Muhammad Baraa Alfarishi Maulana Muhammad Ridwan Natalina Natalina Novia Utami Putri Oktarina, Devi Randi Anggit Wibisono Retno Wahyudi Syaiful Mansur Teuku Marjuni