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All Journal G-Tech : Jurnal Teknologi Terapan Indonesian Community Journal
Kiki Darmawan
Universitas Islam Raden Rahmat, Indonesia
Agriculture, Biological Sciences & Forestry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Energy Engineering Environmental Science Public Health Social Sciences Other

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Sosialisasi Penerapan Kesehatan dan Keselamatan Kerja Sebagai Upaya Antisipasi Potensi Bahaya Kerja Pada Bengkel Las Desa Luminu, Bantur Malang Bagus Sriwijaya; Ratna Fajarwati Meditama; Ary Kusuma Purwady; Bella Cornelia Tjiptady; Luchyto Chandra Permadi; Faisol Khoufi Asshidiqi; Kiki Darmawan
I-Com: Indonesian Community Journal Vol 4 No 2 (2024): I-Com: Indonesian Community Journal (Juni 2024)
Publisher : Fakultas Sains Dan Teknologi, Universitas Raden Rahmat Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33379/icom.v4i2.3598

Abstract

Kesehatan dan keselamatan kerja (K3) merupakan bidang yang terkait dengan kesehatan, keselamatan, dan kesejahteraan manusia yang bekerja di sebuah institusi maupun di lokasi proyek. Pengabaian prosedur K3 sering terjadi di kawasan pedesaan atau kawasan lingkungan kerja dengan menejemen prosedur K3 yang minim sehingga banyak dampak yang timbul karena suasana kerja yang tidak efisien dan sering memungkinkan terjadinya kecelakaan kerja. Tujuan pengabdian ini untuk menganalisa serta mensosialisasikan pentingnya penerapan prosedur K3. Metode yang dilakukan pada penlitian ini berupa analisis problem yang dapat menimbulkan dampak kecelakaan akibat kerja serta sosialisasi tentang pentingnya penerapan prosedur K3. Dari observasi yang telah dilakukan ditemukan berbagai macam kondisi kerja yang tidak sesuai dengan penerapan prosedur K3 yang telah ditetapkan pemerintah sebagai standart pengoperasian kerja. Dari pembahasan yang telah dijelaskan dapat diambil kesipulan bahwa penggunaan aturan penerapan prosedur sangat penting agar supaya tercipta kondisi lingkungan kerja yang aman dan nyaman serta terhindar dari kecelakaan kerja.
Vespa Motorcycle Lighting Modification Using AHP System With Fullwave Ignition Bella Cornelia Tjiptady; Indah Martha Fitriani; Rifki Zainur Rahman; Muhammad Rizal Akbar Zamzami; Muhammad Ana Zamzami; Kiki Darmawan
G-Tech: Jurnal Teknologi Terapan Vol 8 No 3 (2024): G-Tech, Vol. 8 No. 3 Juli 2024
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33379/gtech.v8i3.4820

Abstract

This study focuses on the modification of Vespa motorbike lighting by implementing the Aho system with Fullwave charging. The process involves replacing the regulator cable line with a Honda Tiger regulator to convert the AC lighting system to full wave. Additionally, the upgrade includes replacing the halfwave regulator with a fullwave kiprok type using 4 diode bridges to convert AC to DC current efficiently. LED lamps are also substituted for their energy efficiency and optimal performance with DC current. The research emphasizes the importance of enhancing lighting systems for motorcycle safety and compliance with traffic regulations. The findings highlight the benefits of these modifications in improving lighting efficiency and overall safety for Vespa motorbike users.
Analysis of Heat Rate Co-firing Pacitan PLTU Kiki Darmawan; Luchyto Chadra Permadi; Bella Cornelia Tjiptady; Ratna Fajarwati Meditama; Indah Martha Fitriani; Faisol Khoufi Asshidiqi
G-Tech: Jurnal Teknologi Terapan Vol 9 No 1 (2025): G-Tech, Vol. 9 No. 1 January 2025
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/gtech.v9i1.6211

Abstract

Through RUEN in 2025, the government is launching a co-firing program for coal-fired power plants towards achieving net zero emissions. Biomass is one solution to replace or replace fossil fuels in the field of energy supply. Some of the energy plants commonly used for co-firing are calliandra and gamal. The aim of this research is to analyze the Heat Rate efficiency of the use of calliandra and gamal biomass. This research method in quantitative form to achieve measurable results. The results of the analysis of using calliandra biomass at a percentage of 5% produce an NHPR of 2975 kCal/kWh. This value is greater than the use of gamal biomass at a percentage of 5% with a GHPR of 2942 kCal/kWh, and using a percentage of 10% produces an NHPR of 2986 kCal/kWh and at 10% gamal co-firing it produces an NHPR of 2920 kCal/kWh, the smallest thermal efficiency value is produced when the plant uses 10% kalindran co-firing with a value of 30.9%. and the highest thermal efficiency of the generator is when 10% galvanic co-firing is used.
Workshop Desain Grafis dengan Canva Solusi Kreatif untuk Siswa Pesantren dalam Menguasai Konten Promosi Digital di Tengah Keterbatasan Akses Teknologi Anisa Hudi Widaningrum; Indah Martha Fitriani; Novia Ratnasari; Kiki Darmawan; Mojibur Rohman; Muhammad Rizal Akbar Zamzami; Ismail Hasan; Diana Nadifah; Nadifa Rahma
I-Com: Indonesian Community Journal Vol 5 No 2 (2025): I-Com: Indonesian Community Journal (Juni 2025)
Publisher : Fakultas Sains Dan Teknologi, Universitas Raden Rahmat Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/i-com.v5i2.7466

Abstract

Workshop desain grafis menggunakan Canva di SMA Integratif PPAI Al- Karomah Kabupaten Malang dilaksanakan sebagai respon terhadap rendahnya literasi digital dan keterampilan desain di kalangan santri, meskipun mereka memiliki minat tinggi terhadap media sosial. Kegiatan ini bertujuan membekali santri dengan kemampuan dasar desain promosi digital melalui metode studi kasus dan Workshop praktis. Materi yang diberikan mencakup pengenalan Canva, strategi konten Instagram, serta prinsip desain seperti layout, warna, dan tipografi. Hasil observasi menunjukkan peningkatan pemahaman dan antusiasme peserta. Evaluasi dilakukan berdasarkan kualitas desain, namun penilaian berbasis unggahan Instagram tidak optimal karena keterbatasan akses perangkat. Temuan ini menegaskan pentingnya pelatihan berbasis praktik yang adaptif terhadap kondisi pesantren. Secara keseluruhan, Workshop ini berkontribusi pada peningkatan literasi digital dan menjadi langkah awal menuju pemberdayaan ekosistem digital pesantren yang mandiri dan berkelanjutan di era transformasi digital.
Structural Analysis of Compressor Connecting Rod Using Finite Element Simulation in SolidWork Luchyto Chandra Permadi; Bella Cornelia Tjiptady; Ratna Fajarwati Meditama; Kiki Darmawan; Mojibur Rohman; Faisol Khoufi Asshadiqi; Candra Pradhana
G-Tech: Jurnal Teknologi Terapan Vol 9 No 3 (2025): G-Tech, Vol. 9 No. 3 July 2025
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/g-tech.v9i3.7504

Abstract

The connecting rod in a compressor plays a critical role in transmitting the reciprocating motion from the piston to the crankshaft, making it a vital component that is constantly subjected to cyclic loads and stresses. This study aims to evaluate the structural strength and reliability of a compressor connecting rod by utilizing Finite Element Analysis (FEA) through SolidWorks Simulation software. The connecting rod was modeled with realistic geometric dimensions and material properties commonly used in household refrigerator compressors, such as aluminum alloys or medium-carbon steel. The simulation was performed by applying realistic boundary conditions, including compressive forces, reaction loads from the crankshaft, and constraints reflecting actual operational conditions. The results of the finite element simulation provided insights into the stress distribution, deformation patterns, and safety factors of the connecting rod under various load conditions. The maximum von Mises stress was identified in the transition area between the rod and the crank pin, which is consistent with typical failure points found in previous studies. From the analysis, it was concluded that the existing design provides an acceptable safety factor under normal working conditions, but optimizations in material thickness and fillet radius at critical regions could further enhance durability and reduce the risk of fatigue failure. This study highlights the importance of structural analysis in improving the reliability and longevity of compressor components through simulation-based design validation.
Sustainable Analysis of Calophyllum Inophyllum Oil for Eco-Friendly Green Lubricants as an Alternative to Mineral Oils Kiki Darmawan; Novan Habiburrohman; Mudrikah Mudrikah; Mohammad Na’im Humam; Bagus Sriwijaya; Luchyto Chandra Permadi; Farisan Robbani; Mojibur Rohman
G-Tech: Jurnal Teknologi Terapan Vol 10 No 1 (2026): G-Tech, Vol. 10 No. 1 January 2026
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/g-tech.v10i1.8231

Abstract

Calophyllum Inophyllum (nyamplung) Oil is recognized as a promising non-edible vegetable oil for the development of sustainable green energy lubricants. This study aims to improve the physicochemical characteristics of nyamplung oil through a two-step transesterification followed by esterification using trimethylolpropane (TMP), and to assess its tribological performance. The refined oil exhibited a flash point of 212 °C (ASTM D92) and a pour point of 8 °C (ASTM D97), indicating excellent thermal and flow stability. The kinematic viscosity was 38.3 cSt (ASTM D445) and the density 0.88 g/cm³ (ASTM D4052), both within industrial lubricant standards. The acid value decreased markedly from 36.5 to 1.62 mg KOH/g, while the iodine value (0.006 g I₂/100 g) and peroxide value (0.23 Meq/kg) demonstrated chemical stability. FTIR analysis confirmed the formation of ester functional groups, and GC–MS results showed a balanced distribution of saturated and unsaturated fatty acids. Overall, the modified Calophyllum Inophyllum Oil fulfills key technical criteria for eco-friendly green energy lubricants and shows strong potential as a renewable alternative to conventional mineral-based lubricants in industrial applications. Nevertheless, its crude form presents several drawbacks, including high acid and peroxide values as well as poor oxidative stability.
Co-Authors Anisa Hudi Widaningrum Ary Kusuma Purwady Bagus Sriwijaya Bella Cornelia Tjiptady Candra Pradhana Diana Nadifah Faisol Khoufi Asshadiqi Faisol Khoufi Asshidiqi Farisan Robbani Fitriani, Indah Martha Ismail Hasan Luchyto Chadra Permadi Luchyto Chandra Permadi Permadi Mohammad Na’im Humam Mudrikah Mudrikah Muhammad Ana Zamzami Muhammad Rizal Akbar Zamzami Nadifa Rahma Novan Habiburrohman Novia Ratnasari Ratna Fajarwati Meditama Rifki Zainur Rahman Rohman, Mojibur