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All Journal Sinergi Mekanika: Majalah Ilmiah Mekanika SEMAR Jurnal PADAMU NEGERI (Pengabdian pada Masyarakat Bidang Eksakta) Scientific Contributions Oil and Gas
Imaduddin, Fitrian
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Nursing Physics Public Health Social Sciences Transportation

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Pemodelan Wahana Rintang Bola untuk Meningkatan Kerja Sama Anak di Taman Mekarsari, Boyolali Santoso, Budi; Imaduddin, Fitrian; Triyono, Joko; Widodo, Purwadi Joko; Lambang G H, Raymundus Lullus; Sukanto, Heru; Ubaidillah, Ubaidillah; Arifin, Zainal; Prasojo, Yudin Joko; Prasetyo, Singgih Dwi
Jurnal PADAMU NEGERI (Pengabdian pada Masyarakat Bidang Eksakta) Vol. 4 No. 2 (2023)
Publisher : Perkumpulan Dosen Muda (PDM) Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37638/padamunegeri.v4i2.816

Abstract

Anak-anak usia dini merupakan masa dimana bermain masih menjadi rutinitas yang dilakukan setiap saat. Untuk memfasilitasi bermain anak, perlu adanya taman bermain agar anak-anak dapat berinteraksi satu sama lain. Taman bermain merupakan lingkungan yang menyediakan kesempatan bermain, belajar, rekreasi, dan berinteraksi bagi anak-anak. Taman bermain tidak hanya merupakan tempat hiburan semata, tetapi juga berperan sebagai ruang pendidikan yang mendukung perkembangan fisik, kognitif, sosial, dan karakteristik anak-anak. Maka dari itu, dilakukan Pengabdian dengan tujuan untuk meningkatkan kerja sama dari anak-anak yang bermain. Melalui kerjasama ini diharapkan dapat terbentuk sifat saling percaya dalam diri anak-anak yang masih dalam masa perkembangan. Pengabdian ini dilakukan dengan merancang wahana bermain untuk anak berupa rintang bola di Taman Mekarsari Desa Kaligentong, Kecamatan Gladagsari, Kabupaten Boyolali. wahana bermain rintang bola adalah sumber daya berharga untuk memfasilitasi perkembangan keterampilan motorik anak usia prasekolah. Penggunaan wahana bermain rintang bola dalam taman bermain dapat menjadi sarana yang efektif untuk meningkatkan keterampilan fisik dan perkembangan anak-anak secara menyenangkan dan interaktif. Hasil Pengabdian ini diharapkan dapat memberikan sumbangan yang berarti bagi pengembangan lebih lanjut dari wahana bermain yang mendukung perkembangan anak secara menyeluruh.
An MR Damper Parametric Model with luz(...) Projection Function and Its Application in an Open-loop Force Tracking Control System Hidajat, Raymundus Lullus Lambang Govinda; Imaduddin, Fitrian; Santoso, Budi; Irianto, Irianto; Putra, Azma; Ubaidillah, Ubaidillah
Mekanika: Majalah Ilmiah Mekanika Vol 23, No 2 (2024): MEKANIKA : Majalah Ilmiah Mekanika
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/mekanika.v23i2.90437

Abstract

This research discusses a parametric model with a luz(...) projection function for an outer bypass Magnetorheological (MR) damper with a meandering type valve and its application in an open-loop force tracking control system. This parametric model with the luz(…) projection function has been developed previously. The MR damper force can be controlled with open-loop force as a standard control strategy. Research on the performance of the MR damper model in open-loop control systems usually uses non-parametric models. Thus, the novelty of this research is that it uses a parametric model, i.e., the model of the luz(...) projection function as the model of the outer bypass MR damper with a meandering type valve. The proposed open-loop control system uses an inverse model that produces an electric current according to the desired force. The force tracking control scheme was realized with computer simulations using a state space approach. These simulation results show that the model with the luz(…) projection function can efficiently and accurately track the desired force in an open-loop force-tracking control system. The desired force is sinusoidal, square, and sawtooth waveform. Relative Error (RE) of 0.000, 0.0123, and 0.0563, respectively, are achieved. 
An Examination of the Fe₃O₄ nanomaterial impact in conjunction with Magnetorheological Elastomer material Priyandoko, Gigih; Ubaidillah, Ubaidillah; Imaduddin, Fitrian; Suwandono, Purbo; Sasongko, Muhammad Ilman Nur
SINERGI Vol 30, No 1 (2026)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2026.1.006

Abstract

Magnetorheological elastomer (MRE) is an advanced material class that can be used for vibration damping. This material possesses the ability to reduce vibration disturbances through adjustment of its mechanical properties in response to a magnetic field applied from an external source. The objective of this study is to ascertain the effect of incorporating Magnetite (Fe₃O₄) nanomaterials into MRE. It is expected that this new material will be more sensitive to magnetic fields in damping vibrations, which would be a significant improvement. MRE is composed of carbonyl iron powder (CIP), silicone oil, and silicone rubber, with weight proportions of 30%, 5%, and 65%, correspondingly. The addition of magnetite nanomaterials to MRE occurred at weight ratios of 0.5%, 1%, 1.5%, and 2%. Observations of this new material included elemental composition analysis and viscoelastic testing of various mixture formulations in the laboratory. From this research, it can be concluded that an MRE containing Fe₃O₄ nanomaterials has been created. For the attenuation of vibrations within the 1–100 Hz frequency range. MRE-2 (MRE with 0.5% Fe₃O₄ added) is the best choice as the primary material, as it exhibited the highest tan delta value and strong damping performance at an intermediate frequency. MRE-1 sample was used as a base material mixture without added Magnetite also an excellent choice, offering high stiffness and good damping capability at low frequencies. It is shown by the results of this experiment that the effectiveness of MRE in reducing vibration can be increased by adding Magnetite, even in the limited mid-frequency range of 0 to 100 Hz.
The Significance of Nanofluids as Working Fluids in Energy Extraction Process on Geothermal Heat Exchanger System Utilizing Abandoned Oil Wells: A Review Prihtiantoro, Dedhy; Maula, Mohamad Izzur; Imaduddin, Fitrian
Scientific Contributions Oil and Gas Vol 49 No 1 (2026)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.v49i1.1815

Abstract

Geothermal energy offers significant potential as an environmentally friendly renewable resource; however, large-scale deployment remains constrained by high drilling and infrastructure costs. Repurposing abandoned oil and gas wells as geothermal heat exchanger systems has emerged as a promising alternative, yet research on the application of nanofluids in such systems remains limited and fragmented. This review employs a narrative synthesis approach to analyze more than 80 peer-reviewed studies related to wellbore geothermal heat exchangers, working fluids, and nanofluid thermal enhancement mechanisms. The review identifies a clear knowledge gap regarding the integration of nanofluids into geothermal heat extraction processes in deep coaxial and U-tube systems, particularly with respect to long-term stability, pressure drop, and techno-economic feasibility. Findings indicate that nanofluids, especially metal-oxide and hybrid formulations, can substantially enhance thermal conductivity and heat transfer performance, with TiO₂- and CuO-based nanofluids showing the most promising results. However, challenges remain in optimizing concentration, ensuring stability, and mitigating increased pumping power. Overall, this review provides a consolidated understanding of existing research and highlights key directions for future development to improve heat extraction efficiency in geothermal systems utilizing abandoned wells.
Effect of Holding Time and Temperature of Hot Pressing on Tensile Strength of Biodegradable Plastic Made of Carrageenan Imaduddin, Fitrian; Sastra, Palgunadi; Raharjo, Wijang Wisnu; Wullandari, Putri; Ridwan, Ridwan
Mekanika: Majalah Ilmiah Mekanika Vol 21, No 2 (2022): MEKANIKA: Majalah Ilmiah Mekanika
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/mekanika.v21i2.64292

Abstract

Biodegradable plastic can be made from carrageenan by the hot press method. This method can make biodegradable plastic with large dimensions. However, the plastic quality depended on the holding time, temperature, and pressure selected during the hotpressing process. Therefore, this research is conducted to determine the effect of holding time and temperature in the hot press process on the tensile strength of biodegradable plastic made from carrageenan. The composition of the biodegradable plastic material used was 35% carrageenan, 35% polyvinyl alcohol, and 30% glycerol. The tensile strength of the composite was observed through tensile testing using a universal testing machine. fourier-transform infrared spectroscopy, X-ray Diffraction (XRD), and Scanning Electron Microscopy (SEM) tests were also conducted to sharpen the analysis. The addition of holding time led to an increase in the tensile strength of biodegradable plastics. The highest tensile strength was obtained at a holding time of 30 minutes with a value of 4.45 MPa. After 30 minutes, the tensile strength of the biodegradable composite decreased. Meanwhile, the addition of process temperature caused a decrease in the tensile strength of biodegradable plastics. The highest tensile strength was obtained at a process temperature of 100 °C with a value of 5.28 MPa.
Design Evaluations of Aerosol Suction Machine for Dental Treatment Practices in COVID-19 Era Imaduddin, Fitrian; Oryzanandi, Seraf Steva; Santoso, Budi; Hidayat, Raymundus Lulus Lambang Govinda
Mekanika: Majalah Ilmiah Mekanika Vol 20, No 2 (2021): MEKANIKA: Majalah Ilmiah Mekanika
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/mekanika.v20i2.54711

Abstract

This paper aims to demonstrate the evaluation process to select the Aerosol Suction Machine (ASM) design to be implemented in a dental treatment practice to prevent the spread of Coronavirus Disease (COVID-19). There are two designs evaluated, the movable ASM and the fixed mounting ASM. The evaluation process involved four criteria: flexibility, safety level, manufacturability, and maintenance. The evaluation is conducted based on a specific requirement of a small dental clinic located in Surakarta, Indonesia. The evaluation results show that the fixed mounting is more suitable for implementation in a small dental clinic with many natural ventilation openings.
Procurement and Operation Technical For Meniran (Phyllanthus Niruri) Extraction Equipment Santoso, Budi; Imaduddin, Fitrian; Sukanto, Heru; Triyono, Joko; Hidayat, Raymundus Lulus Lambang Govinda; Widodo, Purwadi Joko; Siswantoro, Dwi Heru
Mekanika: Majalah Ilmiah Mekanika Vol 20, No 1 (2021): MEKANIKA: Majalah Ilmiah Mekanika
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/mekanika.v20i1.45487

Abstract

At this time the government prohibits the use of antibiotics in animal feed as an Antibiotic and Growth Promoter (AGP), so an effective and safe immunomodulator and herbal growth stimulant product are needed through Meniran extract products (Phyllanthus niruri) and chemicals in the market are not yet optimal as immunomodulators and growth stimulants. CV. Maxipro Agrosatwa which is engaged in veterinary medicine, wholesale trade of agricultural products, and other live animals will produce feed using Meniran extract products. Extraction equipment that is needed is a Rotary vacuum evaporator. This equipment is needed to separate the solvent from the solute without high heating which will damage the solute content. The vacuum condition in the flask is to make the separation more efficient as well as accelerate the separation of the solvent from a solution by reducing the boiling point. The rotation of the flask is to increase evaporation. The complexity of this equipment is what makes CV. Maxipro Agrosatwa cannot handle it alone and requires technical assistance from the Department of Mechanical Engineering (Jurusan Teknik Mesin-JTM) FT UNS. Technical assistance provided by JTM FT UNS is in the form of procurement, delivery, installation, operation, and maintenance of the rotary vacuum evaporator.
Retrofit Mesin Emco Concept 55 Turning Unit Menggunakan Pengendali Mach 3/4 Untuk Meningkatkan Fleksibilitas Pembelajaran Cnc Sukanto, Heru; Istanto, Iwan; Widodo, Purwadi Joko; Imaduddin, Fitrian; Santoso, Budi; GH, R Lullus Lambang; Triyono, Joko; Wijaya, Rahman
SEMAR (Jurnal Ilmu Pengetahuan, Teknologi, dan Seni bagi Masyarakat) Vol 15, No 1 (2026): Mei
Publisher : LPPM UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/semar.v15i1.110616

Abstract

Penggunaan mesin CNC untuk menghasilkan produk dengan akurasi yang tinggi sangat penting dalam perkembangan industri saat ini. Mesin Emco Concept 55 Turning Unit adalah salah satu mesin bubut CNC yang populer pada masanya karena kehandalannya dalam menghasilkan produk dengan akurasi tinggi. Namun, seiring perkembangan teknologi, mesin ini mulai mengalami keterbatasan, terutama dalam hal sistem kontrol dan kompatibilitas dengan perangkat lunak modern. Retrofit mesin CNC adalah solusi yang semakin populer untuk mengatasi masalah ini. Retrofit dimulai dengan persiapan dan analisis awal dengan melakukan inspeksi menyeluruh terhadap kondisi mesin untuk mengevaluasi komponen mekanis, elektrik, dan sistem kontrol yang ada. Setelah itu dilakukan pembongkaran sistem kontrol lama dan memasang sistem kontrol baru serta mengatur konfigurasi perangkat lunak yang baru. Setelah semua komponen terpasang pengujian dan optimasi dilakukan agar mendapatkan hasil dan maksimal. Tahap terakhir dalam retrofit adalah finalisasi agar semua komponen terpasang dengan rapi dan aman sesuai dengan desain yang ditetapkan. Dari kegiatan ini dihasilkan mesin CNC dapat kembali berfungsi dengan baik dan kompatibel dengan software modern, memiliki antarmuka grafis yang intuitif, dan dapat terhubung ke sistem jaringan untuk mendukung pemantauan dan integrasi ke dalam ekosistem Industri 4.0. Kata kunci: CNC; Retrofit; Antar muka; Integrasi; Industri 4.0
Co-Authors Dwi Budi Santoso GH, R Lullus Lambang Heru Sukanto Heru Sukanto Hidajat, Raymundus Lullus Lambang Govinda Hidayat, Raymundus Lulus Lambang Govinda Irianto Irianto Istanto, Iwan Joko Triyono Lambang G H, Raymundus Lullus Mohamad Izzur Maula Muhammad Ilman Nur Sasongko Oryzanandi, Seraf Steva Prasojo, Yudin Joko Prihtiantoro, Dedhy Purbo Suwandono purwadi joko widodo Putra, Azma Ridwan, Ridwan Sastra, Palgunadi Singgih Dwi Prasetyo Siswantoro, Dwi Heru Ubaidillah Ubaidillah Wijang Wisnu Raharjo Wijaya, Rahman Wullandari, Putri Zainal Arifin