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All Journal International Journal of Renewable Energy Development Mechatronics, Electrical Power, and Vehicular Technology Jurnal Teknik Mesin Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Jurnal Teknologi SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Rekayasa Mesin Sinergi Prosiding Semnastek Indonesian Journal of Science and Technology Jurnal Penjaminan Mutu Journal of Community Services and Engagement Jurnal Elemen Teknomekanik Community Empowerment Advance Sustainable Science, Engineering and Technology (ASSET) Jurnal Teknik Mesin Asean Journal of Science and Engineering (AJSE) Mechanical Engineering for Society and Industry Automotive Experiences Jurnal Bisnis dan Kewirausahaan Urecol Journal. Part D: Applied Sciences Innovation in Health for Society Jurnal Penjaminan Mutu International Journal of Renewable Energy Development Advance Sustainable Science, Engineering and Technology (ASSET)
Muji Setiyo
Universitas Muhamadiyah Magelang
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Transportation Other

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Preparation and mechanical characterization of natural polymer composite material obtained from fox tail palm seeds Kolakoti, Aditya; Geeri, Satish; Rochman, Muhammad Latifur; Setiyo, Muji
SINERGI Vol 28, No 3 (2024)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2024.3.007

Abstract

This experimental investigation reveals the preparation of natural composite material from foxtail palm tree seeds. The fruits from the foxtail palm tree are used for the extraction of oil, and the by-product of the extraction process is freely dumped. This study attempts to utilize the waste by-product of foxtail palm tree fruit as a valuable natural composite material. The fabrication was done using the hand lay-up method for the proposed reinforcement (4% and 8%) of filler materials. The obtained composite materials are subjected to significant mechanical characterization of tensile behaviour, flexural property, and hardness. In addition, the morphological study was also carried out by the scanning electron microscope (SEM). The results show that, as the reinforcement percentages of filler material increase, the mechanical properties are improved. This may be due to the uniform dispersion of natural fibres in the polymer. The tensile strength was improved by 22.43% and 29.08% for 4% and 8% filler reinforcement. Similarly, the stiffness property was improved by 9.32% for 4% reinforcement and 18.68% for 8% reinforcement when compared with neat composite. The SEM images reveal the failure analysis, bonding strength and fibre pull-out in the composites. Finally, the foxtail fruit fibre shows promise as a reinforcing agent in composite materials, improving their mechanical properties and making them suitable for various applications requiring strength, stiffness, and resistance to deformation.
Enhancing heat transfer performance of automotive car radiator using camphor nanoparticles: experimental study with bibliometric analysis Kolakoti, Aditya; Setiyo, Muji; Husaeni, Dwi Novia Al; Nandiyanto, Asep Bayu Dani
Teknomekanik Vol. 6 No. 2 (2023): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/teknomekanik.v6i2.25072

Abstract

In this study, an attempt was made to investigate the heat transfer performance of a four-wheeler automotive radiator using a novel coolant system. To support this study, we also added bibliometric analysis to show the importance of this study. In the experiments, camphor nanoparticles (sizes of 511 nm) with various loadings (i.e. 2, 4, 6, and 8%) were mixed with deionized water (DW) to create a coolant. The experiments were conducted at different heat convection processes (i.e. 0.5, 1.45, and 3.7 m/s). The significant heat transfer performance parameters, such as Reynolds number (Re), Nusselt number (Nu), overall heat transfer coefficient (U), and heat transfer rate (Q), were examined. The Fourier Transform Infrared results revealed the presence of significant functional groups in the coolant system. camphor nanoparticles dispersed in DW were stable for more than 8 hours. At 70 ᵒC, the novel coolant (2% camphor nanoparticles in DW) exhibits better Re, Nu, U, and Q than that using pure DW or other loadings of nanoparticles (e.g. 4, 6, and 8%). The high percentage of camphor nanoparticles in DW restricts the fluid flow, resulting in a drop in overall heat transfer performance. Finally, low-cost, easily available, and eco-friendly camphor nanoparticles (2%) are suggested as a better choice in lieu of high-cost metallic and non-metallic nanoparticles as an additive in the coolant system.
Sustainable energy for future needs: An imperative for a greener tomorrow Kolakoti, Aditya; Setiyo, Muji
Mechanical Engineering for Society and Industry Vol 4 No 1 (2024)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.11728

Abstract

According to Worldometer, around 8.1 billion inhabitants survive on mother earth, and earth provides the most essential resources like oxygen and water for survival. However, humanity has taken advantage of available resources on earth and has started exploring them with the available technology and machinery. As a result, the rapid consumption of exhaustible energy sources like fossil fuels, the purposeful clearing of forested lands, water pollution, industrialization, and waste disposal into the environment are increasing faster. Due to these activities, the earth's ecosystem is in great danger and requires an immediate remedy to safeguard it. Therefore, relying on renewable energy sources and promoting sustainable energy for future needs is one of the possible solutions to prevent environmental damage.
Vapor compression refrigeration system with air and water cooled condenser: Analysis of thermodynamic behavior and energy efficiency ratio Setiyo, Muji; Rusdjijati, Retno; Habibi, Ilham; Rochman, Muhamad Latifur; Purnomo, Bagiyo Condro; Pertiwi, Fungky Dyan; Waluyo, Budi; Ismail, Rifky; Kolakoti, Aditya
Teknomekanik Vol. 7 No. 2 (2024): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/teknomekanik.v7i2.31972

Abstract

This study presents the analysis of thermodynamic behavior and energy efficiency of a vapor compression refrigeration system with two types of condensers: air-cooled (ACC) and water-cooled (WCC). The main objective is to assess the system performance by comparing the Coefficient of Performance (COP) and Energy Efficiency Ratio (EER) under both condenser configurations. During a 12-hour test period, data on refrigerant pressure, temperature, and electrical energy consumption were collected and analyzed. The results show that the WCC system outperforms the ACC system, showing a 5.7% increase in heat rejection and a 4.2% increase in cooling capacity. In addition, the WCC system exhibits a lower compressor duty cycle and consumes less electrical energy, resulting in a higher total EER of 5.658 compared to ACC of 1.945. These findings suggest that integrating a water-cooled condenser into a refrigeration system can significantly improve energy efficiency and reduce operating costs, making it a viable option for commercial applications in tropical regions.
Advancements in sustainable material development: A Comprehensive review of coir fiber and its composites Imran, Al Ichlas; Siregar, Januar Parlaungan; Cionita, Tezara; Hadi, Agung Efriyo; Setiyo, Muji; Mat Rejab, Mohd. Ruzaimi; Jaafar, Jamiluddin; Fitriyana, Deni Fajar; Dewi, Rozanna
Mechanical Engineering for Society and Industry Vol 4 No 3 (2024): Special Issue on Technology Update 2024
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.12556

Abstract

Derived from Coir coconut waste, coir fiber offers an environmentally friendly response to ecological challenges in various industries. Its application aligns with achieving Sustainable Development Goals (SDGs), such as eliminating extreme poverty, ensuring food security, and promoting decent employment and economic expansion. It also fosters environmentally friendly consumption and production, mitigates global warming, and conserves biodiversity. The study involves a comprehensive review of current literature, examining the methodologies including extraction techniques, surface modifications, and manufacturing processes like hand layup, casting, compression molding, hot pressing, and injection molding. The analysis identifies key improvements in mechanical, thermal, and physical properties of coir fiber composites, particularly enhanced tensile strength, thermal stability, and reduced water absorption due to chemical treatments. This confirms previous findings and contributes toward enhancing our understanding that coir fiber is extensively utilized in multiple industries, including housing, construction, transportation, biomedical, wrapping, electrical power, communication technology, biofuel, and bioenergy due to their natural abundance, affordability, ease of shaping, superior durability, and eco-friendly characteristics. Another crucial practical implication is that coir fiber and its composites offer numerous advantages that have significant consequences for the development of coir fiber in various fields.
The role of mechanical engineering in industry: Review and bibliometric analysis Al-Obaidi, Abdulkareem Sh. Mahdi; Husaeni, Dwi Fitria Al; Setiyo, Muji; Nandiyanto, Asep Bayu Dani
Mechanical Engineering for Society and Industry Vol 4 No 3 (2024): Special Issue on Technology Update 2024
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.12619

Abstract

Innovation has shown progress in many sectors, including mechanical engineering which is closely related to industry. Through a literature survey and bibliometric analysis of 1,920 articles sourced from the Scopus database from 2015 to 2024, this paper investigates the role that mechanical engineering plays in industrial progress. The analysis uses VOSviewer for network visualization, overlay, and density maps. According to the findings, mechanical engineering has significantly advanced several important areas, including advanced manufacturing processes, Industry 4.0 and digital transformation, sustainability and circular economy, educational advancement, use of new technologies, and biotechnology innovation. Some of the key findings of this review include the use of digital twins and integrating cyber-physical systems, the use of large-scale 3D printing technology, and the use of sustainable production methods in industry. According to the analysis, the number of publications and citations has increased, with a slight decrease during the COVID-19 pandemic. Visualizing this bibliometric map helps understand current trends, identify potential research areas, and highlight relationships between research issues.
A New Approach to Measuring Institutional and Researcher Contributions to the SDGs: Combining Data from Elsevier SciVal and VOSviewer Fungky Dyan Pertiwi; Dhimas Cahyo Anindito; Ilham Habibi; Saifudin; Suroto Munahar; Bagiyo Condro Purnomo; Yun Arifatul Fatimah; Budi Waluyo; Muji Setiyo
Advance Sustainable Science Engineering and Technology Vol. 6 No. 4 (2024): August-October
Publisher : Science and Technology Research Centre Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/asset.v6i4.1076

Abstract

The Sustainable Development Goals (SDGs), established by the United Nations in 2015, are a comprehensive global framework that addresses social, economic, and environmental challenges through sustainable development. This study examines the role of universities, specifically focusing on the Department of Mechanical Engineering at Universitas Muhammadiyah Magelang (UNIMMA), in contributing to the SDGs. The study utilized data from Elsevier’s SciVal to analyze the department’s contribution to the SDGs through scientific publications in the Scopus database. A total of 97 out of 156 articles published by nine researchers from the department were found to contribute to various SDGs, with a significant focus on Goals 7 (affordable and clean energy), 17 (partnerships for the goals), 9 (industry, innovation, and infrastructure), and 12 (responsible consumption and production). The study highlights the department’s collaborative efforts and alignment with global sustainability goals. In addition, VOSviewer was used to map the research collaboration network within the department, revealing strong contributions to energy efficiency, sustainable technologies, and climate action. However, the department's research shows limited contribution to social SDGs such as poverty alleviation and gender equality. By mapping the university’s contributions to the SDGs, this study helps faculty members identify opportunities for targeted research collaborations, address gaps in SDG contributions, and enhance partnerships with researchers from other institutions, thus broadening the university’s impact on global sustainable development goals.
Heat transfer and pressure characteristics of Tri Ethylene Glycol/water and Ethylene Glycol/water mixtures in copper pipe heated flow systems Sukarman, Sukarman; Khoirudin, Khoirudin; Amir, Amir; Fahrizin, Nazar; Azizah, Renata Lintang; Azizah, Azizah; Setiyo, Muji; Azmi, W. H.
SINERGI Vol 29, No 3 (2025)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2025.3.001

Abstract

Enhancing heat transfer efficiency and pressure regulation in copper pipe flow systems is crucial for advancing modern cooling and heating technologies, particularly given the widespread use of copper piping in these applications. This study investigates the thermal and hydraulic performance of ethylene glycol/water (EG/water) and tri ethylene glycol/water (TEG/water) mixtures as working fluids in copper pipe systems. A series of controlled experiments was carried out on a dedicated copper pipe test section to evaluate the effects of varying flow rates on the heat transfer coefficient and pressure drop for each fluid mixture. The results indicate that the TEG/water mixture yielded a ~2.0% increase in heat transfer coefficient and a ~1.0% reduction in pressure drop compared to the EG/water mixture, with a corresponding increase in Reynolds number of approximately 37.0%. The reduction in pressure drop is primarily attributed to the lower viscosity of the TEG/water fluid. These findings provide valuable comparative insights into the thermophysical behaviour of both glycol-based mixtures and offer practical guidance for optimizing the selection of thermal fluids in large-scale cooling and heating systems that utilize copper piping.
An encouragement to publish powerful studies on innovation in health: A journal preface Setiyo, Muji; Rahayu, Heni Setyowati Esti; Subrata, Sumarno Adi
Innovation in Health for Society Vol 1 No 1 (2021): January - June
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ihs.5316

Abstract

The health manifesto highlighted that studies on innovation flourish when all sides of the knowledge triangle (research, academia, and industry) work in tandem to enhance the quality of care. This opportunity should go much better than implementing theoretical and academic work in universities worldwide. Experts are developing health innovation in higher education to deal with this situation. Therefore, this preface from two experts in the field encourages the importance of publishing studies on innovation in health to reduce health problems and issues in healthcare services in clinical or community practice. Keywords: Innovation; healthcare system; quality of care; clinical practice; community care
Design, fabrication, and performance testing of an energy storage and return (ESAR) foot prosthesis made of prepreg carbon composite Rifky Ismail; Murti Ayu Nursafitri; Akmal Putra Fardinansyah; Deni Fajar Fitriyana; Athanasius Priharyoto Bayuseno; Januar Parlaungan Siregar; Muji Setiyo; Alfiana Fitri Istiqomah; Sulistyo Sulistyo
Mechanical Engineering for Society and Industry Vol 5 No 1 (2025)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.12652

Abstract

The high demand for prosthetics in Indonesia is not followed by the ability and quality of local production to fulfill the community's needs. There is a lack of comprehensive data regarding the specific challenges encountered by local prosthetic manufacturers in Indonesia, particularly in terms of technological limitations. This study aims to understand the effect of design parameters on the performance of the energy storage and return (ESAR) foot prosthesis prototype in normal walking activities for amputees. Three different designs were created according to commercial products, and a convergence test was conducted to ensure accurate results. Finite element method (FEM) analysis was used to determine the amount of deformation that occurred in each design made when applied with 824 N axial force. The ESAR foot prosthesis prototype made from carbon prepreg was fabricated using an out-of-autoclave method, and the mechanical testing was performed with a compressive test. The results indicated that the optimal design for the ESAR foot prosthesis determined by the decision matrix scoring criteria was Design 3. The final scores for Designs 1, 2, and 3 were 54, 53, and 77, respectively. Design 3 is the easiest to manufacture, has the slightest complexity, and the lightest mass, and undergoes the least deformation during simulation, although it is the least attractive. The study found a significant difference in displacement between the deflections obtained from simulation and experiment. This occurred because the prototype was found to have delamination, which decreased the load-bearing ability of the prototype during compressive testing. Compressive testing on the prototype yielded a deflection of 22.695 mm in heel strike and 18.065 mm in toe-off positions, while FEM analysis showed 16.377 mm and 3.912 mm. Therefore, strict quality control is essential, especially when using materials such as carbon prepreg, which are prone to delamination if not properly processed.
Co-Authors Abdul Wahid Jamin Abdulkareem Sh. Mahdi Al Obaidi Aditya Kolakoti Aditya Kolakoti Aditya Kolakoti Aditya Kolakoti Aditya Kolakoti Aditya Kolakoti Agung Setyo Pambudi Agus Setiawan Ahmad Irfan Akmal Putra Fardinansyah Al Husaeni, Dwi Fitria Al-Obaidi, Abdulkareem Sh. Mahdi Alfiana Fitri Istiqomah Alper Calam Ambati Vijay Kumar Amir Amir Andi Widiyanto Andrizal Andrizal Andy Efendi Anwar Anwar Anwar Anwar Arif Hidayat Asep Bayu Dani Nandiyanto Asnil Asnil Athanasius Priharyoto Bayuseno Azizah Azizah Azizah, Renata Lintang Azmi, W. H. Azuan Ahmad Bagas Arif Prasetyo Baginda Pangidoan Tanjung Bagiyo Condro P Bagiyo Condro Purnomo Bagiyo Condro Purnomo BAGYO CONDRO P Bambang Sudarmanta Battal DoÄŸan Bobbili Prasadarao Budi Waluyo Budi Waluyo Budi Waluyo Budiyanto Chrisna Bagus Edhita Praja Cionita, Tezara Damar Setyo Prakasa Darmawan Rois David Prayogo DerviÅŸ Erol Dhasa Ikrar Setyanansyach Dhasa Ikrar Setyanansyach Dhimas Cahyo Anindito Dori Yuvenda Dwi Ahmad R Dwi Ahmad Rizani Dwi Novia Al Husaeni Dwi Restianto Dwi Sudarno Putra Eko Muh Widodo Eko Muh Widodo Fahrizin, Nazar Fidelis Ibiang Abam Fitriyana, Deni Fajar Fungky Dyan Pertiwi Fungky Dyan Pertiwi Fungky Dyan Pertiwi Gaga Putra Setiawan Geeri, Satish Gozali, Muchamad Gunawan Refiadi Hadi, Agung Efriyo Hary Abdul Hakim Hasan Köten Hedi Purnomo Helen Riupassa Hendry Y. Nanlohy Heni Lutfiyati, Heni Heni Setyowati Esti Rahayu Husaeni, Dwi Novia Al Ilham Habibi Ilham Habibi Ilham Habibi, Ilham Imran, Al Ichlas Indra Candra Setiawan Indra Chandra Setiawan Jamaludin Jamaludin Jamiluddin, Jamiluddin Januar Parlaungan Siregar Jin Cherng Shyu Junid, Ramli Karmiadji, Djoko Wahyu Katakam Satyanarayana Khoirudin Khoirudin, Khoirudin Khoirul Fa’i Kivevele, Thomas Kolakoti, Aditya Krismadinata Krismadinata Kusumadewi, Tri Vicca Laksono Trisnantoro Lalank Samudra Mukti Hidayat Leo Utoro Lilik Budiyarto Luki Fahmi Luthfi, Akbar Lutifyati, Heni Macmanus Chinenye Ndukwu Madihah Mohd Saudi Marcin Noga Margana Margana Marliyati Marliyati Martias Martias Mat Rejab, Mohd. Ruzaimi Mehmet Akçay Metta Raghu Moehamad Aman Moehamad Aman Mohamad Agus Ramly Mohamad Heerwan Bin Peeie Muchamad Gozali Muhamad Latifur Rochman Muhammad Imron Rosyidi Muhammad Iqbal Al-Fikri Muhammad Kunta Biddinika Muhammad Latifur Rochman Muhammad Luthfi Muhammad Mauludin Kharim Muhammad Rizal I Muhammad Rizal Ibrahim Murti Ayu Nursafitri Mycel A. Capilayan Nanang Apriandi Nanda Ferdiansyah Nasmi Herlina Sari Nor Azwadi Che Sidik Noto Widodo Noto Widodo Noto Widodo Oki Muraza Oktavi Barkah Lukmana Oliver Ibor Inah Olusegun David Samuel Olusegun David Samuel Onyishi Donatus Uchechukwu Pirouzfar, Vahid Prasasti Bayu Aji Pramono Prasetyo, Bagas Arif Prima Nofan Ryastama Purnomo, Hedi Purnomo, Tuessi Ari Purwanto, Wawan Putra, Randi Purnama Ragadhita, Risti Raghu Metta Ragil Widyorini Rahadian Zainul Rahmat Desman Koto Rahmawan, Muhammad Andi Raja, Thirunavukkarasu Ramli Junid Ray Adhan Brieghtera Refaldy Pristiwantoro Remon Lapisa Remy Uche Retno Rusdjijati Rifky Ismail Rifky Ismail Rifky Ismail Rifqi Nugroho Riyan Adhy Pratama Riyan Tri Aditya Pamungkas Rizani, Dwi Ahmad Rochman, Muhamad Latifur Roni Muhammad Susanto Rosyidi, Muhammad Imron Rozanna Dewi Rusdjijati, Retno Saifudin Saifudin Saifudin Saifudin Salih Özer Sathish Dhandapani Selcuk Sarikoc Septiantar Tebe Nursaputro Setyo Widiantoro Siregar, Januar Parlaungan Sofyan Kurniawan Sri Rizki Putri Primandari Sukarman Sukarman Sulistyo Sulistyo Sumarno Adi Subrata Sunaryo Sunaryo Sunaryo Suroto Munahar Susanto, Roni Muhammad Suyitno Suyitno Thirunavukkarasu Raja Thirunavukkarasu Raja Thirunavukkarasu Raja Thomas Kivevele Tuessi Ari Purnomo Vahid Pirouzfar Veeramanikandan Murugan Volodymyr Tymofiiv Wagino Wagino Wahyu Danu Romadlon Wahyu Sulistiyo Widha Bagus Fahriansyah Yun Arifatul Fatimah Yusuf Dewantoro Herlambang Zainal Arifin Zulfikar Bagus Pambuko