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Nozel : Jurnal Pendididikan Teknik Mesin
Published by Universitas Sebelas Maret
ISSN : -     EISSN : 2656713X     DOI : https://doi.org/10.20961/nozel
Core Subject :
NOZEL : Jurnal Pendidikan Teknik Mesin is a national forum for the publication and dissemination of original work which contributes to greater scientific understanding of the main disciplines underpinning the mechanical engineering and vocational education. This international journal is dedicated to the latest advancements in mechanical engineering and vocational education. The goal of this journal is to provide a platform for scientists and academicians all over the world to promote, share, and discuss various new issues and developments in different areas of mechanical engineering and vocational education. This journal is published in the online journal, which publishes research articles, reviews, and letters in all areas of mechanical engineering and vocational education. It is a blind peer-reviewed journal, aims to provide the most complete and reliable source of information on current developments in the field. The emphasis will be on publishing quality papers rapidly and available to researchers worldwide.
Arjuna Subject : -
Articles 227 Documents
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Evaluasi Pengembangan Green Skills dalam Pendidikan Kejuruan di Indonesia: Tinjauan Literatur Irba' Rizka Putri; Waras Dwi Yoga; Tiara Kusuma Dewi; Danar Susilo Wijayanto; Sri Sumarni
Nozel : Jurnal Pendididikan Teknik Mesin Vol 9, No 1 (2027)
Publisher : Fakultas Keguruan dan Ilmu Pendidikan Universitas Sebelas Maret Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/nozel.v9i1.123594

Abstract

The transition to a green economy requires vocational education to produce graduates who possess not only technical skills but also sustainability competencies, or ‘green skills’. This study aims to evaluate the development of green skills in vocational education in Indonesia, identify barriers to their implementation, and analyze the effectiveness of green skills learning on students’ competencies. The research employed a literature review using a narrative-integrative approach, involving thematic analysis and synthesis of academic articles, policy documents, and other relevant literature. The findings indicate that the implementation of green skills in vocational education in Indonesia has begun to develop, but has not yet been systematically integrated into the curriculum, teaching, and assessment. The main obstacles include teachers’ limited understanding, the lack of explicit integration of green skills into the curriculum, the lack of contextual relevance in teaching strategies, an evaluation system that is not yet authentic, and a weak link to the needs of the green industry. Furthermore, project-based learning, problem-based learning, Project Citizen, and real-world practical experience have demonstrated their potential to effectively enhance pupils’ technical, problem-solving, and communication skills, as well as their environmental responsibility and employability. The findings of this study confirm that the development of green skills requires policy support, capacity building for teachers, innovation in teaching and learning, and closer collaboration between vocational education and the industry to support the transition towards sustainable development. 
PENGEMBANGAN MODUL MATA KULIAH PRAKTIK LAS DAN TEMPA LANJUT DI PROGRAM STUDI PENDIDIKAN TEKNIK MESIN FKIP UNIVERSITAS SEBELAS MARET SURAKARTA Rahman Sidik Pamungkas; Suharno Suharno; Husin Bugis
Nozel : Jurnal Pendididikan Teknik Mesin Vol 1, No 3 (2019)
Publisher : Fakultas Keguruan dan Ilmu Pendidikan Universitas Sebelas Maret Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/nozel.v2i3.42451

Abstract

The purpose of this research is to increase the independence and effectiveness in learning, to develop learning modules in the course welding practice and further metal handiwork in Mechanical Engineering Education Program of Teacher Traning and Education Science Faculty of Sebelas Maret University Surakarta. This research is Research and Development. The research has conducted with several stages, starting from the potential and problems, data collection, product design, design validation, design revisions, the initial product, product revision and final product. Subjects were expert assessment of the product, namely instructional media lecturer, welding practice and further metal handiwork lecturer, and students. The type of data used is qualitative data. Data collection techniques using instruments in the form of sheets of interviews and questionnaires. Analysis of data using questionnaire analysis and feasibility analysis of advanced welding modules. Based on the research results, the feasibility of advanced welding module in the first phase of matter experts obtained 81.61% and from 77.78% obtained by media experts, with the criteria very well. Assessment on the second phase of matter experts gained 87.5% and 88.194% earned media expert with the criteria very well. Questionnaire responses percentage of students obtained an average score of 83.27% with the criteria very well. Thus, advanced welding module on manufacture of swing educational materials viable for use in learning.
PENGARUH PENGGUNAAN TIPE ELEKTROLISER DAN JENIS LARUTAN PADA HYDROGEN ECO BOOSTER TERHADAP EMISI GAS BUANG SEPEDA MOTOR 4 TAK Abdul ‘Aziz Manggala Saputra; Ranto Ranto; Basori Basori
Nozel : Jurnal Pendididikan Teknik Mesin Vol 1, No 1 (2019)
Publisher : Fakultas Keguruan dan Ilmu Pendidikan Universitas Sebelas Maret Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/nozel.v1i1.28480

Abstract

The purpose of this research are: (1) Investigate the influence of the type of electrolyzer on Hydrogen Eco Booster towards the level of exhaust emissions (CO and HC) 4 stroke motorcycle. (2) Investigate the influence of the kind of solvent on Hydrogen Eco Booster towards the level of exhaust emissions (CO and HC) 4 stroke motorcycle. (3) Investigate the influence of the type of electrolyzer and the kind of solvent on Hydrogen Eco Booster towards the level of exhaust emissions (CO and HC) 4 stroke motorcycle. This research was conducted at the Automotive Laboratory of Mechanical Engineering Education, Teacher Training and Education Faculty Sebelas Maret University of Surakarta used a Honda Supra X 125 motorcycle, year of manufacture 2013. This study is an experimental research. The method of collecting data used in the research is measurement method. The data obtained from the test results were analyzed using Two-Way Anova Test and followed by One-Sample T Test and Scheffe Test. The results of this research are: (1) There is a significance effect on the type of electrolyzer on Hydrogen Eco Booster towards to decrease the level of exhaust emissions (CO and HC) 4 stroke motorcycle, (Sig-value of CO gas=0.001 < α=0.05) and (Sig-value of HC gas=0.000 < α=0.05). (2) There is a significance effect on the kind of solvent on the Hydrogen Eco Booster towards to decrease the level of exhaust emissions (CO and HC) 4 stroke motorcycle, (Sig-value of CO gas=0.000 < α=0.05) and (Sig-value of HC gas=0.000 < α=0.05). (3) There is a significance effect interaction between the type of electrolyzer and the kind of solvent on the Hydrogen Eco Booster towards to decrease the level of exhaust emissions (CO and HC) 4 stroke motorcycle, (Sig-value of CO gas=0.000 < α=0.05) and (Sig-value of HC gas=0.000 < α=0.05). The lowest CO gas obtained on the Wet Cell type using the kind of solvent KOH with a decrease of 84.41%. The lowest HC gas obtained on the Dry Cell type using the kind of solvent NaOH with a decrease of 69.62%.
PENGARUH PENAMBAHAN SILIKON (Si) TERHADAP SIFAT MEKANIK BAHAN GAMELAN PADUAN PERUNGGU TIMAH PUTIH (CuSn) DENGAN VARIASI KOMPOSISI Khotim Mahfud; Budi Harjanto; Nyenyep Sri Wardani
Nozel : Jurnal Pendididikan Teknik Mesin Vol 2, No 1 (2020)
Publisher : Fakultas Keguruan dan Ilmu Pendidikan Universitas Sebelas Maret Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/nozel.v1i3.50754

Abstract

This research has an objective to describe : (1) the effect of silicon addition to tin bronze alloy at an elastic properties; (2) the effect of silicon addition to tin bronze alloy at an impact power; (3) the effect of silicon addition to tin bronze alloy at a micro structure level. The research uses an experimental method with descriptive data analysis. The research sample is the result of tin bronze alloy plus silicon. The independent variables of this research are variations in the addition of silicon 1.5%, 3%, and 4.5%. The dependent variable of this research is tin bronze alloy. The results of this research indicate that the increased elastic properties are influenced by the addition of silicon which is known from the calculation of elastic modulus that the highest is 4.5% silicon variation has increased by 21.218% from tin bronze alloy. Broken toughness through the biggest impact test on the addition of 4.5% silicon has an impact value increase of 53.793%. The addition of silicon has an effect on the mechanical properties of the alloy where the elastic properties and impact strength have increased. The resulting microstructure explains that variations in the addition of silicon have an effect on the phase formed on the mechanical properties of the alloy. With the addition of silicon to tin bronze alloy can be recommended as a substitute for gamelan musical instruments.
STUDI EKSPERIMENTAL PERFORMANSI TURBIN SAVONIUS DENGAN PENAMBAHAN PANEL SURYA 100 WP POLYCRISTALLINE DI PESISIR PANTAI KABUPATEN DEMAK TERHADAP DAYA LISTRIK YANG DIHASILKAN Riza Ashari; Herman Saputro; Husin Bugis
Nozel : Jurnal Pendididikan Teknik Mesin Vol 2, No 4 (2020)
Publisher : Fakultas Keguruan dan Ilmu Pendidikan Universitas Sebelas Maret Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/nozel.v1i4.45216

Abstract

The use of fossil fuels in the form of petroleum, coal and natural gas in the long term as conventional power plants causes the scarcity of these fuels in the future. Then the use of new renewable energy such as wind and solar energy must be optimized. In Indonesia, both of these energies have the potential to be environmentally friendly power plants. Experimental research conducted on the coast of Demak Regency aims to determine the potential of wind and solar energy there and the use of both energy as pond lighting. The concept of a combination of solar panels and savonius turbines can produce complementary energy. During the day the battery charging is obtained from a combination of solar panels and savonius turbines while at night the Savonius turbine will still produce electricity. The S-type savonius turbine made from galvalum is mounted on a 6 m tall tower while the 100 WP solar panel is mounted beside it with a 90 slope. This penelitian use expermental methods. Data collection of wind speed, light intensity, electric current, and electric voltage is carried out periodically 20 minutes at 06.20 s.d. 17.20 Western Indonesian Time. Electrical power is obtained by multiplying curr Data analysis in this study uses quantitative descriptive analysisent and voltage. The combination produces enough electricity for lighting a pond in the village of Berahan Kulon, Kecamatan Wedung. The power generated from a combination of hybrid plants can reach 46,2 watts with the intensity of sunlight of 125000 luxmeter and constant wind speed around 2 to 4 m / s. From these results, a combination of turbine savonius and solar panels is more optimal compared to a stand-alone savonius turbine.
PROSES PEMBUATAN MESIN PENGEPRES SERBUK KAYU UNTUK MEDIA PEMBIBITAN JAMUR Dhani Aryanto
Nozel : Jurnal Pendididikan Teknik Mesin Vol 3, No 1 (2021)
Publisher : Fakultas Keguruan dan Ilmu Pendidikan Universitas Sebelas Maret Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/nozel.v3i1.52823

Abstract

Oyster mushroom cultivation business is very tempting. From a financial point of view, it can be said that this business is feasible to run. Especially for hobbyists or entrepreneurs, this business is quite fun and interesting. If we observe, the interest in this cultivation business continues to increase from year to year. Of course, there are many factors that are the reason for the increasing interest in this business, ranging from just a hobby, the mushroom factor as a healthy food or mushrooms as a future food. That means this business will continue to grow for a long time.From the above, it can be concluded that the development of a business cannot be separated from the existence of appropriate technology. So it takes a pressing machine to compact the planting media in the form of a mixture of sawdust. In a site survey to a place for making consumption mushroom growing media. The pressing process is still manual, but there is also a machine. Pressing with the machine is still at risk of pinching the hand so that it can slow down the production process. Therefore, the risk of making this pressing machine is minimized and the automatic production process can run smoothly so that more results are obtained. The machine works up and down by using the clutch lever, pressing the sawdust with a specified density level, namely the initial height of 230 mm to 190 mm. Keywords: Pressing Machine, Mushroom
Analisis Kelayakan Ekonomi Implementasi Energi Surya pada Bangunan Pendidikan: Sebuah Systematic Literature Review Ella Aprilliyah
Nozel : Jurnal Pendididikan Teknik Mesin Vol 9, No 1 (2027)
Publisher : Fakultas Keguruan dan Ilmu Pendidikan Universitas Sebelas Maret Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/nozel.v1i1.122973

Abstract

This study aims to analyze the economic feasibility of implementing solar energy in educational buildings through a Systematic Literature Review (SLR). Data were obtained from scientific articles in the Scopus, ScienceDirect, Web of Science, and Google Scholar databases, using inclusion criteria covering the years 2015–2026 and focusing on solar power plants in educational buildings as well as economic indicators such as NPV, IRR, PP, and LCOE.The results indicate that the implementation of solar power systems in educational buildings is generally economically viable. This is evidenced by positive NPV values, IRR rates above the minimum viability threshold, and a Payback Period ranging from 6 to 16 years—which falls within the system’s economic lifespan. Key factors influencing viability include initial investment costs, electricity tariffs, solar radiation intensity, system efficiency, and government policies.In conclusion, solar power plants have great potential for application in the education sector as a solution for energy efficiency, operational cost savings, and support for sustainable energy.
Analisis Tekno-Ekonomi Pengaruh Suhu Curing terhadap Performa Mekanik Komposit Sandwich Carbon Fiber/PVC Foam: Tinjauan Sistematis dan Perspektif Efisiensi Biaya Arya Syahputra
Nozel : Jurnal Pendididikan Teknik Mesin Vol 8, No 4 (2026)
Publisher : Fakultas Keguruan dan Ilmu Pendidikan Universitas Sebelas Maret Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/nozel.v8i4.121205

Abstract

Abstract This study presents a Systematic Literature Review (SLR) that integrates techno-economic analysis of curing temperature variations on the mechanical properties and failure behavior of carbon fiber sandwich composites with polyvinyl chloride (PVC) foam cores. The systematic review was conducted using the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) protocol with structured searches across the Scopus, Web of Science, and Google Scholar databases, using keyword combinations: "curing temperature," "carbon fiber sandwich composite," "PVC foam," "mechanical properties," and "techno-economic analysis." Of 147 identified articles, 19 studies met the inclusion criteria and were analyzed in depth. Composite materials are widely applied in engineering applications due to their superior strength-to-weight ratio; however, manufacturing process parameters such as curing temperature critically influence both structural performance and production cost efficiency. The objective of this study is to synthesize the latest scientific evidence and determine the optimal curing temperature that maximizes mechanical performance while considering the associated energy consumption costs and economic implications of material failure prevention. Experimental validation was carried out using specimens fabricated via the vacuum bagging method, subjected to curing temperatures of 70°C, 80°C, and no curing (room temperature). Flexural testing was performed using the three-point bending method in accordance with ASTM C393 standards. The synthesis of systematic review findings and experimental validation demonstrates that curing at 80°C yields the highest flexural strength (48.35 MPa) and elastic modulus (67.03 GPa), representing a 60.8% improvement over uncured specimens. From an engineering economics perspective, the additional energy costs of curing at 80°C are substantially offset by reduced failure risk, lower maintenance costs, and an extended service life of the composite structure. These findings support the adoption of 80°C curing as the economically optimal manufacturing condition for carbon fiber/PVC foam sandwich composites. 
Analisis Kelayakan Tekno-Ekonomi Menggunakan Metode Net Present Value (NPV) dan Internal Rate Of Return (IRR) pada Konversi Mesin Diesel 1-Silinder ke Biodiesel B20 Berbasis Limbah Minyak Jelantah pada Industri Tahu Skala UMKM Rama Abimanyu
Nozel : Jurnal Pendididikan Teknik Mesin Vol 9, No 2 (2027)
Publisher : Fakultas Keguruan dan Ilmu Pendidikan Universitas Sebelas Maret Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/nozel.v9i2.123384

Abstract

The reliance of the MSME-scale tofu industry on diesel fuel for single-cylinder diesel engines results in high operating costs and increased exhaust emissions. B20 biodiesel made from used cooking oil is a fuel alternative with the potential to reduce production costs, minimize waste, and support the adoption of renewable energy. This study aims to analyze the techno-economic feasibility of using B20 biodiesel derived from used cooking oil in single-cylinder diesel engines through a Systematic Literature Review (SLR) approach, adhering to the PRISMA principles. The reviewed literature consists of scientific publications from 2019 to 2025 that discuss the performance of diesel engines fueled by B20 biodiesel, the utilization of used cooking oil as a biodiesel feedstock, and technical-economic analyses using Net Present Value (NPV) and Internal Rate of Return (IRR). The results of the study indicate that the use of B20 biodiesel leads to a 1–3% decrease in effective power, a 2–5% decrease in thermal efficiency, and a 5–10% increase in specific fuel consumption. Nevertheless, these changes remain within the operational tolerance limits of SMEs and do not require significant engine modifications. From an environmental perspective, B20 biodiesel reduces CO, HC, and particulate emissions, although there is a tendency for NOx emissions to increase. From an economic perspective, a positive NPV and an IRR of 12–25%, which exceeds the MARR of 9.5%, indicate that converting diesel engines to B20 biodiesel is financially viable. Thus, the use of B20 biodiesel made from used cooking oil can serve as an economical, practical, and sustainable alternative energy solution for the MSME-scale tofu industry.
DC-DC Converters For Hydrogen Fuel Cell Control: A Comprehensive Literature Review Mohd Shafie Bakar; Mohd Shawal Jadin; Mohd Herwan Sulaiman; Nugroho Agung Pambudi; Danar Susilo Wijayanto
Nozel : Jurnal Pendididikan Teknik Mesin Vol 8, No 4 (2026)
Publisher : Fakultas Keguruan dan Ilmu Pendidikan Universitas Sebelas Maret Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/nozel.v8i4.123020

Abstract

This paper presents a comprehensive literature review of recent advances in DC–DC converter technologies for hydrogen fuel cell power conditioning, with particular emphasis on proton exchange membrane fuel cells (PEMFCs) used in electric vehicle and stationary energy systems. Covering 29 peer-reviewed studies, the review examines progress in converter topologies, control methodologies, and performance optimization. The analysis highlights interleaved boost converters combined with advanced control strategies—such as linear quadratic regulator (LQR) control, fractional-order PID control, and sliding mode control—as the current state-of-the-art, achieving efficiencies above 95% while substantially reducing input current ripple and improving transient response. Emerging research trends include high-gain impedance-network converters enabling wide input voltage ranges, isolated and bidirectional converter architectures that support hybrid energy storage integration, and intelligent optimization-based control approaches incorporating particle swarm optimization (PSO) and model predictive control (MPC). The review further identifies key trade-offs in efficiency, power density, voltage gain capability, and dynamic behavior across converter designs, providing a structured foundation for future development of high-performance fuel cell power conditioning systems.

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