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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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Penggalian Data Bengkel Untuk Basis Data Awal Aplikasi Mybengkel Menggunakan Location Based Service Riswantoro Ikhwan H; Nugroho Agung Pambudi; Yuyun Estriyanto
Nozel : Jurnal Pendididikan Teknik Mesin Vol 4, No 1 (2022)
Publisher : Fakultas Keguruan dan Ilmu Pendidikan Universitas Sebelas Maret Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/nozel.v1i1.63589

Abstract

Abstract: Motorcyclists and cars have difficulty finding a repair shop when it breaks down on the road, because of the lack of information on the location of the workshop around. In the end, it raises the need for vehicle users to find out information about the workshop and the location of the workshop. The purpose of this study is to present data on the operational characteristics of the workshop. This study uses a quantitative survey method. Collecting data in this study using a questionnaire with a resource person, namely the owner of the workshop. The research instrument was compiled in the form of a questionnaire that had been tested for instrument validity by experts. The results of the questionnaire data obtained from the respondents were then tabulated using Microsoft Excel into a bar chart. This study took a sample of 70 workshops in Solo Raya. The results of this study indicate that the average operating hours of workshops in Solo Raya are at 08.00 WIB. The average closing hours for workshop operations in Solo Raya is 16.00 WIB. The types of workshops are divided into 2, namely general workshops there are 62 workshops while specialist workshops have 8 workshops. The average type of workshop work that can serve consumers is light service. There are 43 mechanics who can be called out of the workshop, while 27 workshops cannot be called out. The average number of mechanics for motorcycle and car repair shops in Solo Raya is 1 and 2 mechanics. The average estimated cost of a light motorcycle service is Rp. 30,500, the average estimated service cost for motorbikes is Rp. 136,500, the average estimated cost of a light car service is Rp. 175,500, the average estimated service cost for the weight of the car is Rp. 1,987,500, the average estimated cost of motorcycle tires is Rp. 10,200, the average estimated cost of washing a motorbike is Rp. 22,500, the average estimated cost of body repair is Rp. 300,000, the average estimated cost of repairing the dynamo is Rp. 550.000, the average estimated cost of car AC service is Rp. 125,000, the average estimated cost of repairing a car radiator is Rp. 300,000, the average estimated cost of car carburetor service is Rp. 187,500, and the estimated average cost of a chassis specialist is Rp. 375,000.
UPAYA PENINGATAN KEAKTIFAN BELAJAR MAHASISWA PADA PERKULIAHAN MOTOR BAKAR MAHASISWA PRODI PTM FKIM UNS MELALUI PENERAPAN MODEL PEMBELAJARAN PROBLEM BASED LEARNING Agal Dani Argo; Ranto Ranto; Towip Towip
Nozel : Jurnal Pendididikan Teknik Mesin Vol 6, No 1 (2024)
Publisher : Fakultas Keguruan dan Ilmu Pendidikan Universitas Sebelas Maret Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/nozel.v6i1.79280

Abstract

This research aims to determine the application of the Problem Based Learning (PBL) learning model in an effort to improve student learning activity in the 2022 2th Semester  Student Internal Combustion Motor course, Mechanical Engineering Education Study Program, Faculty of Teacher Training and Education, Sebelas Maret University, Surakarta.This research is a classroom action research (CAR) model by Kemmis and Mc. Taggart with 3 cycles that focuses on action in an effort to increase student learning activities in the Fuel Motor course. Data collection techniques using the observation method. Furthermore, the research subjects were students of the Class A Combustion Motorcycle Lecture Semester 2 of the 2023 Mechanical Engineering Education Study Program with a total of 42 Class A Combustion Motorcycle Lecture students. The analysis used in this research is a qualitative descriptive analysis technique. Based on the research results, by implementing the Problem Based Learning (PBL) learning model, student learning activity improved. And to find out the results of improving student learning activities, students Based on research, it shows that student activity and learning outcomes in the Fuel Motor course in class A PTM FKIP UNS are relatively low. Based on data obtained at the pre-cycle stage, the percentage of all indicators was 38.44%, cycle 1 the percentage of all indicators was 68.06% and cycle 2 the percentage of all indicators was 78.04%. And cycle 3 the percentage of all indicators is 82.06%.This research produces the following conclusions. The results of the analysis and discussion of the research based on research observation, the following conclusions can be drawn: The application of the Problem Based Learning (PBL) learning model can improve student learning activity in the PTM FKIP UNS Internal Combustion Motor course 2th Semester 2023
Tren dan Research Gap Life Cycle Cost Analysis pada Teknologi Energi Terbarukan: Systematic Literature Review Andika Dwi Putra
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.v1i1.122463

Abstract

This study aims to identify research trends and research gaps in the application of Life Cycle Cost Analysis (LCCA) in renewable energy technologies. A Systematic Literature Review (SLR) approach was employed using the PRISMA framework. The literature was collected from Scopus, ScienceDirect, IEEE Xplore, and Google Scholar databases with a publication range of 2015–2025. Approximately 350 articles were identified and filtered through several stages, resulting in 30–40 final articles for analysis. The findings indicate that solar photovoltaic systems dominate LCCA studies, followed by wind, biomass, and hybrid systems. Bibliometric analysis using VOSviewer reveals three main clusters: sustainability and literature review, management and sustainable development, and technical energy systems such as biomass and hydrogen. The results also show a shift in recent studies toward digitalization, artificial intelligence, and digital twin integration. However, inconsistencies in methodological approaches and limited studies in developing countries remain significant research gaps. This study provides a structured overview of LCCA development and identifies future research directions.
ANALISIS KUALITAS LAYANAN AKADEMIK PROGRAM STUDI PENDIDIKAN TEKNIK MESIN UNS DENGAN METODE SERVQUAL DAN QFD (QUALITY FUNCTION DEPLOYMENT) Kostiyah Dewi Arini; Budi Harjanto; Indah Widiastuti
Nozel : Jurnal Pendididikan Teknik Mesin Vol 4, No 4 (2022)
Publisher : Fakultas Keguruan dan Ilmu Pendidikan Universitas Sebelas Maret Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/nozel.v4i4.72273

Abstract

This study aims to (1) analyze the gap between students' perceptions and expectations of the academic services of the Mechanical Engineering Education Study Program, (2) analyze the attributes of academic services that are priorities, and (3) identify improvement efforts that need to be prioritized in order to improve the quality of academic services at Mechanical Engineering Education Study Program. This research is quantitative descriptive. Sources of data in this study is primary data obtained directly from students through questionnaires, and interviews as supporting data. The sampling technique is done by probability sampling. Data collection was done by questionnaire and supported by interviews. The validity test technique used is the Pearson product moment correlation. Data analysis using ServQual and QFD methods. The results of this study are as follows. First, the gap between students' perceptions and expectations of academic services for the Mechanical Engineering Education Study Program obtained a negative servqual score with a total servQual score of -0.45. This means that the quality of services provided by the Study Program has not been able to meet student expectations. Second, service attributes that have the highest normalization and need to be prioritized to be improved according to the needs and expectations of students of the Mechanical Engineering Education Study Program are attributes X3, X11, X10, X32 and X33. Third, improvement efforts that need to be prioritized to improve service quality are based on a range of ratings from 1-10 on technical responses, namely, with the highest score of first rank of 0.05069 found in four technical responses on TR1, TR2, TR3, TR4, TR15, TR16, TR11, TR12, TR13, TR14, TR19, TR20, TR21. The Study Program continues to develop and improve the performance of the academic service quality attributes that are considered important by students and affect student satisfaction.
PIROLISIS CAMPURAN BIOMASSA LIMBAH AMPAS KOPI DAN LIMBAH PLASTIK POLYPROPYLENE Lutfi Ilunsa Zain; Danar Susilo Wijayanto; Taufik Wisnu Saputra
Nozel : Jurnal Pendididikan Teknik Mesin Vol 5, No 1 (2023)
Publisher : Fakultas Keguruan dan Ilmu Pendidikan Universitas Sebelas Maret Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/nozel.v5i1.72286

Abstract

The need for energy progressively increase, meanwhile fossil fuel reserves gradually decrease since it is nonrenewable resourses. Coffee grounds and polypropylene plastic waste can be used as alternative fuels. One of the ways to use coffee grounds and plastic waste as fuel is through the pyrolysis process. Pyrolysis is a chemical decomposition process of a material thermally in the absence of oxygen which converts RDF-4 into a liquid smoke product in the form of oil. The purpose of this study was to determine the effect of the comparison of the composition of the mixture of coffee grounds and polypropylene plastic waste on the quantity of pyrolysis oil. This study uses an experimental method with quantitative descriptive analysis techniques. This research was carried out by means of a pyrolysis process on RDF-4 a mixture of coffee grounds biomass waste and polypropylene plastic waste with various composition ratios of 0%:100%, 25%:75%, 50%:50%, 75%:25%, and 100%:0%. The pyrolysis oil is then filtered, for later testing the quantity. The test shows that there is an effect of variations in the ratio of the composition of the biomass mixture to the quantity of pyrolysis oil. RDF-4 from coffee grounds waste mixed with polypropyelene plastic waste produces a quantity that tends to decrease as the ratio of coffee grounds composition decreases. RDF-4 which is not mixed with coffee grounds or has a composition ratio of coffee grounds less than the composition ratio of polypropylene plastic waste produces pyrolysis oil with more quantity and quality that tends to be better than the ratio of other RDF-4 compositions. The quantity of pyrolysis oil produced ranged from 219.33 ml to. 1026.67 ml. RDF-4 from 100% polypropylene plastic waste produces pyrolysis oil with the highest quantity of 1026.67 ml with the highest pyrolysis temperature achieved 391°C at T1, 345.5 °C at T2, and 367.75 °C at T3.
Pengaruh Penggunaan Elektroliser Tipe Wet Cell Dengan Variasi Larutan Elektrolit Terhadap Daya Dan Torsi Sepeda Motor JUPITER MX Tahun 2010 Ertonson Timothy Loblobly; Husin Bugis; Ranto Ranto
Nozel : Jurnal Pendididikan Teknik Mesin Vol 3, No 2 (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.v3i2.63329

Abstract

The objectives of this study were to investigate the effect of using Wet Cell type electrolyzer on the power and torque of Jupiter MX motorcycles in 2010. To investigate the effect of variations in electrolyte solutions on the use of Wet Cell type electrolyzers on the power and torque of Jupiter MX motorcycles in 2010.This research was conducted at the Automotive Laboratory for Mechanical Engineering Education, Faculty of Teacher Training and Education, Sebelas Maret University, Surakarta and at PT. Motocourse Technology (MOTOTECH) Yogyakarta. This research is a descriptive quantitative research. The research design used was experimental design. The research sample used a Jupiter MX motorbike in 2010. This experimental tool used a Wet Cell type electrolyzer using a variety of pure water, KOH and NaOH electrolyte solutions. The data collection method used in this research is the experimental method.The results of this study are the use of the Wet Cell type electrolyzer has an effect on the power and torque of the Jupiter MX motorcycle in 2010, namely an increase in power of 0.97 HP and an increase in torque of 1.88 N.m compared to testing standard engine conditions. The use of 24 gram / liter KOH solution in the Wet Cell type electrolyzer has the highest increase in power and torque levels compared to other variations in the ratio of solutions. There was an increase in power of 0.39 HP and an increase in torque of 0.3 N.m compared to the power and torque of using a Wet Cell type electrolyzer with water as an electrolyte solution without a catalyst and 1.36 HP and 2.18 N.m compared to the power and torque of the standard state. The use of 24 gram / liter NaOH solution has the lowest rate of increase, there is an increase in power of 1.33 HP and 1.84N.m compared to the power and torque of the standard state.
Pengembangan E-Modul Turbin Angin (Savonius Heliks) dengan Model 4-D Pada Mata Kuliah Energi Terbarukan di Prodi Pendidikan Teknik Mesin Universitas Sebelas Maret Surakarta Topan Yuli Susilo; Ranto Ranto; Ngatou Rohman
Nozel : Jurnal Pendididikan Teknik Mesin Vol 5, No 4 (2023)
Publisher : Fakultas Keguruan dan Ilmu Pendidikan Universitas Sebelas Maret Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/nozel.v5i4.77361

Abstract

Renewable energy technologies are currently being developed, one of which is wind turbines. There are two types of wind turbines, namely the vertical axis and the horizontal axis. One of the horizontal wind turbines is the helical savonius. The development of this technology can help the development of renewable energy. The Mechanical Engineering Education study program is testing wind turbines to help students understand wind turbine technology. Through this research a practicum module will be created to assist students in carrying out wind turbine practicum.This electronic module validates the material and media. The results of the material validation stated the suitability of the material in accordance with the material on wind turbines that had been taught in wind turbine courses. The results of the media validation state that the design is attractive and easy to read so that students can understand the electronic module.
Kajian Techno-Economic Assessment Teknologi Waste Heat Recovery pada Industri Manufaktur: Systematic Literature Review Menggunakan Protokol Prisma 2020 Ramadhan 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.v8i4.120963

Abstract

Sektor manufaktur merupakan salah satu konsumen energi terbesar di dunia, menyumbang sekitar 37% dari total permintaan energi akhir, dengan sebagian besar terbuang sebagai limbah panas yang tidak dimanfaatkan melalui gas buang, aliran pendingin, dan radiasi permukaan. Pemanfaatan kembali energi panas ini melalui teknologi pemulihan panas limbah (WHR) menawarkan strategi yang terbukti secara teknis dan layak secara ekonomi untuk meningkatkan efisiensi energi industri sekaligus mengurangi biaya operasional dan emisi gas rumah kaca. Namun, studi yang ada sebagian besar mengevaluasi teknologi individual dalam konteks sektor tertentu, tanpa perspektif perbandingan lintas teknologi dan lintas sektor yang komprehensif yang didasarkan pada kerangka kerja tekno-ekonomi terintegrasi. Studi ini mengatasi kesenjangan tersebut dengan melakukan Tinjauan Literatur Sistematis (SLR) mengikuti protokol PRISMA 2020, mensintesis sekitar 60 artikel yang ditinjau sejawat yang diambil dari empat basis data elektronik utama — Scopus, Web of Science, Google Scholar, dan IEEE Xplore — yang mencakup periode 2014 hingga 2024. Empat teknologi WHR dominan diperiksa: penukar panas (HE), Siklus Rankine Organik (ORC), generator termoelektrik (TEG), dan sistem pendingin absorpsi (ARS), di seluruh sub-sektor manufaktur utama termasuk semen, baja, petrokimia, otomotif, dan pengolahan makanan. Hasil menunjukkan bahwa ORC adalah teknologi yang paling banyak dipelajari untuk penilaian tekno-ekonomi, menunjukkan efisiensi termal 10–25% dengan periode pengembalian investasi 3–6 tahun untuk sumber panas suhu menengah hingga rendah (80–400°C). Penukar panas tetap menjadi teknologi yang paling banyak digunakan karena efisiensi pemulihan termal yang tinggi (60–90%) dan kompleksitas sistem yang rendah. Lima kesenjangan penelitian kritis telah diidentifikasi: dominasi studi dari negara-negara maju dengan parameter ekonomi yang tidak dapat ditransfer; cakupan yang tidak memadai terhadap sumber panas suhu rendah di bawah 150°C; tidak adanya analisis sensitivitas dinamis untuk fluktuasi harga energi dan skenario penetapan harga karbon; kelangkaan studi perbandingan multi-teknologi terintegrasi; dan kurangnya kerangka pelaporan TEA yang terstandarisasi dan dapat direplikasi. Temuan ini memiliki implikasi langsung bagi industri manufaktur Indonesia, di mana pengeluaran modal yang tinggi dan akses pembiayaan yang terbatas di kalangan usaha kecil dan menengah tetap menjadi hambatan paling signifikan terhadap adopsi WHR. Tinjauan ini menyediakan peta pengetahuan terstruktur untuk memandu para peneliti, insinyur, dan pembuat kebijakan dalam mengembangkan strategi efisiensi energi industri berbasis bukti.
PENGARUH VARIASI SUDUT WINGLET DAN SUDUT PITCH TERHADAP CUT IN SPEED PADA TURBIN ANGIN POROS HORIZONTAL Dzakwan Murtadlo Mukti Mukti; Danar Susilo Wijayanto; Taufik Wisnu Saputra
Nozel : Jurnal Pendididikan Teknik Mesin Vol 4, No 3 (2022)
Publisher : Fakultas Keguruan dan Ilmu Pendidikan Universitas Sebelas Maret Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/nozel.v4i3.72240

Abstract

Horizontal axis wind turbine is to convert mechanical energy in the wind and next change to electrical energy from generator. In this study done using Horizontal axis wind turbine type NACA 4412 for determine winglet angle variation on the end of blade and used, with winglet angle variation 150, 300, 450, 600 with the addition of pitch angle 100, 120, 140, 160, 180 and five blade. The purpose of this study is to find out how much influence the variation in winglet angle and pitch angle on the cut in speed produced by horizontal wind turbines. The method used in this study is to use the experimental method. samples used in this study using the NACA 4412 Horizontal wind turbine.The best cut in speed obtained in this study was obtained by the variation in winglet angle 15, where the cut in speed values obtained against the variation in pitch angle were 100 (0.91 m/s), 120 (0.77 m/s), 140 (0.77 m/s), 160 (0.71 m/s), and 180 (0.73 m/s) and and pitch angle variation 18, where the cut in speed values obtained against winglet angle variations are 600 (0.82 m/s), 450 (0.84 m/s), 300 (0.8 m/s), and 150 (0.73 m/s).
HUBUNGAN FLEKSIBILITAS KOGNITIF DAN EFIKASI DIRI DENGAN KOMPETENSI KEWIRAUSAHAAN MAHASISWA CALON GURU PENDIDIKAN TEKNIK FKIP UNS Sri Handayani; Muhammad Akhyar; Indah Widiastuti
Nozel : Jurnal Pendididikan Teknik Mesin Vol 6, No 2 (2024)
Publisher : Fakultas Keguruan dan Ilmu Pendidikan Universitas Sebelas Maret Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/nozel.v6i2.64033

Abstract

This study aims to determine whether there is a relationship between cognitive flexibility and self-efficacy with the entrepreneurial competence of prospective teacher students, namely a case study of Vocational Engineering Education students. This research was conducted using a quantitative approach, cognitive flexibility and self-efficacy as independent variables, entrepreneurial competence as the dependent variable. The population in this study were active students of the Sebelas Maret University majoring Vocational Engineering Education class 2018-2021. The total population is 921 students who consist of 315 students of Mechanical Engineering Education Study Program, Building Engineering Education as many as 297 students, and Information and Computer Engineering Education as many as 309 students. The researcher used the Stratified Random Sampling method in determining the sample size. The technique used to collect data using a Likert scale instrument. During the data collection process, the Sub-competences of Entrepreneurial Competency and Underlying Behavioral Indicators were used to measure the entrepreneurial competencies of prospective teacher students, Cognitive Flexibility Inventory (CFI) to measure the level of cognitive flexibility, and the General Self-Efficacy Scale (GSE) to measure the level of self-efficacy. The analytical method used is multiple linear regression analysis. The results of this study indicate that there is a positive relationship between cognitive flexibility and self-efficacy with entrepreneurial competence (R=.736, R2=.542, p=.000). Therefore, it can be said that the entrepreneurial competence of prospective teacher students can be improved through cognitive flexibility and self-efficacy beliefs.

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