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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 158 Documents
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Pengaruh Penggunaan Variasi Jenis Busi Dan Variasi Bahan Bakar Terhadap Emisi Gas Buang HC, CO, CO2 Dan O2 Pada Sepeda Motor Honda Beat FI Tahun 2016 Maharbudi, Deno; Bugis, Husin; Ranto, Ranto
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.v3i1.63317

Abstract

The purpose of this research are (1) Knowing and obtaining the results of the investigation of the effect of variations in spark plug types on exhaust emissions of HC, CO, CO2 and O2 on Beat FI 2016 motorbikes (2) Knowing and obtaining the results of investigating the effect of variations in fuel on exhaust emissions HC, CO, CO2 and O2 on Beat FI 2016 motorbikes (3) Knowing and obtaining the results of the investigation of the effect of spark plug types and fuel variations on exhaust emissions of HC, CO, CO2 and O2 on Beat FI 2016 motorbikesThis research uses descriptive quantitative research with experimental research methods. Measurement of exhaust emissions in accordance with SNI 09-7118.3-2005. The population in this study was a Honda Beat FI motorcycle. The sample in this study was a Honda Beat FI motorbike in 2016. The data collection technique was using purposive sampling. The research was conducted at Dishubkominfo Surakarta city using the gaz analyzer technotest.Results of this research is (1) The use of a combination of pertalite fuels and iridium plugs generates the lowest HC rate of 118.67 ppm or a decrease of 32.58% (2) The use of pertalite fuel with platinum plugs decreases by producing the lowest CO rate of 0.487% or decrease 3.31% (3) pertamax fuel with standard plugs resulted in the lowest CO2 exhaust emission of 10.5% with a difference of 2.27 or decrease 17.75% (4) use of pertalite fuel with standard plugs capable of producing O2 exhaust gas emissions of 1.057% or the lowest.
PENGARUH PENGGUNAAN FERRITE BEAD DAN VARIASI JENIS BUSI TERHADAP EMISI GAS BUANG CO DAN HC PADA SEPEDA MOTOR YAMAHA SOUL GT TAHUN 2012 Arafadh, Reza Aji; Ranto, Ranto; Bugis, Husin
Nozel : Jurnal Pendididikan Teknik Mesin Vol 2, No 3 (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.v2i2.43249

Abstract

The purpose of this research was to determine: (1) The effect of Ferrite Bead on CO and HC exhaust gas emission on the Yamaha Soul GT 2012 motorcycles; (2) The effect of the use variations of the spark plugs type on CO and HC exhaust gas emission on the Yamaha Soul GT 2012 motorcycles; (3) The interaction of the effect of  Ferrite Bead and variations of spark plugs type on CO and HC exhaust gas emission on the Yamaha Soul GT 2012 motorcycles.This research a quantitative type using experimental methods. The data analysis technique descriptive analysis. The research was conducted at the Laboratory of the Surakarta City Transportation Office located at Jl. Menteri Supeno No.7, Manahan, Banjarsari, Surakarta. The tool for measuring CO and HC exhaust gases is the KOREA IYASAKA brand gas analyzer (TYPE AET-4000Q). The subject in this research was the  Yamaha Soul GT 2012 motorcycle. From the results of the research, it can be concluded: (1) The use of Ferrite Bead can reduce levels of CO and HC exhaust gas emission on Yamaha Soul GT 2012 motorcycle. The test results without the use of Ferrite Bead produced CO emission levels of 0.61% and HC of 122.67 ppm. Whereas in testing the use of Ferrite Bead near spark plugs obtained CO emission levels of 0.53% and HC of 101 ppm, and on testing the use of Ferrite Bead near the coil obtained CO emission levels of 0.60% and HC of 122.67 ppm; (2) The use of variations of the spark plugs type can reduce levels of CO and HC exhaust gas emission on Yamaha Soul GT 2012 motorcycle. The results of testing using Standard spark plugs (C7HSA) produce CO emission levels of 0.61% and HC of 122.67 ppm. While testing using Platinum spark plugs (CR7HGP) obtained CO emission levels of 0.59% and HC of 131.33 ppm, and testing using Iridium spark plugs (NGK CR6HIX) obtained CO emission levels of 0.60% and HC of 93.67 ppm; (3) Interaction of the use of Ferrite Bead and variations of the spark plugs type can reduce levels of CO and HC exhaust gas emission on Yamaha Soul GT 2012 motorcycle. Test results show the lowest levels of CO and HC exhaust gas emission, namely the use of Ferrite Bead near the spark plug and the use of Iridium spark plugs ( NGK CR6HIX) with the lowest exhaust gas emission results, namely 0.45% for CO and 80 ppm for HC.
Pengembangan E-Modul Konversi Minyak Jelantah menjadi Biodiesel pada Mata Kuliah Energi Baru dan Terbarukan Universitas Sebelas Maret Markana, Satria Hari; Wijayanto, Danar Susilo
Nozel : Jurnal Pendididikan Teknik Mesin Vol 8, No 3 (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.v8i3.119662

Abstract

Pemanfaatan minyak jelantah sebagai bahan baku biodiesel merupakan salah satu upaya untuk mengurangi pencemaran lingkungan sekaligus mendukung pengembangan energi baru dan terbarukan. Namun, pada mata kuliah Energi Baru dan Terbarukan (EBT) masih ditemukan keterbatasan perangkat pembelajaran yang mampu mengintegrasikan pembelajaran teori dan praktik berbasis proyek secara sistematis. Penelitian ini bertujuan untuk mengembangkan e-modul konversi minyak jelantah menjadi biodiesel berbasis Project-Based Learning (PjBL) serta mengetahui tingkat kelayakannya. Metode penelitian yang digunakan adalah Research and Development (R&D) dengan model pengembangan 4-D yang meliputi tahap define, design, development, dan disseminate. Subjek penelitian melibatkan dosen pengampu mata kuliah EBT sebagai ahli materi, dosen media pembelajaran sebagai ahli media, serta mahasiswa Program Studi Pendidikan Teknik Mesin FKIP Universitas Sebelas Maret angkatan 2022 sebagai pengguna dalam uji coba kelas kecil. Teknik pengumpulan data menggunakan kuesioner, sedangkan analisis data dilakukan secara deskriptif kuantitatif. Hasil penelitian menunjukkan bahwa e-modul yang dikembangkan memperoleh tingkat kelayakan sebesar 97,78% dari ahli materi, 84,44% dari ahli media, dan 89,73% dari respons pengguna, dengan kategori sangat layak. Dengan demikian, e-modul ini layak digunakan sebagai bahan ajar pendukung pada mata kuliah Energi Baru dan Terbarukan.Keywords: e-modul, Project-Based Learning, minyak jelantah, biodiesel, energi baru dan terbarukan.
STUDI EKSPERIMENTAL BERBAGAI JENIS PROSES PENGEROLAN TERHADAP OVALISASI PIPA BAJA BERDIAMETER KECIL Adnya, Zefania Mustika; Estriyanto, Yuyun; Towip, Towip
Nozel : Jurnal Pendididikan Teknik Mesin Vol 5, No 3 (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.v5i3.77352

Abstract

Pipa baja digunakan secara luas di dalam industri, dan proses pengerolan manual merupakan salah satu metode yang umum digunakan untuk memproduksi dan membentuk pipa-pipa tersebut sesuai pemintaan. Namun, proses pengerolan meyebabkan pipa baja terdeformasi atau disebut dengan ovalisasi. Ovalisasi pipa selama proses pengerolan manual dapat menyebabkan penurunan kekuatan struktural dan kualitas pipa. Penelitian ini bertujuan untuk menguji pengaruh pengisian pasir, hot rolling, dan kombinasi pasir dan hot rolling terhadap ovalisasi pipa baja berdiameter kecil pada proses pengerolan manual. Penelitian dilakukan menggunakan metode eksperimental, dengan empat perlakuan: pengerolan standar,  pengerolan dengan pengisian pasir, pegerolan dengan hot rolling, dan pengerolan dengan kombinasi pengisian pasir dan hot rolling. Pada tahap persiapan spesimen dilakukan pengukuran ketebalan dan panjang pipa baja hingga menghasilkan 8 spesimen uji. Kemudian, pipa-pipa tersebut diisi dengan pasir pada bagian dalamnya sesuai dengan variasi yang ditentukan. Pada tahap pengukuran, diameter spesimen setelah proses pengerolan diukur dengan akurasi menggunakan jangka sorong. Hasil pengukuran nilai ovalisasi tertinggi sebesar 0,36% terjadi pada proses pengerolan standar dengan ketebalan pipa baja 2mm. Sedangkan, nilai ovalisasi pipa baja terendah sebesar 0,05% terjadi pada proses pengerolan dengan pengisian pasir dan hot rolling. Analisis data menggunakan metode analsis deskriptif. Hasil penelitian ditemukan bahwa terdapat perbedaan nilai ovalisasi pada 4 jenis proses sehingga menghasilkan metode terbaik yaitu pengerolan dengan pengisian pasir dan hot rolling.Kata Kunci : Pipa baja, Ovalisasi, proses pengerolan
Studi Penelitian Panjang Kritis Serat Alam Dengan Perlakuan Perendaman Natrium Hidroksida Ramadhan, Rangga Yanuarestu; Estriyanto, Yuyun; Harjanto, Budi
Nozel : Jurnal Pendididikan Teknik Mesin Vol 3, No 4 (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.v3i4.63009

Abstract

The purpose of this study was to determine the critical length of palm fiber, kenaf fiber, pineapple fiber, agave fiber, and coconut fiber with NaOH immersion treatment. This study was determine the effect of NaOH immersion treatment on the critical length of fiber. This research is an experimental exploratory research. The independent variables in this study were palm fiber, kenaf fiber, pineapple fiber, agave fiber, and coconut fiber with the dependent variable is the critical fiber length. To find the critical length of fiber using single fiber tensile test and single fiber pull out test. The data obtainde from the test results are then analyzed using formula equation to determine the critical length of each fiber. Data analysis techniques using quantitative descriptive analysis techniques. The results showed that the critical length of palm fiber, kenaf fiber, agave fiber, and coconut fiber with NaOH immersion treatment was shorter than the critical length of fiber without NaOH immersion treatment. Agave fiber has the shortest critical fiber length. The critical length of the fiber with NaOH immersion treatment are palm fiber 4.6 mm, kenaf fiber 5.4 mm, pineapple fiber 3.6 mm, agave fiber 2.2 mm, and coconut fiber 3.0 mm. 
ANALISIS PERFORMANSI SOLAR TRACKER SISTEM BERBASIS LOGIKA FUZZY SEBAGAI OPTIMALISASI DAYA YANG DIHASILKAN PANEL SURYA Ulum, Muhammad Bahrul; Widiastuti, Indah; Wijayanto, Danar Susilo; Bakar, Mohd Shafie
Nozel : Jurnal Pendididikan Teknik Mesin Vol 7, No 2 (2025)
Publisher : Fakultas Keguruan dan Ilmu Pendidikan Universitas Sebelas Maret Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/nozel.v7i2.82441

Abstract

Energi surya, sebagai salah satu sumber energi alternatif utama yang jumlahnya melimpah dan dampak lingkungan yang minimal, memegang peranan penting dalam penyediaan energi listrik di dunia. Panel surya akan menghasilkan daya listrik yang maksimal bila intensitas radiasi matahari yang diterima juga maksimal. Untuk itu panel surya harus dikontrol agar posisinya selalu tegak lurus terhadap Matahari. Dengan melihat permasalahan tersebut maka diperlukan solar tracking agar posisi panel surya bergerak tegak lurus dengan posisi Matahari. Penelitian ini bertujuan untuk mengetahui perbandingan daya yang dihasilkan panel surya menggunakan sistem solar tracking dan sistem tetap. Penelitian ini menggunakan metode eksperimen berupa penelitian langsung pada panel surya. Pada penelitian ini solar tracking menggunakan mikrokontroler berbasis logika fuzzy yang memanfaatkan sensor cahaya untuk memerintahkan motor listrik bergerak mengikuti posisi Matahari secara otomatis. Sedangkan pada sistem tetap, posisi panel surya berada pada sudut paling optimal yaitu 24°. Penelitian dilakukan dengan mengukur arus listrik dan tegangan listrik yang dihasilkan kedua panel surya. Dari hasil pengukuran tersebut diperoleh besaran daya listrik yang dihasilkan oleh panel surya. Hasil penelitian menunjukkan bahwa solar tracker berbasis logika fuzzy menghasilkan rata-rata daya keluaran harian yang lebih baik dibandingkan dengan sistem tetap yaitu 7,86 W. Penggunaan logika fuzzy membantu mikrokontroler dalam memberikan inferensi terbaik mengenai arah putaran matahari. panel agar selalu tegak lurus dengan arah datangnya radiasi matahari.
ANALISIS KESIAPAN DAN MINAT MAHASISWA DALAM PROGRAM MERDEKA BELAJAR KAMPUS MERDEKA: STUDI KASUS MAHASISWA JPTK FKIP UNS ANGKATAN 2020 Pamungkas, Mukhlis Dwiaji; Harjanto, Budi; Towip, Towip
Nozel : Jurnal Pendididikan Teknik Mesin Vol 4, No 2 (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.v4i2.72237

Abstract

It is necessary to increase soft skills and hard skills so that university graduates are ready to work and face challenges in the world of work. Competencies are needed that are integrated with other majors so that university graduates can adapt to the world of work. So that students must be prepared to have readiness and interest in learning in the era of global competition. The Independent Learning Campus Merdeka Program (Program Merdeka Belajar Kampus Merdeka atua MBKM) is expected to be able to answer this challenge. The method used in this research is descriptive statistics. With the aim of testing the hypothesis that there is readiness, interest, and major indicators that affect the readiness and interest of JPTK FKIP UNS students batch 2020 in carrying out the Independent Learning Campus Merdeka program. The conclusion of this study is that there is readiness of JPTK FKIP UNS students batch 2020 in the MBKM program, there is interest from JPTK FKIP UNS students batch 2020 in the MBKM program, there are large indicator values that affect the readiness and interest of JPTK FKIP UNS students batch 2020 in implementing the MBKM program, namely indicators Emotions of Pleasure and Psychic Conditions Affective Attitudes.
PENGARUH KADAR INHIBITOR EKSTRAK KULIT BUAH RAMBUTAN DAN KONSENTRASI LARUTAN HCL TERHADAP LAJU KOROSI BAJA ST 37 bukhori, muhammad salafudin; Ranto, Ranto; Widiastuti, Indah
Nozel : Jurnal Pendididikan Teknik Mesin Vol 1, No 4 (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.v2i4.42469

Abstract

Industrial manufacture of steel with pickling process method uses HCl solution as a cleaner. Besides as a cleaner, HCl solution can also causes a corrosion on steel product from pickling process. That corrosion can be controlled by corrosion inhibitor from organic material. Organic material consist of tannin compound that can react by forming a complex compound on the steel surface and protect it from corrosion attack. Organic material in this research is rambutan peel extract used as inhibitor corrosion with the values of 0.5%, 1.0%, 1.5%, and 2.0% in HCl solution with the values of 0.1 N, 0.5 N, and 1.0 N. St 37 steel is used as test sample in this research. The aims of this research are to investigate the effect of amount of rambutan peel extract and concentration of HCl solution toward the corrosion rate of St 37 steel. Weight loss method is used to calculate the corrosion rate and Two Way Anova is used as data analysis technique. The result of this research shows that there is an effect of the amount of rambutan peel extract as an inhibitor and concentration of HCl solution toward the corrosion rate of St 37 steel. Corrosion rate has the lowest value in the variation of 2.0% inhibitor and 0.1 N HCl with the highest efficiency value as 63.13%.
PENGEMBANGAN E-MODUL PRAKTIKUM KELISTRIKAN OTOMOTIF BERBASIS SELF DIRECTED LEARNING PADA PROGRAM STUDI PENDIDIKAN TEKNIK MESIN UNS Pangestu, Agrippina Gian; Ranto, Ranto; Rohman, Ngatou
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.v6i2.83964

Abstract

Technology has created numerous benefits in various aspects of life, including education. Teachers and students should integrate technology into their learning plans to ensure effective teaching and learning. The use of technology in education can inspire students to pursue new interests and motivate them to engage in learning activities that enhance their perspectives. The role of an instructor in a student's education is crucial. Self-directed learning (SDL) is an instructional process that requires students to identify their own learning needs, provide resources, and practice learning techniques. By using the right methods and situations in teaching, students can develop their own skills and enhance their learning experience. This study aims to improve the effectiveness of e-module practical on the otomotif kelistrikan in the Mesin Technical Education program.The study on the development of an e-module for otomological pedagogy found that the validity of the e-module met good results with validity scores of 84.4% (very feasible) for material, 85% (very feasible) for media, 75% (feasible) for language, and 83,3% very (feasible) for data from student responses. Critics and respondents also deemed that improvements are needed for the e-module. The results were based on feedback from the committee of otomologists who provided some suggestions about the electronic pedagogical pedagogy module in terms of quality and safety, indicating that improvements are still needed for this module. The e-module will be distributed through the Mesin Technical Education Program at the University of Surakarta.Keywords: development, e-modules, self directed learning
PENGEMBANGAN MEDIA PEMBELAJARAN E-PUBLICATION MODUL TEKNIK SEPEDA MOTOR MAHASISWA PENDIDIKAN TEKNIK MESIN FKIP UNIVERSITAS SEBELAS MARET Sasongko, Wisnu Dimas; Widiastuti, Indah; Harjanto, Budi
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.v1i2.32996

Abstract

Mobile learning has become a great tool for delivering educational resources in which learners can not only access the module anytime and anywhere, but also can actively interact with the learning material. This research aims to design and develop learning material of an automotive engineering course based on mobile device for mechanical engineering education students. The development e-publication module of motorcycle mechanic course employed the ADDIE instructional design model encompassing five steps: analysis, design, development, implementation, and evaluation. The student’s learning style was identified to characterize mobile module target. It was found that majority of the students as user have auditory and kinesthetic, then the module will be designed with the design in accordance with auditory and kinesthetic learning style, therefore the module will be mainly designed on audio-based format. The learning module developed using e-publication software consisting of structured documents combined with audio and video files. Some experts were asked to evaluate the implementation feasibility of the module. The average evaluation score was 85.4%, indicating high acceptance of implementing the learning module. It implies that e-publication module delivery has the potential to gain wider acceptance in engineering education complementing the in-class and practical learning.

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