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Jurnal Pendidikan Teknik Mesin Undiksha
Published by Universitas Pendidikan Ganesha
ISSN : 26141876     EISSN : 26141884     DOI : http://dx.doi.org/10.23887/jjtm.v7i1.18616
Core Subject : Education, Engineering,
Automotive Engineering Education Engineering Industrial & Manufacturing Engineering Mechanical Engineering
Jurnal Pendidikan Teknik Mesin, adalah jurnal ilmiah yang diterbitkan oleh Jurusan Pendidikan Teknik Mesin, Fakultas Teknik dan Kejuruan, Universitas Pendidikan Ganesha. Jurnal ini bertujuan untuk mewadahi artikel-artikel hasil penelitian dan hasil pengabdian masyarakat dibidang pendidikan dan pembelajaran teknik. Pada akhirnya Jurnal ini dapat memberikan deskripsi tentang perkembangan ilmu pengetahuan dan teknologi di bidang pendidikan teknik mesin bagi masyarakat akademik. Jurnal ini terbit 3 kali setahun.
Arjuna Subject : Umum - Umum
Articles 27 Documents
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Search results for , issue "vol. 14 no. 2 (2026)" : 27 Documents clear
Analisis Tingkat Kelulusan Welder Qualification Test Berdasarkan AWS D1.1/D1.1M:2020: Analysis of Pass Rates for the Welder Qualification Test Based on AWS D1.1/D1.1M:2020 Adhe Aryswan; Rio Rahmad Guntur; Ari Wibowo; Nurman Pamungkas
Jurnal Pendidikan Teknik Mesin Undiksha Vol. 14 No. 2 (2026)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jptm.v14i2.76264

Abstract

The welder qualification process is pivotal to ensuring quality welding in fabrication industries. This study presents the outcomes of a welder qualification test conducted from February 16 to 17, 2023, involving 151 participants across seven batches. Utilizing the AWS D1.1/D1.1M:2020 standard, participants underwent visual inspection to assess welding proficiency. Results revealed that 141 welders successfully met qualification criteria, while 10 encountered failures primarily due to fast travel speeds and high ampere settings leading to visible defects. The qualification process showcased a 90% success rate on the first day and 100% success on the second day. Grades A, B, and C were employed to assess visual inspection outcomes, with most participants achieving grades A and B. Overall, the study emphasizes the importance of meticulous adherence to welding parameters and procedures to ensure successful qualification outcomes. Addressing identified areas of improvement, particularly regarding welding parameters, is crucial for enhancing the effectiveness of future qualification processes and nurturing a skilled workforce in alignment with industry standards.
Analisis Pengaruh Berat Loler Sliding Terhadap Torsi, Daya Dan Kosumsi Bahan Bakar Pada Motor Metic CVT: Sliding Roller Weight Variations on Torque, Power, and Consumption of CVT Motorcycles Kadek Ari Setiawan; Ni Made Novia Kusumayani; Nyoman Arya Wigraha
Jurnal Pendidikan Teknik Mesin Undiksha Vol. 14 No. 2 (2026)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jptm.v14i2.102514

Abstract

This study aims to analyze the effect of sliding roller weight variations on torque, power output, and fuel consumption in automatic motorcycles equipped with a CVT (Continuously Variable Transmission) system. The research object is a 2013 Honda Vario 110cc FI motorcycle. The rollers used include a standard cylindrical roller weighing 13 grams, and sliding rollers with weights of 10 grams, 12 grams, and 15 grams, respectively. The research method employed is experimental, with data collected through dynotest measurements for torque and power, as well as fuel consumption testing within an engine speed range of 3000 – 7000 rpm, with data recorded at five specific points: 3000 rpm, 4000 rpm, 5000 rpm, 6000 rpm, and 7000 rpm. The results indicate that variations in sliding roller weight affect engine torque and power. In general, all sliding roller variations tested produced higher torque and power compared to the standard roller. Torque testing revealed that increasing the weight of the sliding roller tends to enhance torque at lower engine speeds. The 15-gram sliding roller produced the highest average torque of 20.28 N.m at 3000 rpm, while the 10-gram and 12-gram rollers produced average torque values of 19.82 N.m and 19.81 N.m, respectively. Power testing showed that lighter sliding rollers tend to generate greater power at medium engine speeds. The 10-gram roller yielded the highest average power output of 9.08 HP at 5000 rpm, followed by the 12-gram (8.94 HP) and 15-gram (7.96 HP) rollers. Meanwhile, fuel consumption testing showed that all roller variations exhibited nearly identical consumption patterns at each engine speed, with an average difference of less than 0.015%. Keywords: CVT, sliding roller, torque, power output, fuel consumption, automatic motorcycle
Deskripsi Konsep Diri Mahasiswa Pendidikan Teknik Otomotif Terhadap Profesi Guru : Description of the self-Concept of Automotive Engineering Education Students Toward the Teaching Profession Andhika Rafli Syafikri; Fardhan Azhar; Wahid Munawar
Jurnal Pendidikan Teknik Mesin Undiksha Vol. 14 No. 2 (2026)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jptm.v14i2.114673

Abstract

This study aims to describe the self-concept of student in the Automotive Engineering Education program at Universitas Pendidikan Indonesia toward the teaching profession. The method used is a descriptive quantitative approach involving 32 respondents selected through convenience sampling. Data were collected using a Likert-scale questionnaire. The result indicate that the aspect of students’ perceptions of the teaching profession achieved the highest percentage at 78.58% (good category), followed by perceived teaching ability at 64.26% and self-confidence at 63.61%, while interest in the teaching profession showed the lowest percentage at 51.74% (fair category). Overall, the students’ self-concept toward the teaching profession has not yet been fully and comprehensively developed
Pengaruh Variasi Kuat Arus Listrik Terhadap Kekuatan Tarik Hasil Pengelasan Tungsten Inert Gas (TIG) Pada Material Aluminium 5052: 1. PENDAHULUAN, 2. METODE, 3. HASIL DAN PEMBAHASAN, 4. KESIMPULAN DAN SARAN, UCAPAN TERIMAKASIH, DAFTAR RUJUKAN Abdi Ciputra; Ni Made Novia Kusumayani; Edi Elisa
Jurnal Pendidikan Teknik Mesin Undiksha Vol. 14 No. 2 (2026)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jptm.v14i2.115053

Abstract

Technological advances in the field of welding continue to develop, especially in the Tungsten Inert Gas (TIG) method which is widely used to join metals such as Aluminum 5052. This study was conducted to examine the effect of differences in electric current on the mechanical properties of welding results, including tensile strength, strain, and modulus of elasticity, using ER4043 electrodes and CO₂ shielding gas and ASTM E8 standard specimens. The approach used was a quantitative experiment with variations in current of 90A, 100A, 110A, and 120A, then tested using a tensile testing machine and analyzed through data presentation in the form of tables and graphs. The test results showed that a current of 100A provided the highest tensile strength value of 79.242 MPa, while a current of 120A produced the largest strain of 0,0174 which indicates a more ductile material. Meanwhile, the highest modulus of elasticity value was obtained at a current of 100A of 20,614 GPa which indicates the best level of material stiffness. In general, current variations significantly affect the mechanical characteristics of the weld, with currents that are too low resulting in less than optimal penetration, while currents that are too high can potentially cause overheating and weld defects. Therefore, determining the appropriate current is a crucial factor in achieving optimal weld joint quality.
Pengembngan Pengembangan Aplikasi Pembelajaran Interaktif Sistem Pengisian Berbasis Android: Development of Android-Based Interactive Learning Application for Charging Systems Yeremia; Muhammad Hudan Rahmat; Supriyadi; I Made Supatra
Jurnal Pendidikan Teknik Mesin Undiksha Vol. 14 No. 2 (2026)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jptm.v14i2.114198

Abstract

This study aims to develop an interactive learning application based on Android on the topic of the charging system with the support of the Godot game engine for vocational high school students. The research method used is Research and Development with the ADDIE model (Analysis, Design, Development, Implementation, Evaluation), conducted at SMK Negeri 1 Palangka Raya. The research instruments consisted of expert validation questionnaires and practicality tests for students and teachers. The validation results showed that the application falls into the category of highly feasible to use, with an average score of 4.00 from material experts and 4.35 from media experts. The practicality test through student responses in the small-scale trial obtained an average score of 3.72, and in the large-scale trial 3.88, both categorized as very good. In addition, teacher responses to the application obtained an average score of 4.10, categorized as practical. Thus, the interactive Android-based charging system learning application developed using the Godot game engine is declared feasible and practical to be used as a teaching medium to improve students’ understanding of automotive electrical systems.
Pengembangan Media Pmbelajaran Interaktif Berbasis Augmented Reality pada Sistem Instalasi Tata Udara: Development of Augmented Reality-Based Interactive Learning Media in Air Conditioning Installation Systems Gede Arya Palguna; I Gede Wiratmaja; Edy Agus Juny Artha
Jurnal Pendidikan Teknik Mesin Undiksha Vol. 14 No. 2 (2026)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jptm.v14i2.114201

Abstract

The lack of Augmented Reality (AR) learning media for the air conditioning installation system course at SMK Negeri 3 Singaraja has made it difficult for students to understand how the system works. This study aims to develop Augmented Reality (AR)-based learning media using the ADDIE development model to analyze the feasibility of the prototype from the perspectives of learning media experts and subject matter experts. Data collection methods used questionnaires, and the data was analyzed using percentage calculations. The results of the data analysis indicate that this learning medium is highly feasible based on the assessment by subject matter experts with a percentage of 94.28%, as well as from the product feasibility test conducted by learning media experts, yielding a product feasibility percentage of 85.71%. Based on these results, this learning media can be implemented as a supplement in the classroom learning process.  
Pengaruh Model Pembelajaran Kooperatif Type PJBL Terhadap Hasil Belajar System Tata Udara Teknik Elektronika Siswa Kelas XI TE Di SMK N 3 Singaraja: The Influence of Project-Based Learning Model on Learning Outcomes of Air Conditioning Systems in Electronic Engineering Department at State Vocational School 3 Singaraja Kadek Karuna Wibawa; Edi Elisa; I Nyoman Pasek Nugraha
Jurnal Pendidikan Teknik Mesin Undiksha Vol. 14 No. 2 (2026)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jptm.v14i2.115089

Abstract

The low learning outcomes of students in the Air Conditioning System course indicate the need for an instructional model that can enhance student engagement and improve the quality of the learning process. Project-Based Learning (PjBL) is an instructional model that is well suited to vocational education because it integrates conceptual understanding with practical experience through project completion. This study aimed to analyze the effect of implementing Project-Based Learning on the learning outcomes of eleventh-grade students in the Electronics Engineering Program at SMK Negeri 3 Singaraja. This study employed a quantitative approach using a pre-experimental method with a one-group pretest–posttest design. The study population consisted of 58 students, while the research sample comprised 29 eleventh-grade Electronics Engineering students. Data were collected using a multiple-choice objective test that had been validated through content validity assessment. The data were analyzed using descriptive statistics, normality and homogeneity tests, N-Gain analysis, and a paired-samples t-test with the assistance of SPSS software. The results showed that the mean learning outcome increased from 72.55 on the pretest to 82.00 on the posttest. The average N-Gain score was 0.7501, which falls into the high category, while the paired-samples t-test yielded a significance value of 0.001 (p < 0.05). These findings indicate that the implementation of Project-Based Learning has a positive and significant effect on students' learning outcomes in the Air Conditioning System course. Therefore, Project-Based Learning can be considered an effective instructional model for improving the quality of teaching and learning as well as students' competency achievement in technical and vocational education.
Analisis Laju Keausan Kampas Rem Campuran Arang Sabut Kelapa Dan Kulit Pisang: Wear Rate Analysis Of Coconut Coir And Banana Peel Charcoal Brake Pads Satria Yoga Ramadhani; Ratna Monasari; Akbar Anugrah
Jurnal Pendidikan Teknik Mesin Undiksha Vol. 14 No. 2 (2026)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jptm.v14i2.115099

Abstract

The effect of the combination of coconut coir charcoal and banana peel charcoal on the wear rate of motorcycle brake pads as an eco-friendly, non-asbestos material is evaluated. The biocomposite brake pads were fabricated using 200-mesh coconut coir and banana peel charcoal fillers with a volume fraction variation of 0–50%, compounded with Fe powder, CaCO₃, and polyester resin as the binding matrix. Wear testing was conducted using a disc brake simulator at a speed of 1800 rpm, a braking pressure of 10 psi, and a test duration of 120 seconds for each specimen. The wear rate was calculated based on the mass difference before and after testing relative to the contact surface area and test duration. The results indicate that an increase in coconut coir charcoal content consistently reduces the wear rate, whereas a higher composition of banana peel charcoal causes faster pad wear. The specimen containing 50% coconut coir charcoal, recording a value of 0.000865 g/mm.sec, provided the best wear resistance among all biocomposite variations, while the original equipment manufacturer (OEM) brake pads maintained the lowest wear value as the reference standard. These findings confirm the potential of coconut coir charcoal as the primary reinforcement for polyester resin-based brake pad composites.
Keefektifan Media Video Animasi Canva Terhadap Peningkatan Hasil Belajar Dasar Gambar Teknik Siswa SMK: Effectiveness of Canva‑Based Animated Video Media in Improving Vocational High School Students’ Learning Outcomes in Basic Technical Drawing Dani Saputra; Shohihatur Rohman
Jurnal Pendidikan Teknik Mesin Undiksha Vol. 14 No. 2 (2026)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jptm.v14i2.115637

Abstract

This study aims to determine whether Canva animated video media is effective in improving learning outcomes in basic technical drawing for 10th-grade Automotive Technology students at SMK Muhammadiyah 2 Semarang. The background underlying this study is students’ low understanding of technical drawing material and a learning process that is still dominated by lecture-based methods without the use of learning media. This study employs a quantitative approach using a quasi-experimental design with a one-group pretest-posttest design. The sample consists of 29 students from Class X TO 4. Data collection utilized a multiple-choice test that had been validated for both validity and reliability. The validity test results showed that 22 items were valid while 3 items were invalid; the Cronbach’s Alpha result was 0.893, indicating that the instrument was highly reliable. The research results showed an increase in the students’ average score from 70.34 initially to 84.7 on the post-test. Furthermore, the normality test results showed that the data were normally distributed, with significance values of 0.503 for the pre-test and 0.088 for the post-test. Additionally, the paired-sample t-test yielded a significance value of <0.001, indicating a significant difference between the pre-test and post-test results. Thus, the Canva-based animated video medium was proven effective in improving learning outcomes for the subject matter
Variasi Diameter Intake Manifold dan Throttle Body terhadap Performa Mesin 155 CC: Variation of Intake Manifold and Throttle Body Diameter on 155 CC Engine Performance I Putu Wahyu Widi Astika; Ida Bagus Putu Purwadnyana; Kadek Rihendra Dantes
Jurnal Pendidikan Teknik Mesin Undiksha Vol. 14 No. 2 (2026)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jptm.v14i2.115798

Abstract

This study aimed to analyze the effect of intake manifold and throttle body diameter variations on engine performance and fuel consumption of a 2019 Yamaha NMAX 155 cc motorcycle using Pertamax 98 fuel. The diameter variations tested consisted of the standard 28 mm, a modified 30 mm, and a modified 32 mm. A quantitative experimental method was employed, with torque and power measured using a dynamometer, while fuel consumption was determined using the volumetric method. Testing was conducted within an engine speed range of 3,000–6,000 rpm. The results showed that variations in intake manifold and throttle body diameters significantly affected engine performance and fuel consumption characteristics. The 32 mm diameter produced the highest performance, achieving a maximum torque of 21.88 Nm at 3,500 rpm and a maximum power output of 11.5 HP at 4,500 rpm. However, this configuration also resulted in the highest fuel consumption, reaching 0.661 kg/h at 6,000 rpm. Meanwhile, the 30 mm diameter provided a balanced improvement in performance while maintaining relatively good fuel efficiency. The use of Pertamax 98 supported a more optimal combustion process and helped reduce engine knocking.

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