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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 16 Documents
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Search results for , issue "Vol. 13 No. 2 (2025)" : 16 Documents clear
Proses Produksi Mobil Taksi Baru dan Mobil Taksi Bekas Menjadi Kendaraan Pribadi: Production Process of New and Used Taxi Cars to Become Personal Vehicles Andhika, Rizki; Nindhia, Tjokorda Gde Tirta
Jurnal Pendidikan Teknik Mesin Undiksha Vol. 13 No. 2 (2025)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jptm.v13i2.84065

Abstract

Taxis are one of the modes of public transportation that are often found in big cities. This study will discuss the production process of new taxis and used taxis until they become cars that are ready to be used as private vehicles by the general public. New taxis will be produced according to taxi standards set by the relevant company. Meanwhile, used taxis are cars that have been operating for 5 years as taxis, then restored to become private vehicles. The production process of new taxis includes various steps from planning to quality control, which aims to ensure that the taxis produced have high quality and a luxurious appearance. Meanwhile, the production process of used taxis requires detailed and thorough checking and processes from the time the car arrives at the production site until production is completed. Through these two processes, in-depth insights are obtained on how to maintain the performance and quality of cars, both new and used, so that they are always optimal.
Pengaruh Parameter Pada Mesin CNC Laser Cutting Terhadap Kualitas Hasil Pemotongan Pada Material Sheet Metal di PT. XYZ: The Influence of CNC Laser Cutting Machine Parameters on the Cutting Quality of Sheet Metal at PT. XYZ Mochammad Rajib El Atros; Kardiman; Boni Sena; Fauzan Hibatullah; Mohadly Satya Permadi
Jurnal Pendidikan Teknik Mesin Undiksha Vol. 13 No. 2 (2025)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jptm.v13i2.92721

Abstract

The advancement of the manufacturing industry demands the use of precise, efficient, and highly competitive cutting technology, one of which is CNC Laser Cutting. This study aims to analyze the influence of cutting parameters, such as cutting speed, laser power, focus distance (focusline), nozzle distance, and gas pressure, on the cutting quality of sheet metal made of SUS 304 and Aluminum. The research method includes direct experiments at PT. XYZ with variations in CNC laser machine parameters to evaluate surface roughness, dimensional accuracy, and edge quality of the cut. The results indicate that a higher cutting speed and optimal laser focus improve precision and cutting cleanliness. Nitrogen gas is more effective for cutting SUS 304 and Aluminum compared to other gases. The proper selection of the nozzle also plays a role in maintaining gas flow stability and preventing cutting defects. Additionally, the interaction between cutting speed and laser power significantly impacts the final result. The study concludes that an optimal combination of parameters produces cleaner, more precise, and more efficient cuts, thereby enhancing quality and productivity in the sheet metal industry. Therefore, selecting the appropriate parameters is crucial to achieving the best cutting results and minimizing production defects.
Simulasi Rangka Gudang Terhadap Pembebanan Hoist Crane Double Grider 2 Ton Divisi GSCM PT. Xx: Warehouse Frame Simulation Against Double Grider 2 Ton Hoist Crane Loading GSCM Division PT. Xx Muhammad Edgar Gazanata; Rudiat; Rifky Irfani
Jurnal Pendidikan Teknik Mesin Undiksha Vol. 13 No. 2 (2025)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jptm.v13i2.92901

Abstract

This study aims to analyze the permissible deflection limits of the warehouse frame structure in the GSCM Division of PT. Xx The analysis was carried out using Autodesk Inventor Professional 2024 to simulate the effect of a 2-ton double girder lifting crane load on a steel structure made of ASTM A36 material. Observations, measurements, literature studies, and interviews were conducted to collect the necessary data. The simulation results showed that the maximum deflection of the building structure was 1.71 mm, exceeding the permissible deflection of 0.599 mm according to SNI 1729:2015. Likewise, the maximum deflection of the lifting crane girder reached 65.68 mm, exceeding the permissible limit of 36.78 mm. These findings indicate that the warehouse frame structure in its current condition does not meet the safety standards for the installation of hoist cranes. The deflection that occurs risks reducing structural stability and causing operational failure. Therefore, additional reinforcement and modification of the frame design are needed to be able to support the crane load optimally and safely. The results of this study are expected to be a reference in developing industrial warehouse structure designs that are more efficient and in accordance with safety standards.
Evaluasi Mesin Furnace Chikka Menggunakan Metode Failure Mode Analysis (Fmea) Pt. Xx : Evaluation Of Chikka Furnace Machine Using Failure Mode Analysis (Fmea) Method Pt. Xx Yuda Purwalaksana; Kardiman; Deni Hidayat; Stefanus Aldy Kurniawan; Rio Julianto Sukarman
Jurnal Pendidikan Teknik Mesin Undiksha Vol. 13 No. 2 (2025)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jptm.v13i2.93291

Abstract

The Furnace Chikka machine at PT. Xx plays a crucial role in the company’s production and operations. As one of the main tools used in material processing, this machine must function optimally to maintain production flow. However, over time, various potential failures can occur in the furnace system, which can affect its performance and efficiency. Therefore, an analysis is conducted to identify the risks that may arise and propose appropriate solutions. The method used in this study is Failure Mode and Effect Analysis (FMEA), aimed at identifying potential failure modes in the furnace machine, assessing their impact, and calculating the level of risk that could arise. Data collection is carried out through field observations, discussions with technicians, and literature review. The risk assessment utilizes three main parameters: Severity, Occurrence, and Detection, which are calculated to determine the Risk Priority Number (RPN). The results of this study provide recommendations for maintenance and early detection to minimize further damage.
Analisis Karakteristik Serat Pandan Bali dan Sabut Kelapa dengan Perlakuan NaOH sebagai Penguat Polyester Komposit: Analysis of Bali Pandan Fiber and Coconut Fiber Characteristics with NaOH Treatment as a Polyester Composite Reinforcer Ida Ayu Putu Indah Komala Dewi; IK Suarsana; IGP Agus Suryawan; Kadek Rihendra Dantes; I Putu Lokantara; I Made Astika; I G N Nitya Santhiarsa
Jurnal Pendidikan Teknik Mesin Undiksha Vol. 13 No. 2 (2025)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jptm.v13i2.94002

Abstract

The development of composite materials has become a major focus of research in recent decades, especially natural fiber composites with a unique combination of physical and mechanical properties of materials. Polyester composites can be produced by utilizing synthetic and natural fibers. The natural fibers studied are the characteristics of Balinese pandan fiber and coconut fiber with NaOH solution treatment for polyester composite reinforcement. The treatment of Balinese pandan fiber and coconut fiber was carried out by soaking in a 10% NaOH solution, aiming to remove lactic acid and cellulose, in order to increase the bond between the polyester matrix and the fiber, both Balinese pandan fiber and coconut fiber. In this study, the effect of soaking time of Balinese pandan fiber and coconut fiber on the characteristics of physical properties was studied through Thermogravimetric Analysis (TGA) testing, with LECO USA machine specifications, model: 604-100-700, series: 6204 at the UNUD Mechanical Engineering Laboratory. This test was carried out by soaking Balinese pandan fiber and coconut fiber in a 10% NaOH solution at various soaking times: 1 hour, 2 hours and 3 hours. Then the Thermogravimetric Analysis (TGA) test was carried out, then the characteristics and physical properties of the Balinese pandan fiber and coconut fiber were obtained in the form of dust content, water content, volatile, fix Carbon. Based on the test results data on the 10% NaOH treatment, for coconut fiber soaked for 2 hours, the highest Fix Carbon level was obtained, namely 21.15 and the highest Balinese pandan fiber was 15.50, which can be used for bending test materials. In Balinese pandan fiber, the highest volatile level was obtained at 89.81 and coconut fiber 80.73, which can be used for sound absorption test materials.
Perlakuan Post Weld Heat Treatment (PWHT)) Baja SS400 Terhadap Kekerasan Dan Struktur Mikro: Post Weld Heat Treatment (PWHT) of SS400 Steel on Hardness and Microstructure Hazazi, M.Izza; Lubis, Sudirman
Jurnal Pendidikan Teknik Mesin Undiksha Vol. 13 No. 2 (2025)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jptm.v13i2.94547

Abstract

Write the abstract in English here. If articles in English, abstract in Indonesia language do not need to be included. Writing abbreviations and mathematical formulas in the abstract needs to be avoided. The abstract consists of summary of the research objectives, approaches or methods used, important results and conclusionsPost weld heat treatment (PWHT) has a significant influence on the mechanical properties and microstructure of low carbon steel, especially in the Base Metal, Heat-Affected Zone (HAZ), and Weld Area regions. This study aims to analyze changes in hardness and microstructure due to PWHT at 400°C, 500°C, and 600°C. The hardness test results show that at 400°C there was an increase of 24.5 HV in the Base Metal, 8.9 HV in the HAZ, and a decrease of 5.4 HV in the Weld Area. At 500°C, the increase in hardness was more significant with a value of 28.7 HV in the Base Metal, 19.8 HV in the HAZ, and a decrease of 15 HV in the Weld Area. However, at 600°C, the Base Metal decreased in hardness by 21.6 HV, the HAZ remained stable without change, and the Weld Area decreased by 17 HV. Microstructure analysis shows that PWHT at 500°C produces more significant changes than other temperatures, with greater growth of ferrite and pearlite phases. This is in line with the increase in hardness in the Base Metal and HAZ areas. In addition, observations showed that a welding current of 130A provided optimal penetration, resulting in a good metallurgical bond between the weld metal and the base metal. Thus, this study confirms that PWHT can be utilized to control the hardness and microstructure of materials to improve the quality of welded joints in low carbon steel
Evaluasi Program Teaching Factory di Sekolah Menengah Kejuruan menggunakan CIPP Framework: Evaluation of the Teaching Factory Program in Vocational High Schools Using the CIPP Framework Prihantoro, Constantinus Rudy; Nugraha, Hari Din; Gumelar, Agung; Pratama, David; Gunadi, Diandra Keisha; Ibrahim, Fakhrizal Hafish
Jurnal Pendidikan Teknik Mesin Undiksha Vol. 13 No. 2 (2025)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jptm.v13i2.95013

Abstract

Teaching Factory is a learning program that optimizes the curriculum, resources, and human capital in Vocational High Schools (SMK) of Centers of Excellence. The objectives of this study are: (1) to identify the level of conformity in the implementation of the Teaching Factory program by analyzing the Context, Input, Process, and Product (CIPP) at five SMKs in DKI Jakarta; and (2) to formulate recommendations for improving and developing the Teaching Factory program to be more effective and sustainable. This research employed a quantitative method with a CIPP-based evaluation instrument, involving vice principals of curriculum and facilities, teachers, and students as research subjects. The findings reveal that: (1) Context: average score 3.61 out of 4, the curriculum is relatively aligned with industry needs, but the understanding of educational regulations remains low due to limited dissemination of government policies to teachers and school management; (2) Input: average score 3.55, facilities and infrastructure are inadequate due to limited budgets and lack of regular equipment calibration, which reduces the quality of marketable products and human resources, although teachers’ pedagogical competence (avg. 3.8) is already good; (3) Process: average score 3.59, learning methods are less innovative as teachers still rely on lectures and employ ineffective assessment instruments, resulting in low collaboration among students and suboptimal graduate employability; (4) Product: average score 3.26, the quality of marketable products falls below industry standards due to weak school quality control systems and the underutilization of project-based assessment. These findings can serve as a basis for strategies and curriculum development that better prepare students for the labor market and help reduce the unemployment rate among SMK graduates.
Pengaruh Variasi Post Weld Heat Treatment (Pwht) Terdadap Sifat Mekanik Baja Aisi 1045 Hasil Pengelasan Gmaw: The Effect of Post Weld Heat Treatment (PWHT) Variations on the Mechanical Properties of AISI 1045 Steel from GMAW Welding Results Martdiansyah, Dico; Lubis, Sudirman
Jurnal Pendidikan Teknik Mesin Undiksha Vol. 13 No. 2 (2025)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jptm.v13i2.96072

Abstract

The paper is written fully in Bahasa Indonesia (except the abstract is written in English) using Times New Roman font type, 12 font size and single row space. The paper size is A4 (21 × 29.7 cm) and the author is recommended not to write more than 10 pages. The main article content covers abstract, introduction, literature review, method, result, and conclusion. Pictures, tables and equations can be included in the article. Top, bottom, and right / left margin of the paper are 2.54 cm, respectively. The number of words in the abstract is around 200 words. The abstract should mention briefly the background, objectives, method, and main conclusions. Following the abstract, write down five keywords for indexing. An unusual abbreviation should be defined clearly after the first mentionThis study examines the effect of Post Weld Heat Treatment (PWHT) on the mechanical properties of AISI 1045 steel, particularly tensile strength and hardness, at various treatment temperatures. The tensile test results show that increasing the PWHT temperature tends to decrease the tensile strength of the material. At 600°C, the tensile strength reached 632.62 N/mm², yield strength 408.08 N/mm², and elongation 5.76%. At 700°C, the tensile strength decreased to 551.89 N/mm², the yield strength increased to 433.74 N/mm², and the elongation increased to 7.45%. Meanwhile, at 800°C, the tensile strength continued to decrease to 518.86 N/mm², the yield strength dropped significantly to 306.35 N/mm², and the elongation decreased to 4.8%. Hardness testing showed that the lowest hardness value occurred at 600°C with Base Metal (200.7 HV), Weld Area (220.4 HV), and HAZ (206.9 HV). Meanwhile, the highest hardness value was recorded at 800°C with Base Metal (214.3 HV), Weld Area (240.3 HV), and HAZ (223 HV). The highest hardness value in the Weld Area was obtained at 700°C (263.5 HV). Overall, the higher the PWHT temperature, the hardness of the material increased, but the tensile strength decreased, indicating an increasing trend in material brittleness. This study confirms that PWHT has a significant effect on the mechanical properties of AISI 1045 steel, where the increase in treatment temperature increases hardness but decreases tensile strength. Therefore, the selection of the optimal PWHT temperature needs to be considered to maintain a balance between hardness and toughness of the material in engineering applications.
PENGARUH FASILITAS BENGKEL TERHADAP MINAT BELAJAR DAN PENGUASAAN KOMPETENSI KEJURUAN SISWA SMK TEKNIK PEMESINAN DI PROVINSI GORONTALO: The Influence Of Workshop Facilities On Learning Interest And Mastery Of Vocational Competencies Of Machinery Engineering Vocational School Students In Gorontalo Province Hendra Uloli; Esta Larosa; I Wayan Rupawan
Jurnal Pendidikan Teknik Mesin Undiksha Vol. 13 No. 2 (2025)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Write the abstract in English here. If articles in English, abstract in Indonesia language do not need to be included. Writing abbreviations and mathematical formulas in the abstract needs to be avoided. The abstract consists of summary of the research objectives, approaches or methods used, important results and conclusions. This study aims to determine the effect of workshop facilities on students' learning interest and mastery of vocational competencies in the Mechanical Engineering expertise program at SMK Gorontalo Province. The background of this study is based on the importance of the role of workshop facilities in increasing students' learning interest which emphasizes mastery of competencies. The research method used is quantitative research, using path analysis to determine the relationship between two or more variables expressed by the magnitude of the correlation coefficient and statistical significance. This study discusses three variables consisting of one independent variable, namely the effect of workshop facilities (X) two dependent variables, namely learning interest (Y1) and (Y2) mastery of vocational competencies. The research sample consisted of XII students majoring in Mechanical Engineering at several state vocational schools in Gorontalo Province. Data were collected through questionnaires, The results of the analysis showed that there was a positive and significant influence between 1. workshop facilities on learning interest of 38.4 while 62.6% was influenced by other factors that were not examined, 2. Workshop facilities on competency mastery had a significant effect of 46.9% while 53.1% was influenced by other factors that were not examined. 3. Interest in learning towards competency mastery has a significant effect of 55% while 45% is influenced by other factors not studied. 4. Workshop facilities through interest in learning towards competency mastery have a significant effect of 64.20% while 35.8% is influenced by factors not studied.
Pengembangan Bahan Ajar Mata Kuliah Konversi Energi Berbasis Teknologi: Development of Technology-Based Energy Conversion Course Teaching Materials Wijaya, Rizki; Setiyo, Edi
Jurnal Pendidikan Teknik Mesin Undiksha Vol. 13 No. 2 (2025)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jptm.v13i2.100060

Abstract

This study aims to develop technology-based Energy Conversion course teaching materials using the Canva application in the form of valid and practical E-Modules. The background of this study is the limitations of conventional teaching materials that are less interactive and have not utilized technology optimally, which causes low student interest and understanding of the material. The research method used is Research and Development (R&D) with the ADDIE (Analyze, Design, Development, Implementation, Evaluation) development model. The subjects of the study were students of Mechanical Engineering Education, Sriwijaya University, class of 2022. The validation results by material experts and media experts showed that the E-Module developed was in the "Very Valid" category, with an average score of 4.6 and 4.5, respectively. The practicality trial conducted through the One-to-One, Small Group, and Field Test stages also showed that the product is included in the "Very Practical" category, with an average score of 4.25 for the One-to-one trial, 3.83 for the Small Group trial and 4.05 after being tested on all 2022 class Palembang students (Field Test). Thus, the development of this Technology-based E-Module is declared suitable for use as an alternative teaching material that can increase the effectiveness of learning and student understanding in the Energy Conversion course

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