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SolidWorks Flow Simulation: Selecting the optimal mesh for conducting CFD analysis on a centrifugal fan Salmat, Salmat; Yanti Sari, Delima; Fernanda, Yolli; Prasetya, Febri
Journal of Engineering Researcher and Lecturer Vol. 2 No. 3 (2023): Regular Issue
Publisher : Researcher and Lecturer Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58712/jerel.v2i3.104

The accuracy of mesh use determines the suitability of simulation results with experimental test results, therefore it is necessary to study the type and number of mesh used for flow simulation. This study aims to investigate the type of mesh and the number of cells that are appropriately used in the simulation of centrifugal fans using the Solidworks Flow Simulation module. The research was conducted by comparing the simulation results with the experimental results on centrifugal fans that have been carried out by previous studies. In this research, the type of mesh used is global mesh. The parameter of determining the number of cells is done by varying the mesh level because the mesh level affects the number of cells. In this simulation study, the boundary condition is set to one flow volume of 5 m3/h and a rotation speed of 92.362 rad/s. In this study, the total pressure and efficiency of the centrifugal fan are the things that are seen from the comparison of flow simulation with the experiment. Based on the simulation results that have been carried out, mesh levels 1 to 4 show results that differ significantly from the experimental results. At machine levels 5 to 7, the results are close to the experimental results, but the closest total pressure and efficiency values are at mesh level 5. The results of this study can be a reference for research that simulates centrifugal fans.

Optimizing learning engagement and performance in technical education: Harnessing the power of video tutorials for enhanced motivation and skill development in Shield Metal Arc Welding Subject Hafis, M; Syahril, Syahril; Refdinal, Refdinal; Prasetya, Febri
Journal of Engineering Researcher and Lecturer Vol. 2 No. 3 (2023): Regular Issue
Publisher : Researcher and Lecturer Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58712/jerel.v2i3.112

This study aimed to enhance the quality of Shield Metal Arc Welding instruction in Class XI Welding Engineering at State Vocational High School 1 Bukittinggi through the integration of interactive media videos. Employing a class action research design with saturated sampling, the research findings revealed that the implementation of video tutorials significantly improved student motivation and learning outcomes. The use of video tutorials captured students' interest, resulting in increased motivation for learning Shield Metal Arc Welding. In the initial cycle, student motivation in Class XI Welding Engineering at State Vocational High School 1 Bukittinggi, as measured in meeting I, stood at 54%, indicating a less motivated state. By meeting II of cycle I, the motivation increased to 61%, categorized as moderately motivated. In the subsequent cycle, meeting I recorded a motivation level of 72%, demonstrating a motivated state, while meeting II in cycle II reached 82%, indicating a highly motivated state. Consequently, there was a noticeable progression in student learning motivation from cycle I to cycle II. Furthermore, student learning outcomes in Shield Metal Arc Welding for Class XI Welding Engineering at State Vocational High School 1 Bukittinggi improved when videos were utilized as interactive media. In cycle I, the average student learning outcome was 77.88, categorized as moderate. In cycle II, the average increased to 79.06, reflecting a high level of achievement. This indicates a positive shift in student learning outcomes, moving from moderate to good performance.

Optimizing student learning in Computer Numerical Control subject: A comprehensive analysis of influential factors Fadri, Muhammad Al; A, Yufrizal; Fernanda, Yolli; Prasetya, Febri
Journal of Engineering Researcher and Lecturer Vol. 2 No. 3 (2023): Regular Issue
Publisher : Researcher and Lecturer Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58712/jerel.v2i3.114

The learning outcomes achieved by students are influenced by many factors. This study aims to determine the level of support of factors (motivation, interest, family, teacher's role, learning methods and learning facilities) that influence the learning process in achieving student learning outcomes in CNC learning in class XI. The subjects in the study were Class XI students majoring in Mechanical Engineering at SMK Negeri 5 Padang in the 2022/2023 academic year totalling 37 people. Because the number of research subjects (population) is less than 100 people, so all of them are taken as samples or total sampling. Data collection was carried out using observation, questionnaires and documentation. Data analysis techniques using descriptive statistical techniques. From the data analysis, it shows that of each factor studied, the learning facility factor has the lowest level of support for student academic success compared to other factors that have been studied by researchers. Therefore, learning facilities at SMK Negeri 5 Padang in CNC subjects need to be improved again to support the student learning process and achieve better learning achievements for students.

Exploration of the implementation of project-based learning in technical drawing courses toward Fitra, Rizki; Prasetya, Febri; Adri, Junil
Journal of Engineering Researcher and Lecturer Vol. 3 No. 1 (2024): Regular Issue
Publisher : Researcher and Lecturer Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58712/jerel.v3i1.128

The instruction of Manufacturing Technical Drawings remains predominantly teacher-centered, lacking diversity in methodologies, thereby causing students to perceive the subject as challenging. This challenge primarily stems from their struggles in comprehending CAD drawing concepts, interpreting existing drawings, and understanding the functionalities of tools in the AutoCAD application, as outlined in the job sheet. Consequently, students' learning achievements fall short of the minimum passing standards SMK Negeri 1 Tanjung Raya set. This research aims to evaluate the impact of project-based learning on learning outcomes in manufacturing technical drawings and assess the quality of instructional tools employed. The study involves two groups, experimental and control groups, selected through cluster random sampling. Data collection includes pretests administered before the instructional intervention and post-tests conducted after both groups receive different treatments. Results reveal that students in the experimental group attain significantly higher average scores than the control group, indicating a substantial influence of project-based learning on learning outcomes. This approach enhances students' understanding, engagement, and critical thinking abilities within the subject area.

Optimization of Artec Leo 3D Scanner parameters for object accuracy using the Taguchi Method Rhionaldo, Ananda Jafron; Rifelino, Rifelino; Sari, Delima Yanti; Prasetya, Febri
Journal of Engineering Researcher and Lecturer Vol. 4 No. 2 (2025): Regular Issue
Publisher : Researcher and Lecturer Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58712/jerel.v4i2.186

This study focuses on optimizing the scanning parameters of the Artec Leo 3D Scanner to enhance scanning accuracy by minimizing geometric deviations. The experimental design utilizes the Taguchi L4(2³) orthogonal array method to examine the influence of three scanning factors: distance, angle, and lighting at two levels. A 16-inch car wheel, chosen for its geometric complexity, was scanned under various parameter combinations. The results indicated that the combination of indoor lighting, a 45° angle, and a scanning distance of 100 cm yielded the smallest deviation (0.5%) and the highest signal-to-noise (S/N) ratio (6.02 dB). Analysis of variance (ANOVA) revealed that the scanning distance contributed the most to the variation in scanning accuracy (65.09%), followed by lighting (34.64%) and angle (0.27%). A confirmation test with the optimal parameters further reduced the deviation to 0.4%, validating the effectiveness of the Taguchi method for parameter optimization. This study’s findings contribute valuable insights for industries that require high-precision 3D models, such as aerospace, automotive, and healthcare. The research demonstrates the importance of optimizing scanning parameters and offers a practical approach to improving 3D scanning processes. Future research can expand by exploring environmental conditions, scan resolution, and machine learning integration for real-time adjustments.

The effectiveness of the STAD Cooperative Learning Method assisted by Flashcard Media in improving students’ learning outcomes Indra, Yoan Alfarezy; Prasetya, Febri; Primawati, Primawati; Abadi, Zainal
Journal of Engineering Researcher and Lecturer Vol. 4 No. 2 (2025): Regular Issue
Publisher : Researcher and Lecturer Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58712/jerel.v4i2.187

This study explores the effectiveness of the Student Teams Achievement Divisions (STAD) cooperative learning model, supported by flashcard media, in enhancing student learning outcomes in Manufacturing Technical Drawing at SMK Negeri 1 West Sumatra. A quasi-experimental control group design was employed, where the experimental group used the STAD method integrated with flashcards, and the control group received traditional lecture-based instruction. Post-test results showed that the experimental group significantly outperformed the control group, achieving a higher mean score of 79.68 compared to 63.84, with an N-Gain score of 50.81%, indicating moderate improvement. The study found that the STAD model, combined with flashcards, boosted academic achievement and promoted more consistent and equitable learning outcomes. Flashcards played a vital role by simplifying complex concepts and enhancing student engagement. This study fills a gap in vocational education by demonstrating the effectiveness of combining cooperative learning and visual aids in technical education. The research offers valuable insights for educators in similar contexts, proposing a cost-effective and scalable instructional method that can be applied across various technical disciplines. However, the study’s limitation lies in its short-term implementation, and further research is needed to explore the long-term effects of this combined learning strategy.

SolidWorks Flow Simulation: Selecting the optimal mesh for conducting CFD analysis on a centrifugal fan Salmat, Salmat; Yanti Sari, Delima; Fernanda, Yolli; Prasetya, Febri
Journal of Engineering Researcher and Lecturer Vol. 2 No. 3 (2023): Regular Issue
Publisher : Researcher and Lecturer Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58712/jerel.v2i3.104

The accuracy of mesh use determines the suitability of simulation results with experimental test results, therefore it is necessary to study the type and number of mesh used for flow simulation. This study aims to investigate the type of mesh and the number of cells that are appropriately used in the simulation of centrifugal fans using the Solidworks Flow Simulation module. The research was conducted by comparing the simulation results with the experimental results on centrifugal fans that have been carried out by previous studies. In this research, the type of mesh used is global mesh. The parameter of determining the number of cells is done by varying the mesh level because the mesh level affects the number of cells. In this simulation study, the boundary condition is set to one flow volume of 5 m3/h and a rotation speed of 92.362 rad/s. In this study, the total pressure and efficiency of the centrifugal fan are the things that are seen from the comparison of flow simulation with the experiment. Based on the simulation results that have been carried out, mesh levels 1 to 4 show results that differ significantly from the experimental results. At machine levels 5 to 7, the results are close to the experimental results, but the closest total pressure and efficiency values are at mesh level 5. The results of this study can be a reference for research that simulates centrifugal fans.

Optimizing learning engagement and performance in technical education: Harnessing the power of video tutorials for enhanced motivation and skill development in Shield Metal Arc Welding Subject Hafis, M; Syahril, Syahril; Refdinal, Refdinal; Prasetya, Febri
Journal of Engineering Researcher and Lecturer Vol. 2 No. 3 (2023): Regular Issue
Publisher : Researcher and Lecturer Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58712/jerel.v2i3.112

This study aimed to enhance the quality of Shield Metal Arc Welding instruction in Class XI Welding Engineering at State Vocational High School 1 Bukittinggi through the integration of interactive media videos. Employing a class action research design with saturated sampling, the research findings revealed that the implementation of video tutorials significantly improved student motivation and learning outcomes. The use of video tutorials captured students' interest, resulting in increased motivation for learning Shield Metal Arc Welding. In the initial cycle, student motivation in Class XI Welding Engineering at State Vocational High School 1 Bukittinggi, as measured in meeting I, stood at 54%, indicating a less motivated state. By meeting II of cycle I, the motivation increased to 61%, categorized as moderately motivated. In the subsequent cycle, meeting I recorded a motivation level of 72%, demonstrating a motivated state, while meeting II in cycle II reached 82%, indicating a highly motivated state. Consequently, there was a noticeable progression in student learning motivation from cycle I to cycle II. Furthermore, student learning outcomes in Shield Metal Arc Welding for Class XI Welding Engineering at State Vocational High School 1 Bukittinggi improved when videos were utilized as interactive media. In cycle I, the average student learning outcome was 77.88, categorized as moderate. In cycle II, the average increased to 79.06, reflecting a high level of achievement. This indicates a positive shift in student learning outcomes, moving from moderate to good performance.

Optimizing student learning in Computer Numerical Control subject: A comprehensive analysis of influential factors Fadri, Muhammad Al; A, Yufrizal; Fernanda, Yolli; Prasetya, Febri
Journal of Engineering Researcher and Lecturer Vol. 2 No. 3 (2023): Regular Issue
Publisher : Researcher and Lecturer Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58712/jerel.v2i3.114

The learning outcomes achieved by students are influenced by many factors. This study aims to determine the level of support of factors (motivation, interest, family, teacher's role, learning methods and learning facilities) that influence the learning process in achieving student learning outcomes in CNC learning in class XI. The subjects in the study were Class XI students majoring in Mechanical Engineering at SMK Negeri 5 Padang in the 2022/2023 academic year totalling 37 people. Because the number of research subjects (population) is less than 100 people, so all of them are taken as samples or total sampling. Data collection was carried out using observation, questionnaires and documentation. Data analysis techniques using descriptive statistical techniques. From the data analysis, it shows that of each factor studied, the learning facility factor has the lowest level of support for student academic success compared to other factors that have been studied by researchers. Therefore, learning facilities at SMK Negeri 5 Padang in CNC subjects need to be improved again to support the student learning process and achieve better learning achievements for students.

Exploration of the implementation of project-based learning in technical drawing courses toward Fitra, Rizki; Prasetya, Febri; Adri, Junil
Journal of Engineering Researcher and Lecturer Vol. 3 No. 1 (2024): Regular Issue
Publisher : Researcher and Lecturer Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58712/jerel.v3i1.128

The instruction of Manufacturing Technical Drawings remains predominantly teacher-centered, lacking diversity in methodologies, thereby causing students to perceive the subject as challenging. This challenge primarily stems from their struggles in comprehending CAD drawing concepts, interpreting existing drawings, and understanding the functionalities of tools in the AutoCAD application, as outlined in the job sheet. Consequently, students' learning achievements fall short of the minimum passing standards SMK Negeri 1 Tanjung Raya set. This research aims to evaluate the impact of project-based learning on learning outcomes in manufacturing technical drawings and assess the quality of instructional tools employed. The study involves two groups, experimental and control groups, selected through cluster random sampling. Data collection includes pretests administered before the instructional intervention and post-tests conducted after both groups receive different treatments. Results reveal that students in the experimental group attain significantly higher average scores than the control group, indicating a substantial influence of project-based learning on learning outcomes. This approach enhances students' understanding, engagement, and critical thinking abilities within the subject area.

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