Journal of Engineering Researcher and Lecturer最新文献

Experimental investigation of the infill response under the inter-story drift level for different opening location 不同开口位置的层间漂移水平下填充物响应的实验研究

Journal of Engineering Researcher and Lecturer Pub Date : 2024-07-28 DOI: 10.58712/jerel.v3i2.155

Hsu Nandar Htun, Khin Su Su Htwe

{"title":"Experimental investigation of the infill response under the inter-story drift level for different opening location","authors":"Hsu Nandar Htun, Khin Su Su Htwe","doi":"10.58712/jerel.v3i2.155","DOIUrl":"https://doi.org/10.58712/jerel.v3i2.155","url":null,"abstract":"This paper investigates the response of infilled frames associated with inter-story drift ratio considering the central and eccentric window opening under the in-plane force. The behavior of the structure was studied by experimental and numerical approach. Experimental results show that the lateral load capacity in eccentric window frame (EW) is 1.17 times of central window frame (CW due to interruption of diagonal loaded action by the central opening. The elastic condition of CW frame and EW frame is obtained at lateral drift of 0.2% and 0.4% respectively. As a result of weak mortar interaction, the diagonal action of crack distribution emerges along the corner of the panel in testing A numerical simulation was performed and validated with experimental results. As the comparison of results, the elastic limit points coincide between the two approaches of numerical and experimental. However, the slightly difference occurs at the peak point. The similarity can be seen in the range of 80% to 100% in the value of peak load and displacement at peak load. The numerical investigation revealed that the highest stress distribution occurred along the diagonal axis, aligning with the results of the experimental investigation.","PeriodicalId":434097,"journal":{"name":"Journal of Engineering Researcher and Lecturer","volume":"5 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141796469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis and control of occupational safety risks using the HIRARC method in the Machining Workshop 使用 HIRARC 方法分析和控制加工车间的职业安全风险

Journal of Engineering Researcher and Lecturer Pub Date : 2024-07-28 DOI: 10.58712/jerel.v3i2.142

Roki Putra Anwar, Andre Kurniawan, Mulianti, Zainal Abadi

{"title":"Analysis and control of occupational safety risks using the HIRARC method in the Machining Workshop","authors":"Roki Putra Anwar, Andre Kurniawan, Mulianti, Zainal Abadi","doi":"10.58712/jerel.v3i2.142","DOIUrl":"https://doi.org/10.58712/jerel.v3i2.142","url":null,"abstract":"This qualitative study focuses on occupational safety and health in vocational school machining workshops to identify significant risks related to training practices. Workplace accidents are considered a serious threat to workers and equipment, potentially affecting productivity and environmental safety. Observations at several vocational schools, especially at SMK Negeri 1 Batipuh, showed low student awareness and compliance with OHS regulations, increasing the risk of risky behaviour and accidents. To address this, the research used the Hazard Identification, Risk Assessment, and Risk Control (HIRARC) method, which systematically identifies hazards, evaluates risks based on severity and likelihood, and proposes control measures. The research at SMK Negeri 1 Batipuh involved direct observation, interviews, and analysis of SOPs in the workshop, finding significant risk variations in workshop conditions, lathe operations, welding, material handling, hand tool use, and machine protection. The results highlighted the predominance of intermediate risks in all-hazards analyzed, emphasizing the importance of developing more effective risk management strategies. This research aims to reduce accidents and improve student safety during training by addressing existing OHS implementation gaps and implementing appropriate risk controls. In addition to filling a gap in the literature, this study provides practical insights for improving OHS practices in vocational schools.","PeriodicalId":434097,"journal":{"name":"Journal of Engineering Researcher and Lecturer","volume":"9 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141797108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study of the variation of the leading edge of a railway crane on the aerodynamic characteristics 研究铁路起重机前缘对空气动力特性的影响

Journal of Engineering Researcher and Lecturer Pub Date : 2024-07-28 DOI: 10.58712/jerel.v3i2.145

W. Vernando, Andre Kurniawan, Randi Purnama Putra, Mirta Widia

引用次数: 0

Implementation of experiential learning method in mechanical drawing course to enhance student understanding through real projects 在机械制图课程中实施体验式学习法，通过实际项目加深学生的理解

Journal of Engineering Researcher and Lecturer Pub Date : 2024-07-28 DOI: 10.58712/jerel.v3i2.127

Ridhollah Nasution, A. K., Y. Fernanda

引用次数: 0

ELGO electric motorcycle: Design and analysis of trail-type electric motorcycle frame using finite element analysis ELGO 电动摩托车：利用有限元分析设计和分析越野型电动摩托车车架

Journal of Engineering Researcher and Lecturer Pub Date : 2024-07-28 DOI: 10.58712/jerel.v3i2.129

Muhammad Fatiy Elmoudi, Delima Yanti Sari, Yufrizal

引用次数: 0

Effectiveness of case method learning to optimise students' understanding of industrial mechanical machinery science 案例教学法在优化学生对工业机械科学理解方面的效果

Journal of Engineering Researcher and Lecturer Pub Date : 2024-07-28 DOI: 10.58712/jerel.v3i2.144

Rendy Dwi Putra, Waskito, Andril Arafat, Juan Luis Cabanillas García, Firas Tayseer Mohammad Ayasrah, Aprilla Fortuna

{"title":"Effectiveness of case method learning to optimise students' understanding of industrial mechanical machinery science","authors":"Rendy Dwi Putra, Waskito, Andril Arafat, Juan Luis Cabanillas García, Firas Tayseer Mohammad Ayasrah, Aprilla Fortuna","doi":"10.58712/jerel.v3i2.144","DOIUrl":"https://doi.org/10.58712/jerel.v3i2.144","url":null,"abstract":"Education has a central role in preparing individuals for the complexities of the modern world of work. Particularly in the context of education in Vocational High Schools, developing students' competencies in collaboration, creativity, and problem-solving is essential. This study explores the effectiveness of the case-based learning method in improving students' understanding of industrial mechanics. The study used a quasi-experiment design with control and experimental groups. The statistical analysis results showed that the case method was more effective in improving students' cognitive mastery than the conventional lecture method. Students who participated in case method learning showed significant improvement in the post-intervention test, demonstrating the superiority of this method in supporting a more effective learning process and preparing students for practical challenges in the field. In conclusion, the case method increases students' participation and interactivity in the learning process and deepens their understanding of technical concepts in industrial mechanics. This research provides a solid basis for implementing more effective and relevant learning methods in preparing vocational students for the increasingly complex needs of the world of work.","PeriodicalId":434097,"journal":{"name":"Journal of Engineering Researcher and Lecturer","volume":"1 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141796487","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimizing student learning in Computer Numerical Control subject: A comprehensive analysis of influential factors 优化计算机数控学科的学生学习：影响因素综合分析

Journal of Engineering Researcher and Lecturer Pub Date : 2023-11-16 DOI: 10.58712/jerel.v2i3.114

Muhammad Al Fadri, Yufrizal A, Y. Fernanda, Febri Prasetya

{"title":"Optimizing student learning in Computer Numerical Control subject: A comprehensive analysis of influential factors","authors":"Muhammad Al Fadri, Yufrizal A, Y. Fernanda, Febri Prasetya","doi":"10.58712/jerel.v2i3.114","DOIUrl":"https://doi.org/10.58712/jerel.v2i3.114","url":null,"abstract":"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.","PeriodicalId":434097,"journal":{"name":"Journal of Engineering Researcher and Lecturer","volume":"16 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139270148","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

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 优化技术教育中的学习参与和绩效：利用视频教程的力量提高金属保护弧焊科目的学习动力和技能发展

Journal of Engineering Researcher and Lecturer Pub Date : 2023-11-16 DOI: 10.58712/jerel.v2i3.112

M. Hafis, S. Syahril, R. Refdinal, Febri Prasetya

{"title":"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","authors":"M. Hafis, S. Syahril, R. Refdinal, Febri Prasetya","doi":"10.58712/jerel.v2i3.112","DOIUrl":"https://doi.org/10.58712/jerel.v2i3.112","url":null,"abstract":"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.","PeriodicalId":434097,"journal":{"name":"Journal of Engineering Researcher and Lecturer","volume":"36 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139269343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

SolidWorks Flow Simulation: Selecting the optimal mesh for conducting CFD analysis on a centrifugal fan SolidWorks 流量模拟：选择最佳网格对离心风机进行 CFD 分析

Journal of Engineering Researcher and Lecturer Pub Date : 2023-11-16 DOI: 10.58712/jerel.v2i3.104

Salmat Salmat, Delima Yanti Sari, Y. Fernanda, Febri Prasetya

{"title":"SolidWorks Flow Simulation: Selecting the optimal mesh for conducting CFD analysis on a centrifugal fan","authors":"Salmat Salmat, Delima Yanti Sari, Y. Fernanda, Febri Prasetya","doi":"10.58712/jerel.v2i3.104","DOIUrl":"https://doi.org/10.58712/jerel.v2i3.104","url":null,"abstract":"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.","PeriodicalId":434097,"journal":{"name":"Journal of Engineering Researcher and Lecturer","volume":"58 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139268395","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimization of impeller blade number in centrifugal pump for crude oil using Solidworks Flow Simulation 利用 Solidworks Flow Simulation 优化原油离心泵叶轮叶片数

Journal of Engineering Researcher and Lecturer Pub Date : 2023-11-16 DOI: 10.58712/jerel.v2i3.116

Muhammad Fikhri Aldio, Waskito Waskito, P. Purwantono, Remon Lapisa

{"title":"Optimization of impeller blade number in centrifugal pump for crude oil using Solidworks Flow Simulation","authors":"Muhammad Fikhri Aldio, Waskito Waskito, P. Purwantono, Remon Lapisa","doi":"10.58712/jerel.v2i3.116","DOIUrl":"https://doi.org/10.58712/jerel.v2i3.116","url":null,"abstract":"Every type of fluid to be transferred has specific characteristics such as viscosity, density, friction, and others, thus requiring the selection of the appropriate pump type. One of the factors influencing the performance of a centrifugal pump is the number of blades used. This research aims to explore the influence of the number of blades on a centrifugal pump used as a fluid transfer device for crude oil. The study was conducted using the Computational Fluid Dynamics (CFD) method. The analyzed variations of the number of blades included three options, namely centrifugal pumps with 12, 14, and 16 blades. Based on the simulation results conducted using Solidworks Research License 2021-2022 software, it was found that the centrifugal pump with 12 blades exhibited the most optimal performance. The simulation results show uniform flow and pressure around the mid-span plane of the 12-blade impeller. In the case of the 12-blade impeller, the flow thrown by the centrifugal force is concentrated in the middle of the channel towards the outlet, resulting in higher pressure and volume flow rates.","PeriodicalId":434097,"journal":{"name":"Journal of Engineering Researcher and Lecturer","volume":"30 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139267187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0