Jurnal Vokasi Mekanika (VoMek)

Review of Padang 1 State Vocational School’s Machinery Workshop Facilities and Infrastructure

Teuku Kamal Furqan — 2025-05-31

This article describes issue of mechanical worshop facilities and infrastructures at Vocational High School 1 Padang, aims to evaluate the availability and feasibility of facilities and infrastructure, in order to encourage learning process of mechanical engineering. This study reviews aspects related to the adequacy of mechanical workshop’s facilities and infrastructures including the existence and condition of machine, workshop space to other supporting infrastructure linked to work productivity and safety such as wall, lighting, ventilation, and floor conditions. Descriptive quantitative method was used with data collection techniques consisting of observation, interview with workshop managers, and documentation. The result revealed 87% of the facilities were classified as operational and available to support practical activities. Total percentage of feasibility for each workshop are: 90% of the lathe workshop, 77% of the miling machine workshop, 90% of the bench workshop, and 92 % of the welding and grinding machine workshop. The maximum percentage of facility feasibilities which is 100% has not been achieved, influenced by several factors related to the damage and unavailability of several items. In infrastructure, the ventilation is of standard size; lighting is appropriate and sufficient; the wall is of limited height and filled with large machines resulting in limited space for movement; the floor of the lathe workshop is inadequate with a number of cement patches on the floor cracks. Indicating the need for repairs and upgrades to increase the percentage of feasibility to maximum.

Making a Workshop Animation Video In The Basic Wood Working Practice Course Of The Civil Engineering Departement

Hestika Wulandari — 2025-05-31

Thare study discusses then making of wood workshop animation videos and live demonstrations using sketchup in basic woodworking practice courses, then destination of thare study are to decide then degree of legality testing, usefulity and normalized gain nomina. Thare studies approach takes then Studies and Development (R&D) method with then Four-D (4D) development model what consarets of 4 stages, namely Define, Design, Development, and Dareseminate. Then product was legalated by 3 matter adept, 2 media adept, and 12 students who studied then Basic Woodworking Practice course in then July-December 2024 semester. Based on then evaluation of animated video media using sketchup that has been carried out, then results of then assessment by matter adept are 0.88 what are counted in then legal category. Media expert assessment obtained a nomina of 0.82 what are counted in then legal category. Usefulity assessment obtained a nomina of 0.8996 what are counted in then very useful category. Based on then results of thare study, it can be deduce that then workshop animation video media using Sketchup are legal and useful for take in knowledge.

The Effectiveness of the Use of Project Based Learning Models on Student Learning Outcomes in Fracturing Engineering Subjects at SMK Negeri 1 Tanjung Raya

Putra Fajar Perdana — 2025-05-31

The low learning results of students when learning the Frais Technique serve as the impetus for this study. It is believed that this is because students are not actively participating in teacher-centered learning models and their learning is not at its best. The purpose of this study is to ascertain how well the Project Based Learning learning paradigm affects the learning outcomes of SMK Negeri 1 Tanjung Raya students studying framing techniques. This study employs quantitative approaches and quasi-experimental research. 40 students made up the study's sample, and they were divided into two categories: the experimental category and the control category. The research period was carried out during the academic year 2024–2025's odd semester. The findings from the analysis of the data in this research suggest that the learning model centered around projects is significantly more influential than the conventional model to improve learning outcomes, the findings of the analysis illustrate that the average post-test results of the experimental class of 75.25 are greater than the control class with an average of 63.75. Based on the results of research and discussion, quasi-experimental research on the XI grade Frais Engineering Subject at SMK Negeri 1 Tanjung Raya can be concluded that there is an effectiveness of using project-based learning models on student learning outcomes where the value of learning outcomes in groups using project-based learning models is higher than conventional models.

The Effect Of Problem Based Learning Model On Student Learning Results On The Elements Of Cost Planning And Scheduling Of Building Construction At SMK Negeri 1 Pariaman

Yunika Meicelia Putri — 2025-05-31

This lowed studied outcomes from students element a cost planning and scheduling of building construction element in choosing the PBL learning model. The researched waste make to determiner how effective the PBL studies model is in improve college studies outcoms through the elements of Cost Planning and Scheduling of Building Construction. The type of researched former attempt researched by affected tentative design form. The number of researched samples used was 45 people: 20 XI DPIB 1 students the attempt class, then 25 XI DPIB 2 the control clases. This attempt classes used Problem Based Learning (PBL) model. The researched wased carri off by giving test instrumental form of pretests with posttests. For the test of test questions, has been conducted in clases XI DPIB 2college SMKN 1 Padang within 26 respondents. This studies show that PBL can improve college studies outcomes in the matter of calculating foundation work. This averrage value student sudeis outcom attempt class was 77.95 with control classes waste 61.76. In addition, this effect hypothes testing carried out usee this Indepedent Sample t-Test tes obtain t_count> t_table or 6.038> 2.01669 then Ha is accepted. Therefore, this studied proves that PjBL model could fix the studies achievement of DPIB XI class college on the elements of the Cost Plan and Building Construction Scheduling.

Analysis Of Physical And Mechanical Properties Of Recycled Aluminum With Variations In Molding Temperatures And Adding Degasser Powder As An Environmentally Friendly Material

Zainal Abadi — 2025-05-31

Recycling is the process of converting used materials into new materials with the aim of preventing waste that can actually be useful, reducing the use of new raw materials, reducing energy use, reducing pollution, land damage. The purpose of this study was to determine the most optimal pouring temperature to produce the best casting of the physical and mechanical properties of recycled aluminum material added with degasser powder. The urgency of this study is as a research material in the field of materials. This research method is to make 3 variations of melting temperature before pouring into the mold, the temperature variations used are 675⁰-700⁰C, 700⁰-725⁰C and 725⁰-750⁰C. At any temperature variation before pouring into the mold, degasser powder is also added to help clean the molten metal from the gases trapped in the molten metal. After the sample is molded, the results are visually observed, then a specimen is made to test the mechanical properties of the used aluminum casting. The data from the test results show that there is a fairly large porosity value in each variation. The hardness value of the test results shows that it is directly proportional to the temperature variation. At a temperature of 725⁰-750⁰C the average hardness value is 98.5 HVN. While the tensile strength at a temperature of 725⁰-750⁰C value is 83.58 Mpa, at a temperature of 700⁰-725⁰C = 74.39 Mpa and at a temperature of 675⁰-700⁰C = 71.5 Mpa. Thus the most optimal temperature in this used aluminum casting is 725⁰-750⁰C.

The Effect of Workplace Health and Safety on Eleventh Grade Student Learning Outcomes in the Lathe Machining Engineering Subject at State Vocational School 1 Lembah Melintang

Muhammad Azis Fuadi — 2025-05-31

The adoption of occupational safety and health (OHS) in vocational education environments, especially Vocational High Schools (SMK), is a crucial element in supporting a safe and effective practical learning process. However, observations at SMKN 1 Lembah Melintang showed that the implementation of OHS principles was not optimal, including the absence of consistency in utilizing personal protective equipment (PPE) and the unavailability of structured practice SOPs. Based on these conditions, this research endeavors to explore the effect of implementing OHS measures on students’ educational outcomess in the Lathe Machining Engineering subject for grade 11. the research applies a quantitative methodology with an associative analysis technique. The study population was all 31 students of grade 11 Machining Engineering, who were also sampled through total sampling techniques. Data acquisition was performed via questionnaires and documentation, then analyzed employing validity, reliability, normality, linearity, simple linear regression, and t-test analyses with SPSS. The outcome of the study showed that a significant positive correlation between the implementation of OHS and student learning outcome. The computed correlation coefficient indicated 0.708 and the determination value (R²) of 0.501 indicate that K3 contributes 50.1% to the variation of learning outcomes. The t-test shows a t-value of 5.395 > t-table 1.699 which strengthens the significance of the influence. Thus, it can be concluded that K3 has a key element in supporting improvements in student performance in learning the practice of lathe machining techniques

Students' Perception Of Machining Workshop Facilities And K3 Knowledge Towards Learning Outcomes In The Subject Of Lathe Machining Engineering In Grade 11 Of SMK Negeri 1 Sumatera Barat

Ahmad Rifai Sihombing — 2025-05-31

Vocational schools are a strategic forum to introduce and build students' awareness of the importance of behaviors that support Occupational Health and Safety (K3). Based on the results of pre-observation at SMK Negeri 1 West Sumatra, it was found that several problems were quite significant related to learning outcomes and students' knowledge about Occupational Health and Safety (K3) in the Lathe Machining Engineering Subject. Inadequate workshop facilities result in students not understanding and not utilizing K3 equipment. This problem is the author's material to conduct research to measure Students' Perception of Machining Workshop Facilities and Students' K3 Knowledge of Student Learning Outcomes which is carried out by descriptive analysis methods. This study analyzed two independent variables and one dependent variable. Variables Workshop facilities, variables K3 Knowledge and Learning Outcomes as variables Y. The purpose of this study is to show that the percentage results obtained from each variable can describe how students' perception of the K3 Machining and Knowledge Workshop Facilities and Learning Outcomes are. The results of the study show that the value of the variable (Workshop Facility) has a perception at a low level, namely 7 (35%) students, the variable (K3 Knowledge) can illustrate that students' perception of K3 Knowledge is very high where as many as 7 (35%) students have this perception This illustrates that students' understanding of K3 Knowledge is very good. Furthermore, the Y variable (Learning Outcomes) shows a high percentage value it can concluded that most students have a good understanding of K3 Knowledge.

Effect of Hydrophobic Surface on Thermoelectric Cooling-Based Atmospheric Water Generator

Abdillah Irfan — 2025-05-31

Water has a very important role in everyday life. Apart from humans, other living things also depend on water to survive. But there are still many areas in the world even in Indonesia still experiencing drought or clean water crisis. Therefore, new innovations are needed in producing water. One of the innovations is the atmospheric water generator (AWG) which utilizes the formation of water from air or condensation. The AWG in this research uses thermoelectricity as a cold source. Where thermoelectricity is less noisy, easy to obtain and assemble into a system, has a long service life without requiring maintenance. But thermoelectrics have disadvantages where cooling on thermoelectrics is less efficient. So to overcome this, I as the author use a hydrophobic surface as a condensation surface where it can accelerate condensation and increase the amount of water produced. In this study to see the comparison, tests were carried out using various types and surface areas.

Analysis Thermal for Disc Brake Using Finite Element Analysis (FEA)

Alparis Nico Putra Utama — 2025-05-31

Traffic accidents are one of the highest causes of death in Indonesia. One of the factors traffic accidents is caused by vehicles, in this case the braking system. Brakes are a device on a vehicle that functions to reduce the speed by applying friction. The main feature in the braking system is heat dissipation. If the brake overheating, the effectiveness of the braking system will be reduced. In general, there are two types of brakes, but in modern vehicles disc brake more used. In this study, various types of disc brakes will be tested. The designs tested are solid disc brakes, drilled-type disc brakes, and grooved-type disc brakes. The aim of research for determine the most optimal disc brake design. The temperature value on the surface of the disc brake will be measure. The Finite Element Analysis (FEA) method is used in this study. The validation process is carried out by comparing analytical result and Finite Element Analysis result on solid disc brakes. The speed before braking is 60 km / h. Material used on disc brake is grey cast iron. In the simulation process using Finite Element Analysis, the mesh size used is 3 mm and the number of elements is 255,244 elements. After the analysis was carried out, the temperature value in the grooved-type disc brake design was the smallest value than another with a maximum temperature of 143.56 ºC during braking. Thus, based on the results obtained, the grooved-type disc brake tends to be more optimal.

The Corelation Of Workshop Facilities To The Academic Achievement Of Eleventh Students Welding Engineering In Smaw Subjects Of SMK Negeri 1 Sumatera Barat

Reza Ramadhan Prabulingga — 2025-05-31

The quality of school education is driven by several factors. These factors encompass school-related elements, pedagogical approaches, learning processes, environmental influences, learning facilities, and the allocation of learning time. It is evident that facilities and infrastructure represent a significant factor in the achievement of students. At SMK Negeri 1 West Sumatra, the Shielded Metal Arc Welding technique subject is used as the criterion for the completion of class 11 students. However, observations indicated that student academic outcomes were not ma11mized. This study explores the correlation between the availability of workshop infrastructure and the academic performance of Class 11 students enrolled in the SMAW (Shielded Metal Arc Welding) technique at SMK Negeri 1 West Sumatra. The investigation employs a correlational method to analyse the data. This study's population comprises 25 students enrolled in the 11th grade Welding Engineering programme, who utilise the Total Sampling Technique. The findings of the product moment correlation analysis demonstrate that the calculated r value of 0.595 exceeds the r table value of 0.396. It is evident that, with a statistical significance at p = 0.001, lower than 0.05, the alternative hypothesis (Ha) is confirmed. Considering the study’s findings, the alternative hypothesis (Ha) is accepted, signifying a robust correlation between workshop facilities and learning achievement. The findings of the analysis yielded a coefficient of determination of 35.4%, indicating that the impact of workshop facilities on student learning achievement is 35.4%. Conversely, a residual of 64.6% is attributed to external factors that were not considered in the study.

Solar Home System Plant Using A Combination of DVD and Solar Panel

Kresna Adi Prasetya — 2025-05-31

Indonesia is a tropical country that has great potential for harnessing and managing solar energy. At present, the technology of converting solar energy into electrical energy such as solar cells still has weaknesses in terms of cost. Therefore, this study aims to test the potential of solar energy by creating a solar home system plant using DVD and Zener diode. This solar home system plant using DVD has the advantage of using low cost and the power generated can be said to be sufficient. In addition, this product can be used as a substitute for solar cells if properly applied. This study uses an experimental method in a quantitative approach. In this study, the independent variable is the structure of the solar panel while the dependent variable is the amount of energy read by the voltmeter. This study uses the photoelectric principle. Where photoelectricity is an electron released from the surface of an object exposed to light. This study was carried out by looking at how much power could be generated by DVD and Zener diode. The results showed that DVD and Zener diode can generate electrical energy, but the results are still too small and a large number of DVDs are needed to generate more energy. So it can be concluded that DVD still cannot replace solar panels, but can be used as a tool to maintain the stability of solar panels.

Analysis of Musculoskeletal Disorders Among Prototype Vehicle Drivers Using the Nordic Body Map Method

Farid Khairul — 2025-05-31

The depletion of fossil energy reserves, especially oil and natural gas, has driven innovations in energy-efficient vehicles, including through the Energy-Efficient Car Contest (KMHE). In developing prototype cars for this competition, driver ergonomics is often overlooked. This study aims to analyze musculoskeletal complaints experienced by prototype car drivers from the Faculty of Engineering at UNP. The main instrument used was the Nordic Body Map (NBM) questionnaire, administered to three drivers after they performed a 20-minute static driving simulation. The collected data were analyzed and categorized based on complaint levels. The results showed that the most frequent complaints occurred in the lower back (score 12), followed by the lower neck, buttocks, and hips (score 11). The average overall score was 71.67, indicating a high-risk category. The highest individual score was 89 (Driver 3), and the lowest was 62 (Driver 1). These complaints were caused by the absence of an ergonomic driver seat in the prototype car. The study concluded that the current cockpit design is not ergonomically adequate, posing a risk of injury. Therefore, it is recommended that the design team immediately create a more upright driver seat with thigh support to enhance comfort and reduce musculoskeletal complaints.

Analysis Of The Development Of The Problem Project-Based Learning Model In Science Education

Fina Arfianti — 2025-06-04

Science education in schools faces various challenges, such as the dominance of teacher-centered lecture methods, a lack of integration between theory and practice, and limited learning facilities. These issues hinder students from developing critical thinking, collaboration, and adaptability to modern demands. This study aims to develop a Problem-Project Based Learning (P2BL) model as a solution to address these challenges. The model integrates the strengths of Problem-Based Learning (PBL) and Project-Based Learning (PjBL) to create contextual, practical learning experiences that encourage critical thinking among students. A Research and Development (R&D) approach with the ADDIE framework is employed to ensure the systematic development of the model. The P2BL model consists of five main components: syntax, reaction principles, social system, support system, and instructional as well as accompanying impacts. The syntax of this model includes stages such as problem definition, experimentation, planning, presentation, and evaluation, supported by multi-directional interactions between instructors and students, as well as collaboration among students. The research findings indicate that implementing the P2BL model enhances academic abilities, practical skills, and the development of attitudes such as teamwork, responsibility, and time management. With its relevance to the demands of the Industrial Revolution 4.0 era, the P2BL model offers a more interactive, effective, and adaptive learning alternative to improve the quality of Science education in schools.