bluuebunny/crossref_metadata_2025_split huggingface dataset:
Non-destructive test inspection of gas metal arc welding products with clamp and heat sink treatment on low carbon steel
Authors: Wibowo H , Karyono S , Prasetya T A , Nugroho BA 
Published: December 2020

Abstract
Efforts to reduce the level of distortion by welding treatment need to be done, but must consider the quality of the weld, especially the weld joint area. This study aims to examine non-destructive test (NDT) on welded objects with clamp and heat sink treatment to determine the level of weld perfection and detect welding defects in order to ensure weld quality. This research was conducted with 4 welding treatment designs, include: as welded, 4-point clamp treatment (4Clamp), liquid nitrogen cooling (HS-N2) heat sink treatment, and flowing water-cooling (HS-H2O) heat sink treatment. The results showed that based on the visual test of the welding on as welded condition, 4-points clamp, and flowing water cooling heat sink treatment decided “accepted”, while the heat sink treatment with liquid nitrogen did not pass the test and decided “rejected”. The dye penetrant test results of the HS-N2 treatment detected cracks at the end of the weld surface caused by a decreasing of heat input due to the HS-N2 treatment.
Analysis of quality student practice results in shielded metal arc welding
Authors: Hargiyarto P , Syauqi K , Sugiyono S , Ardian A , Sianipar S , Nadjib LA 
Published: December 2020

Abstract
This study aims to describe and determine the breakdown level of the V Groove welding results of students in Shielded Metal Arc Welding practice in the 3G (Vertical Up) position based on the American Welding Society standards. This study uses a quantitative descriptive research approach to describe the quality of the welding results. The collecting data in this study uses a visual assessment checklist based on AWS standards. The research conduct in a fabrication workshop at, Department of Mechanical Engineering Education, Faculty of Engineering, Yogyakarta State University. The data analysis technique was done by visually assessing students’ welding results and averaging them then describing them. The number of samples from this study were all training participants totaling 18 students. The results of this study indicate that: overall, the pass rate of students in welding the V groove connection in the 3G position SMAW practice is still meager, from a total of 18 students, none of them passed. Most students did not pass welding in the irregular bead, free from arc stray and spatter, undercut material, weld profile, and crater cross-section. The cause of student failures is due to a lack of understanding of how to avoid welding defects.
Analysis of student satisfaction of e-learning using the end-user computing satisfaction method during the Covid-19 pandemic
Authors: Prasetya T A , Harjanto C T , Setiyawan A 
Published: December 2020

Abstract
The government’s physical distancing policy to prevent transmission of the covid19 virus caused changes in learning patterns from face-to-face learning to distance education. The application of distance education at Universitas Negeri Yogyakarta is one of them through e-learning. Measurement of the level of e-learning user satisfaction is an assessment of the success of e-learning itself. The method used to measure students’ level of satisfaction using e-learning is End-User Computing Satisfaction (EUCS). EUCS has five indicators, namely, Content, Accuracy, Format, Ease of Use, and Timelines. The research sample was taken using a random sampling technique. The data collection technique was carried out using a questionnaire. Data analysis uses descriptive statistical analysis and inferential statistical analysis. Based on the analysis results, the content evaluation value is 4.0300, the accuracy evaluation value is 4.0200, the evaluation value is 4.2550, the evaluation value for easy use is 4.0288, and the evaluation value for timeliness is 4.0900. The overall analysis results showed that the students were satisfied with the e-learning course in vocational learning media.
Effect of contextual approach to improve competence of engineering design and manufacturing in vocational high school 2 Depok Sleman
Authors: Ngadiyono Y , Steven S , Fikrie A , Egiansyah GYF 
Published: December 2020

Abstract
The aim of this research was designed to determine the effect of contextual approaches on Manufacturing and Drawing Engineering competencies in class XII students of the Metal Fabrication and Manufacturing Engineering Vocational Engineering 2 Depok Sleman and improving the competency of the Manufacturing Image Engineering course by using the contextual approach of the XII grade students of the Metal Fabrication and Manufacturing Engineering expertise program at Vocational High School 2 Depok. This research is classroom action research. Data had collected in August 2019. Subjects were 29 students in class XII TFLM A. Data collection techniques used were observation, competency assessment, and documentation. The assessment technique applied in the study uses an evaluation based on the results of the student job sheet assignments. The results of this classroom action research are applying a contextual approach to improve student learning outcomes. The increase that can occur could be seen from the results of the 1st and 2nd cycle research. Increased value of cycle one by 3.4%. In the second cycle was 5.8%.
Development of computer aided manufacturing learning module for Magelang vocational high school students
Authors: Wijanartka B S , Pramono Z H , Fikrie A , Kassyaf K M 
Published: December 2020

Abstract
This study aims to develop computer aided manufacturing (CAM) learning modules for students, find out the feasibility of learning modules for students, and find out student assessments of modules. The research method used is 4D (Define, Design, Develompent, Dissemination). Data collection using a questionnaire. The results showed the feasibility of teaching materials by material experts who get a percentage of 84.17% with a very decent category, from CNC learning practitioners get a percentage of 85.83% with a very feasible outcome category, and assessment of students in class XII machining at Vocational High School 1 Magelang obtained a percentage of 85.28% which is included in the very feasible category. Based on the results of the assessment by material experts, CNC learning practitioners, and student assessments, this module is included as a very feasible use as teaching material for vocational students.
Online learning readiness during the Covid-19 pandemic
Authors: Widodo SFA , Wibowo YE , Wagiran W 
Published: December 2020

Abstract
Online learning is one of the main alternatives to learning during the Covid-19 pandemic and the new normal period. This learning has been implemented at various levels of education with various platforms. Various studies have shown that online learning has varying effectiveness at all levels and types of education. The implementation of online learning is not supported by an in-depth study of student readiness. Student readiness in online learning can be assessed comprehensively from the aspects of equipment capability, technology skills, self-directed learning skills, motivation, and perceived usefulness
Development of teaching materials for gas metal arc welding (gmaw) practice courses
Authors: Sudiyono  , Dwi Nur Indriawan Musyono Ari , Sunyoto  , Mustamil Khoiron Ahmad 
Published: December 2020

Abstract
In improving the quality of human resources, one of which lies in the quality of quality education. In this case, education has a very important meaning in human life, both in the life of individuals, nations, and countries. Therefore education must be implemented as well as possible so that it is following the objectives that have been planned. The objectives to be achieved from this study are to produce teaching materials for GMAW welding practice materials, produce teaching materials that are suitable for use in GMAW welding practices, and provide an evaluation of the effectiveness of using GMAW welding practice teaching materials after being used in learning. This research method uses the Borg and Gall development research method which is simplified into four steps, namely modified (simplified) into 4 steps consisting of: (1) preliminary study; (2) product development and validation; (3) limited trial; and (4) the final product. The type of research used in this research is the development of teaching materials in the form of practice modules, job sheets, and evaluation sheets in the GMAW welding practice course. Based on the research results, the researcher can conclude that the development of teaching materials for GMAW welding practices has been implemented properly. The revised results from the experts have been applied to the modules made so that the modules can be used properly by students.
Effect grain size of sand to mould’s permeability & compressive strength, and casting products
Authors: Aminnudin  , Rohmat Aji Pradana Yanuar , Ariono Angga 
Published: December 2020

Abstract
Sand for mould must comply with requirements for casting moulding, this sand mould must have enough permeability and strength. Permeability is the capability to remove air from the mould cavity. Sand from volcanoes is very easy to get and costs less than silica sand. One of the sands that can be used is Mount Semeru, which has only been used as a building material. The use of volcanic sand has been using clay as a binder. In order to improve the quality of the mould, in this research, we was carried out using phenolic resins as a binder. The sand used in this research is sand from Semeru Mountain which is obtained from the Pasirian area of Lumajang Regency. The sand sizes for the mould are 20, 40 and 60 mesh, the sand sizes for the mould are 20, 40 and 60 mesh. The sand binder used is phenolic resin mixed with water with a ratio of 2 resins to 1 water. Permeability testing uses a sand mould specimen in the form of a tube in accordance with SNI 15-0312-1989 standards. The highest permeability occurs in sand moulds with a mesh grain sand 20 (321.67 cm3/minute), The highest compressive strength is found in moulds with 60 mesh (4.13 MPa).
Increase the problem solving ability through improved prior knowledge
Authors: Komarudin  , Marji  , Sutadji Eddy , Widiyanti  
Published: December 2020

Abstract
This study examines the contribution of prior knowledge to improving problem-solving in learning using interactive multimedia. This research is an experimental quantitative study with a sample of 38 people. The implementation process begins with giving a pretest, giving material by the researcher, practicing by the participants using an EMS (engine management system), and ending with providing a post-test. The research uses EMS as a result of the development of existing media on campus. Analysis of research data is using an independent sample t-test. The work shows that there is a significant contribution of prior knowledge to problem-solving. This study shows that prior knowledge is essential to increase problem-solving abilities. Problem-solving is an essential ability in facing the industrial 4.0 era. Prior knowledge is the overall competence of students as a result of learning activities before following the next learning process.
The influence of audio visual media on student interest: automotive clutch power train system
Authors: Suyitno  , Primartadi Aci , Jatmoko Dwi , Nurtanto Muhmamad , Ratnawati Dianna 
Published: December 2020

Abstract
This study aims to 1) Know the procedure for developing learning media based on audio-visual coupling system . 2) To find out the learning interest of students in the fourth semester of automotive engineering education at the Muhammadiyah University of Purworejo. 3) Make it easier for non-vocational students to understand the material of the power transfer system, especially in the 4 semester coupling system lessons at the Muhammadiyah University of Purworejo. 4) Increase students’ interest in learning about the system material transfer of personnel, especially in the clutch system lesson in semester 4 of Muhammadiyah University of Purworejo. This study uses Research and Development (R & D) with subject research undertaken is the semester students of 4th grade B Automotive Engineering Education Purworejo Muhammadiyah University as many as 39 students. The data was collected using a questionnaire to determine the feasibility of the medium used using the student response sheet and the student learning interest questionnaire using the student learning interest questionnaire. From the results of the study, it shows that : 1) the procedure for developing learning media for the coupling audio visual system includes searching for potential problems, data collection, product design, design validation, design improvement, product testing, product testing, usage trials and product revisions . 2) media instructional audio visual system coupling system suitable for use in a medium of learning. This can be evidenced from media experts who showed a mean score - an average of 3, 1 . Validation from experts who showed an average score of 3.4. The learning media for the coupling system audio-visual system also meets the quality criteria of learning media. This is shown by the student response, namely the small group trial obtaining an average score of 3.43 which includes 5 students and the large group trial obtaining an average score of 3.13. 3) In student interest in learning, it shows that with the audio visual learning media the coupling system can increase the learning interest of 4th semester students of class B at the Muhammadiyah University of Purworejo.
Project Based Learning Model to Increase the Competency of Automotive Engineering Teachers Candidates
Authors: Wakid M , Usman T , Sulistyo B 
Published: December 2020

Abstract
This study aims to produce a Project-Based Learning model for vocational education in practical learning in Automotive field courses. The product of this research is the PjBL learning model in the practical course of Vehicle Body Technology. In this research is carried out through the stages of preliminary studies, model development, model validation, and implementation. The research was conducted at the Automotive Workshop of the Automotive Engineering Department, FT-UNY. The subjects of this study were lecturers and students of the Automotive Engineering Department who took practical courses in Vehicle Body Technology. Model feasibility tests were carried out by practitioners from the body repair and painting industry and Vocational School teachers on the Automotive Body Engineering spectrum. This development research was conducted in February until July 2019. The product of this research is in the form of a PjBL model for vocational education in the automotive sector that has been assessed and declared fit for use as a learning model in the automotive field of vocational education. Student responses to the implementation of PjBL learning in the Vehicle Body Technology course are also very good so that this learning model is in the very feasible category.
Vocational High School Infrastructure Conditions and The Challenges in Facing The Era of Literation and Industrial Revolution 4.0
Authors: Pambayun N A Y , Sofyan H , Haryana K 
Published: December 2020

Abstract
Infrastructure is an important component to support the learning operational in Vocational High Schools (SMK). This is a challenge for Vocational High Schools to manage their infrastructure so that they can keep up with the developments of technology and information. This study aims to: 1) determine the condition of the infrastructure and facilities of lightweight vehicle engineering of Vocational High Schools (SMK TKR) in Yogyakarta; and 2) describe the challenges of SMK, especially SMK TKR in the field of infrastructure to face the era of literaction and industrial revolution 4.0. This research is a quantitative research with survey method and literature review. The subject of this research is the Head of TKR Department or the Head of TKR workshop from 10 State and Private Vocational Schools in Yogyakarta. Data were collected by questionnaire and analyzed using descriptive analysis techniques. The results showed: 1) There are still infrastructure facilities at SMK TKR in Yogyakarta that have not met the demands of Indonesia Minister of Education Regulation No. 40, 2008 and the demands of the Curriculum 2013 syllabus; and 2) Infrastructure and facilities at SMK TKR is very difficult to follow the technological advances responsively, because technology is developing very quickly. Collaboration with the industry and the use of technology information in learning process are important to resolve the infrastructure limitation in SMK TKR.
Multiple Sensing Method Using Moving Average Filter for Automotive Ultrasonic Sensor
Authors: Prasetyono A P , Adiyasa I W , Yudianto A , Agit S N K 
Published: December 2020

Abstract
Distance sensing on vehicles is a trend in the development of autonomous cars. So that the use of proximity sensors such as ultrasonic and infrared, is very important. This research paper focuses on developing a reading of 4 ultrasonic sensors simultaneously. Where the reading method is done using 4 pin echo and 4 pins trigger and 1 pin echo with 4 pin triggers. In order for better reading, the programming algorithm for each method is integrated with the moving average filter. The use of this filter is able to correct the noise that occurs when reading the distance. The test was carried out at the computer simulation stage using a microcontroller. The final results of the study obtained a very small reading error.
Developing Module of Conventional Vehicle Fuel Systems
Authors: Arif M , Sukaswanto  , Nugraha B S , Fatah A 
Published: December 2020

Abstract
This study aims to (1) produce a Grade XI Conventional Fuel System Module Product at SMK Muh 1 Bambanglipuro; (2) validate the feasibility of a conventional fuel system module in SMK Muh 1 Bambanglipuro. This study is a research and development (R & D), conducted at SMK Muh 1 Bambanglipuro. The approach refer to the ADDIE model consists of 5 stages; (1) analysis; (2) design; (3) development; (4) implementation; (5) evaluations. Module design validation consists of two aspects: material validation and media validation. The study involved 24 students of Grade XI of Light Vehicle Engineering (LVE) class as the product users. Data collection is carried out using a questionnaire. The data analysis technique is descriptive quantitative, confirmed to the feasibility scale table. After validation and some revisions, the final product of the module packed in 21 x 14.8 cm paper size, consists of 81 pages. The feasibility assessment of the module product score is 78.34%, considered as very feasible.
Vocational skills learning model strategies during covid-19
Authors: Kholifah Nur , Irwanto Irwanto , Ramdani Sulaeman Deni , Nurtanto Muhammad 
Published: December 2020

Abstract
The focus of this research is the skills learning model used by teachers, especially those who teach practical subjects. In accordance with the purpose of vocational education which says that graduates from vocational high schools are graduates who are ready to work in the industrial and business world. The purpose of this study is to describe the skills learning model strategy used by teachers when Covid-19 hit Indonesia. The research method used is a qualitative research method with a descriptive approach. Collecting data using observation, interviews, and documentation. The results obtained are: (1) teachers who teach subjects related to the practice of getting obstacles and difficulties because online learning is very influential on internet networks, (2) teachers only use online learning models using video learning media, so that the teacher only sends a learning link to students via WhatsApp Class group, (3) some students experience difficulties in learning online because the internet signal or network is not always good. (4) with the covid-19 all learning in schools is required online, so that teachers must be proficient in using technology.
The development of a pocket book as a learning resource at vocational high school
Authors: Lestari Wilujeng , Komariah Kokom 
Published: December 2020

Abstract
The change of education curriculum in Indonesia affects school subjects, including those taught in vocational high school’s culinary department. The addition of the fusion food material in the learning syllabus demands teachers to seek various learning resources. This study aimed to develop a pocket book on fusion food as a learning resource for vocational high school students. This was a R&D (research and development) which specifically used the 4D development model (define, design, develop, and disseminate). The research participants involved experts on learning material and media, as well as Grade 12 culinary students from state vocational high school SMKN 1 Kalasan. The data collection technique included observation, interviews, document studies, and a survey, while the data analysis technique was descriptive qualitative. The findings show that the feasibility of the fusion food pocket book is deemed very feasible as a learning resource with the average score of 88.9% from the material experts, 99.1% from the media experts, and 82.3% from the students.
Development of integrated hardware-in-the-loop (hil) test bench anti-lock brake system (abs) instrument
Authors: Nauri I.M. , Ihwanudin M. , Sumarli  , Mindarta E.K. , Harly M. , Putra A.B. , Awanggapati B. , Ismail H. 
Published: December 2020

Abstract

Carrying out an Antilock Brake System (ABS) testing performance for ECU-ABS software development validation in real-time by an on-road test drive is challenging. Besides, it requires more time, cost, and effort. This research aims to develop a test bench device for ABS testing performance based on hardware in the loop (HIL). HIL-based ECU-ABS testing performance offers an approach that improves the validation process, and at the same time providing potential cost, time, and energy savings. To achieve this goal, this device is created through experimental development methods and a prototype is built consisting of input/output devices that can be set out and manipulated due to the desired real braking conditions. The result of the study is an ABS test performance device equipped with a data acquisition system (DAQ) hence the parameters which are working during the test can be read, harvested, and further analyzed for the development and improvement of the ABS. The design and prototyping process employ several software (i.e. MatLab, Proteus, Ansys, C++ Compiler, and Visual Basic), hardware (asynchrony motor, speed sensors, hydraulic actuator, PCI-Card LabView, PC, LCD monitor, keyboard, printer), frame structure and flywheel, calibration utility and test space that meets NASVA standards.
Toroidal variator with hydro-gas pressure mechanism for creating a holddown
Authors: Polyakov R N , Revkov A A , Shengping F , She L I 
Published: December 2020

Abstract
The article presents an analysis of the existing constructions of automatic shift gearboxes (automatic transmissions) in modern cars and describes a new construction based on a toroidal variator with a hydraulically variable holddown. There is a rationale that in comparison with the traditional automatic transmissions, a new one has smaller mass- dimensions with the same possibilities of transmitting smoothly variable torque from the engine to the car wheels. The innovation of the construction consists in the mechanism for pressing the intermediate disk of the variator to the friction surfaces due to the controlled hydraulic actuator and a membrane that eliminates bulky pressing linkage in a traditional construction of the toroidal variators.