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All Journal Jurnal Pendidikan Vokasi JPTK: Jurnal Pendidikan Teknologi dan Kejuruan Conference on Innovation and Application of Science and Technology (CIASTECH) ComTech: Computer, Mathematics and Engineering Applications BERNAS: Jurnal Pengabdian Kepada Masyarakat Jurnal Pendidikan Vokasi Otomotif Jurnal Pendidikan Teknik Sipil (JPTS) Automotive Experiences Prosiding Seminar Nasional Hasil Penelitian Sains, Teknik dan Aplikasi Industri Fakultas Teknik Universitas Lampung
Aan Yudianto
Universitas Negeri Yogyakarta
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Lightweight Design and Finite Element Analysis of Brake Lever for Motorcycle Application Agus Puji Prasetyono; Aan Yudianto; I Wayan Adiyasa
ComTech: Computer, Mathematics and Engineering Applications Vol. 14 No. 1 (2023): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v14i1.8604

Abstract

A lightweight component design contributes to the overall optimization of a system to be more effective and efficient. Then, it can lead to the contribution of a carbon footprint reduction. The research aimed to propose a novel lightweight brake lever design for motorcycle applications and numerically investigate its performance by comparing the proposed design with different utilized materials. The subject of the research was an optimized brake lever for motorcycle application. The materials used were aluminum alloy, structural steel, and titanium alloy. A Finite Element Method (FEM) analysis was employed to investigate the proposed brake lever design. Three proposed designs were introduced with the mass reduction in each optimization up to 50,9% of reduced mass. Maximum stress was observed on the most optimized design with a value of 297 MPa. The strain and total deformation were also investigated among the components. In the result, the stress-strain graph shows that the most optimized brake lever experiences the highest stress with the highest strain value. Furthermore, the highest safety factor is achieved with the utilization of titanium alloy, reaching the value of 6,28 for preliminary design and 3,1 for the most optimized component. However, the lightest component can be obtained using aluminum alloy.
Application of Multi-objective Adjoint-based Aerodynamic Optimisation on Generic Road Vehicle with Rear Spoiler Yudianto, Aan
Automotive Experiences Vol 7 No 1 (2024)
Publisher : Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.10577

Abstract

Finding possible solutions where there are multiple conflicting objectives to be simultaneously satisfied is a challenging situation. Multi-objective optimisation of a rear spoiler on a generic road vehicle model is carried out by using adjoint-based optimisation coupled with Computational Fluid Dynamics. The study aims to reduce the vehicle drag and increase vehicle downforce simultaneously by optimising the shape of the spoiler, by allowing the deformation to achieve the most optimised shape assuming no manufacturing constraint. The OpenFOAM software was used for the solver. A strategy for multi-objective optimisation was proposed by assigning appropriate objective function weight, leading to some possible solutions and Pareto front of the proposed design family. Five optimisation solutions of the non-dominated solution Pareto front resulting from the spoiler shape optimisation are presented, explaining the trade-off between conflicting drag and downforce objectives on the vehicle model. The baseline geometry of the simulation is in good agreement with the experimental measurement. The analysis of the shape changes in the proposed optimisation is deeply investigated in terms of the optimised geometry deformation, velocity contour comparison, recirculating region on the base, pressure coefficient comparison and stream-wise velocity component at the slant region of the model. The adjoint-based optimisation method in the presence study can handle multiple objective optimisations and generate possible optimised spoiler shapes to reduce drag and increase downforce. Free deformation of the shape yields in the unique shapes of the spoiler, enabling to manipulate of the base flow at the rear of the vehicle model.
The Contribution of Microteaching Achievements and Teaching Readiness to Teaching Practicum Achievements in The Civil Engineering and Planning Education Study Program Faculty of Engineering Yogyakarta State University Sibiani, Nur Izzi; Hariyanto, V Lilik; Yudianto, Aan
Jurnal Pendidikan Teknik Sipil Vol. 6 No. 1 (2024): Juni
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jpts.v6i1.70782

Abstract

Background: The main purpose of this study was to determine the contribution of micro teaching achievements and teaching readiness to teaching practicum achievements in the Civil Engineering and Planning Education Study Program at Faculty of Engineering, Yogyakarta State University.Methods: This research is an ex-post facto study. The population of this study was 90 students of the Civil Engineering and Planning Education Study Program, class of 2019, with a sample of 73 students. The data collection technique used a questionnaire and documentation methods. Data analysis techniques were carried out using descriptive statistics, prerequisite analysis tests, and multiple regression analysis.Results: The results of the study show that: 1) there is a positive and significant effect of micro teaching achievements to teaching practicum achievements with tcount > ttable (2.480 >1.993943) at a significance level of 5%, 2) there is a positive and significant effect of teaching readiness to teaching practicum achievements with tcount > ttable (25.871 > 1.993943) at a significance level of 5%, 3) there is a positive and significant effect of micro teaching achievements and teaching readiness together to teaching practicum achievements with R2 = 0.966; Fcount > Ftable (1009.222 >3.12576424) at a significance level of 5%. The relative contribution of micro teaching achievements is 7.296% and the effective contribution is 7.05%. The relative contribution of teaching readiness is 92.704% and the effective contribution is 89.58%.Conclusion: There is a positive and significant influence of Micro Teaching Achievements and Teaching Readiness on Teaching Practicum Achievements in the Civil Engineering and Planning Education Study Program with a contribution of 96.63%.
PELATIHAN PENGGUNAAN FASILITAS PRAKTIK JURUSAN TEKNIK KENDARAAN RINGAN DI SMK NEGERI SAPTOSARI GUNUNGKIDUL DAERAH ISTIMEWA YOGYAKARTA Gunadi, Gunadi; Sofyan, Herminarto; Yudianto, Aan
Jurnal Pendidikan Vokasi Otomotif Vol. 6 No. 1 (2023): (November)
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jpvo.v6i1.47497

Abstract

The demands of technological developments require educational institutions to update and equip practical facilities to support the achievement of graduate targets. This requires resources capable of operating and using these practice facilities. This Community Service Program aims to provide training on the use of student practice facilities in the form of Smoke Testers and Gas Analyzers to teachers and technicians of the Automotive Light Vehicle Engineering Department at SMK N Saptosari, Gunungkidul Regency, Special Region of Yogyakarta. With this training, it is hoped that teachers and employees will be able to use the equipment in accordance with procedures. The target audience for this activity are teachers and employees in the Automotive Light Vehicle Engineering Department at SMK N Saptosari. The method used in this activity is through exposure delivered by experts which is then followed by hands-on practical training activities in the use of Smoke Tester and Gas Analyzer tools. The indicator for achieving the objectives in this PPM activity is increasing the knowledge and understanding of the target audience about the use of practical facilities in the form of Smoke Tester and Gas Analyzer tools. The results of the evaluation conducted using a questionnaire showed that the training participants were very satisfied with the activities carried out and wished that these activities be carried out continuously.
KARAKTERISASI KUALITAS LASAN PADA BAHAN SERUPA AZ31B DENGAN PROSES MICRO-FRICTION STIR SPOT WELDING (µFSSW) UNTUK APLIKASI KENDARAAN Widyianto, Agus; Yudianto, Aan; Sofyan, Herminarto; Gunadi, Gunadi
Jurnal Pendidikan Vokasi Otomotif Vol. 5 No. 2 (2023): (Mei)
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jpvo.v5i2.60132

Abstract

Keberhasilan penerapan micro-friction stir spot welding (µFSSW) pada bahan AZ31B pada penelitian ini memiliki implikasi yang signifikan untuk aplikasi praktisnya di berbagai industri. Temuan penelitian menunjukkan bahwa teknik pengelasan ini dapat menghasilkan sambungan yang kokoh pada material AZ31B dengan ketebalan 0,3 mm dan 0,5 mm. Geometri pengelasan optimal diperoleh pada 500 milidetik dan 500 mikron, menghasilkan beban geser maksimum dan beban silang masing-masing sebesar 326 N dan 88 N. Studi ini juga meneliti sifat mekanik sambungan, termasuk kekerasannya, dan menganalisis struktur mikro material. Kekerasan material meningkat pada center stir zone (SZ), menandakan terbentuknya sambungan yang lebih kuat. SZ juga menunjukkan butiran yang lebih kecil dibandingkan dengan thermo-mechanically affected zone (TMAZ), menunjukkan bahwa teknik µFSSW memiliki dampak positif pada penyempurnaan butiran. Namun, heat-affected zone (HAZ) menunjukkan butiran yang terrekristalisasi sebagian. Secara keseluruhan, temuan ini menunjukkan potensi µFSSW sebagai teknik pengelasan yang andal untuk material AZ31B, dengan sifat mekanik yang menjanjikan dan struktur mikro yang lebih baik. Penelitian lebih lanjut dapat mengeksplorasi penerapannya pada bahan dan industri lain, serta mengoptimalkan parameter pengelasan untuk hasil yang lebih baik.
Self-directed learning readiness of automotive body repair student to face 4.0 learning system Pratama, Atmoko Putra; Sofyan, Herminarto; Yudianto, Aan
Jurnal Pendidikan Vokasi Vol. 12 No. 1 (2022): February
Publisher : ADGVI & Graduate School of Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jpv.v12i1.27447

Abstract

This study aims to reveal: 1.) Readiness of independent learning of vocational students in the department of automotive body repair to face 4.0 learning systems; and 2.) Supporting and inhibiting factors of students in implementing a 4.0 learning system. This study uses a descriptive-analytical method with a case study approach. The subject consisted of students and teachers of vocational high school majoring in automotive body repair. Data collection techniques in this study were observation, interviews, and questionnaires. The research was conducted at SMK N 2 Depok Sleman, automotive body repair engineering department. 30 respondents filled out the questionnaire to assess the level of self-directed learning readiness of respondents according to SDLR. The readiness level of self-directed learning is divided into three categories: low, medium, and high. The results of this study are (1) Readiness of students majoring in automotive body repair techniques in the face of learning systems 4.0 is included in the medium category, and (2) The supporting and inhibiting factors found in dealing with learning systems 4.0 come from internal and external of the student learning environment.
Co-Authors Afri Yudantoko Afri Yudantoko Agus Puji Prasetyono Agus Widyianto Arya Ferdian Ramadhan Putra Dhany Arie Saputra Dias Sumbaga Wicaksana FANDI ACHMAD Formuji Romansyah Gunadi Gunadi Gunadi Hanggar Setya Novanto Herminarto Sofyan I Gusti Nyoman Tri Jayendra I Kadek Bagus Suryanata I Made Gede Sunarya I Wayan Adiyasa Kaevian Nafa Bangunmas Kholis, Agit Sakti Nur Li, Peixuan M.Cs S.Kom I Made Agus Wirawan . Moch. Solikin, Moch. Muhammad Syahrul Akmal Muhammad Syahrul Akmal Mukhamad Nur Rochim Nofa Rindo Peixuan Li Pratama, Atmoko Putra Riski Rido Utomo Rizki Rido Utomo Sibiani, Nur Izzi Solly Aryza Supiningsih V. Lilik Hariyanto Yosef Budiman