Augmented Reality-Based Simulation for Project Based Learning-Troubleshooting (PjBL-T) on Automotive Chassis Course Hanapi Hasan, Wakhinuddin Simatupang, Wawan Purwanto, M Giatman, Riki Mukhaiyar, et al. International Journal of Information and Education Technology, 2026 This study integrates an Augmented Reality (AR) simulation into a Project-Based Learning–Troubleshooting (PjBL-T) model for an automotive chassis course to strengthen students’ diagnostic and problem-solving skills. Using a developmental research design, we applied a 4D sequence—Define including needs analysis and task/specification mapping, Design including AR storyboard, PjBL-T syntax alignment, instrument blueprints, Develop including prototype builds, expert validation, small-group try-out, and Disseminate including field implementation and refinement. Participants were purposively sampled from intact classes enrolled in the course which are one PjBL-T+AR cohort and a comparison cohort using conventional media. The AR module using Unity engine with Vuforia SDK delivered manipulable 3D models of suspension, steering, and braking systems and included parameterized virtual-fault scenarios for guided troubleshooting. Data were gathered with a diagnostic-accuracy rubric, a problem-solving performance rubric, a concept comprehension test, and a student engagement survey (Likert). Analyses included content validity, reliability checks, and inferential tests. Results show higher engagement, deeper conceptual understanding, and improved diagnostic accuracy for the PjBL-T+AR cohort relative to baseline and the comparison group. The model is scalable because it (i) runs on widely available Android smartphones/tablets with offline assets, (ii) uses modular, reusable fault libraries and glTF/FBX 3D packages that map directly to each PjBL-T stage, and (iii) provides templated authoring and Learning Management System (LMS) integration, enabling rapid replication across courses and institutions without specialized labs.
Trends in anti-UV films or composites: A bibliometric study Dieter Rahmadiawan, Thiago F. Santos, Navid Aslfattahi, Shih-Chen Shi, Eko Indrawan, et al. Teknomekanik, 2025 Anti-UV films and composites play a critical role in protecting materials from ultraviolet-induced degradation, which can weaken polymers, reduce product lifespan, and compromise performance in sectors such as food packaging, outdoor coatings, and biomedical devices. The growing emphasis on sustainability and the need for environmentally friendly protective materials have further accelerated research on UV-shielding technologies that incorporate biopolymers, multifunctional additives, and renewable resources. This study presents a comprehensive bibliometric analysis of global research on anti-UV films and composites over the period 2014–2024. Data were retrieved from the Scopus database and analyzed using Bibliometrix (R package) and VOSviewer were employed to analyze publication patterns, map keyword networks, and visualize thematic evolution, as these tools enable robust quantitative and structural mapping of large bibliographic datasets. Three dominant thematic clusters were identified: (i) nanoparticle-based UV shielding using inorganic fillers such as ZnO and TiO₂, (ii) multifunctional films integrating UV protection with antibacterial and antioxidant properties, and (iii) biopolymer-based matrices emphasizing mechanical durability and environmental sustainability. These clusters highlight the convergence of performance, sustainability, and multifunctionality as key drivers shaping current research directions. Despite significant progress, the analysis reveals limited attention to scalability, industrial compatibility, and long-term performance evaluation. The findings underscore the need for future research to incorporate pilot-scale processing, life-cycle assessments, and interdisciplinary collaboration to bridge the gap between laboratory formulations and commercial implementation. Overall, this bibliometric study provides a consolidated understanding of the evolution and research landscape of anti-UV films and composites.
AI-PBL Framework: Innovative Problem Based Learning Model Supported by Artificial Intelligence Technology Budi Syahri, Syahril Syahril, Refdinal Refdinal, Eko Indrawan, Afriza Media, et al. Data and Metadata, 2025 Introduction: This study aims to develop a Problem-Based Learning (PBL) framework integrated with Artificial Intelligence (AI) technology to enhance the critical thinking skills of students in the Mechanical Engineering Study Program at Padang State University (UNP).Methods: A developmental research methodology based on the ADDIE framework was implemented in this study. The subjects involved were students enrolled in the Mechanical Engineering Department at UNP.Results: Validation results from seven experts indicated that the developed product falls into the valid category. In addition, the practicality test involving two lecturers and ten students yielded a score of 80.99%, placing it in the "highly practical" category. Regarding effectiveness, the t-test produced a value of 0.000, which is less than 0.05, indicating a statistically significant difference between the experimental and control groups.Conclusion: Based on the findings from the validation, practicality, and effectiveness assessments, the AI-supported PBL model is considered valid, highly practical, and effective in enhancing the critical thinking abilities of Mechanical Engineering students at UNP.
Enhanced Durability and Tribological Performance of Polyvinyl Alcohol/Layered Double Hydroxide/Tannic Acid Composites Under Repeated Swelling Cycles Dieter Rahmadiawan, Shih-Chen Shi, Wei-Ting Zhuang, Eko Indrawan, Yolli Fernanda, et al. Teknomekanik, 2024 In recent years, the exploration of polyvinyl alcohol (PVA) composites has garnered significant attention due to their versatility applications in aqueous environments. However, despite their promise, neat PVA exhibit limitations such as significant mechanical degradation under repeated swelling cycles. This study investigates the durability and tribological performance of polyvinyl alcohol (PVA) composites reinforced with nickel-iron layered double hydroxide (LDH) and tannic acid (TA) under repeated swelling cycles. Building on previous research that explored composite preparation and initial characterization, this research emphasizes the effects of cyclic swelling on wear resistance, friction behavior, and mechanical properties. Tribological tests were conducted to evaluate the coefficient of friction (COF) and wear rate before and after multiple swelling cycles, alongside tensile strength and strain measurements. The results revealed that the PVA/TA2/LDH2 composite, containing the highest additive content, exhibited the lowest wear rate of 11.52 × 10⁻⁵ mm³/Nm after 3 swelling cycles, demonstrating superior resistance to material degradation. Although PVA/TA2/LDH1 exhibited a slightly lower COF, its wear rate was higher due to reduced reinforcement. Compared to neat PVA, which showed a COF increase from 0.45 to 0.53, the PVA/LDH/TA composites retained their tribological stability, with only a marginal increase in COF and wear rate. Similarly, tensile strength of PVA/TA2/LDH2 decreased by only 11% after 3 cycles (from 33.3 MPa to 30 MPa), while neat PVA experienced a 25.5% reduction (from 30 MPa to 22.5 MPa). These findings highlight the potential of PVA/LDH/TA composites for applications in aqueous environments, offering significantly enhanced long-term performance and reliability.
Enhancing Learning Outcomes and Student Engagement: Integrating E-Learning Innovations into Problem-Based Higher Education Wagino Wagino, Hasan Maksum, Wawan Purwanto, Wakhinuddin Simatupang, Remon Lapisa, et al. International Journal of Interactive Mobile Technologies, 2024 With the rapid development of e-learning in higher education, this study explores the application of the problem-based learning (PBL) learning model in the e-learning ecosystem. This article explores the concept of participatory engagement in the e-learning ecosystem and integrates it with PBL theory through the use of ICT to support interaction and collaboration. The research method used is R&D learning models in the Heavy Equipment Technology course at Universitas Negeri Padang. The research findings should be interpreted cautiously due to limitations such as differences in contexts across various courses and factors related to technology implementation in the learning environment. The study results show that it can improve learning outcomes and students’ critical thinking skills. Specifically, 70% have implemented Bloom’s cognitive taxonomy Level C4 and above, aided by a self-reflection participation process that enables students to reflect on content, learning processes, and understanding through internal dialogue, generating new ideas and solutions. This is evidenced by the results of the Path Coefficients test with P-Value EE → LO 0.050 and PBL → LO 0.046, as well as Specific Indirect Effect EE → SPR → LO 0.003 and PBL → SPE → LO 0.047 where the value is ≤ 0.05. The implications include guidance for designing effective e-learning ecosystems and adaptive learning strategies in higher education. Future research is recommended to further explore the impact of this integration and develop more effective PBL models in diverse courses and other educational institutions.
Eco-Friendly Motorcycle Technology: Examining the Impact of Banana Peel-Based Catalytic Converters on CO Emissions with Biogasoline Fuel Wagino Wagino, Wawan Purwanto, Hendra Dani Saputra, Dwi Sudarno Putra, Eko Indrawan, et al. E3s Web of Conferences, 2024 This study aims to overcome the impact of increased air pollution due to an increase in the number of motor vehicles, especially due to dependence on fuel oil. The focus of research is the use of banana peels as activated carbon to reduce vehicle exhaust emissions in the hope of providing environmentally friendly alternative solutions to reduce air pollution, utilizing the adsorption properties of banana peels, and using biogasoline to overcome potential fuel crises. The experimental method was used to test the effect of an activated carbon catalytic converter made from banana peel with biogasoline fuel on motorcycle exhaust emissions. The test results showed that the use of catalytic converters with biogasoline fuel tended to reduce carbon monoxide (CO) levels by an average of 18%, compared to standard conditions with pertalite fuel. The results of the Paired Samples T-Test showed a strong correlation with a value of 0.967 and a significance level of 0.033, where a small value of 0.05 means statistically significant.
Kontribusi Lingkungan Keluarga dan Sekolah terhadap Minat Studi Ke Perguruan Tinggi Siswa Kelas XI Program Keahlian Teknik Pemesinan di SMK Negeri 1 Padang Tahun 2025 MI Febrian, E Indrawan, R Lapisa Journal of Golden Generation Education 2 (1), 610-623 , 2026 2026 Citations: 1
Pengaruh Penggunaan Media Pembelajaran Turbin Air Model Vortex terhadap Hasil Belajar Mahasiswa pada Mata Kuliah Mesin Konversi Energi DA Septiawan, D Yuvenda, E Indrawan Journal of Golden Generation Education 2 (1), 624-640 , 2026 2026
Augmented Reality-Based Simulation for Project Based Learning-Troubleshooting (PjBL-T) on Automotive Chassis Course H Hasan, W Simatupang, W Purwanto, M Giatman, R Mukhaiyar, ... International Journal of Information and Education Technology 16 (5) , 2026 2026
Trends in anti-UV films or composites: A bibliometric study D Rahmadiawan, TF Santos, N Aslfattahi, SC Shi, E Indrawan, ... Teknomekanik 8 (2), 252-268 , 2025 2025
Development of Interactive Media to Improve CNC Machine Malfunction Handling Skills of TU 3A Based on Immersive Gamification R Ramadhan, RE Wulansari, E Indrawan, D Novaliendry, DA Saputra Jurnal Penelitian Pendidikan IPA 11 (12), 1163-1171 , 2025 2025 Citations: 1
Innovation of Learning Media: Developing a Car Air Conditioning Trainer to Improve Student Performance in Vocational Physics and Engineering H Maksum, E Indrawan Jurnal Penelitian Pendidikan IPA 11 (10), 553-558 , 2025 2025
Penerapan Teknologi Squeezing Machine dan Pelatihan Pengolahan Santan untuk Meningkatkan Produksi C Andriani, B Rahim, J Jasman, E Indrawan, P Primawati, N Tasrif Jurnal Abdidas 6 (5), 595-607 , 2025 2025
Penerapan Inovasi Teknologi Pengupas dan Pemipil Jagung dalam Mendukung Efisiensi Usahatani B Rahim, J Jasman, C Andriani, E Indrawan, P Primawati, N Tasrif Jurnal Abdidas 6 (5), 573-577 , 2025 2025
Pelatihan Coconut Milk Untuk Makanan Home Industri Menggunakan Squeezing Machine C Andriani, B Rahim, YI Sari, J Jasman, E Indrawan, P Primawati ARSY: Jurnal Aplikasi Riset kepada Masyarakat 6 (3), 687-700 , 2025 2025
Penerapan Teknologi Tepat Guna pada Mesin Perajang Jerami untuk Meningkatkan Efisiensi Kerja Petani Padi Di Asam Kamba, Pesisir Selatan P Primawati, F Prasetya, J Jasman, B Rahim, E Indrawan, C Andriani ARSY: Jurnal Aplikasi Riset kepada Masyarakat 6 (3), 676-686 , 2025 2025
Penerapan Teknologi Tepat Guna pada Mesin Perajang Cassava untuk Produksi Keripik Renyah Di Asam Kamba, Pesisir Selatan J Jasman, R Hanifa, E Indrawan, B Rahim, C Andriani, P Primawati ARSY: Jurnal Aplikasi Riset kepada Masyarakat 6 (3), 647-660 , 2025 2025 Citations: 1
Penerapan Teknologi Tepat Guna pada Mesin Penggiling Kohe Kambing untuk Pembuatan Pupuk Tanaman di Asam Kamba, Pesisir Selatan E Indrawan, R Rifelino, F Efendi, J Jasman, B Rahim, C Andriani, ... ARSY: Jurnal Aplikasi Riset kepada Masyarakat 6 (3), 661-675 , 2025 2025
Effect of Problem Based Instruction (PBI) Model Assisted by Video on Learning Outcomes and Learning Motivation of Lathe Machining Engineering S Muzaki, F Prasetya, J Jasman, E Indrawan Jurnal Vokasi Mekanika (VoMek) 7 (3), 451-461 , 2025 2025
Factors Influencing Work Readiness and Student Satisfaction in Technical Education: A Systematic Review of Industry Collaboration, Certification, and Academic Engagement RD Koto, W Wagino, H Maksum, E Indrawan, M Giatman JETL (Journal of Education, Teaching and Learning) 10 , 2025 2025 Citations: 1
The Influence of Competence, Work Environment and Industrial Internships on Learning Effectiveness Through Teacher Performance in Vocational High Schools WA Savitri, H Maksum, D Irfan, E Indrawan JETL (Journal of Education, Teaching and Learning) 10 , 2025 2025
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 MA Fuadi, F Efendi, E Indrawan, RE Wulansari Jurnal Vokasi Mekanika (VoMek) 7 (2), 233-247 , 2025 2025
Analysis of factors influencing students' participation in national and international competitions PB Setia, A Kurniawan, E Indrawan, RE Wulansari, GK Kassymova Jurnal Pendidikan Teknologi Kejuruan 8 (1), 30-47 , 2025 2025 Citations: 1
Development of teaching modules on elective subjects S Silfiani, E Indrawan, B Syahri, B Rahim Mechanical Engineering Education Journal 2 (1), 161-168 , 2025 2025
Hubungan Motivasi dan Disiplin Belajar terhadap Hasil Belajar pada Mata Pelajaran Bubut Kelas XI Teknik Permesinan di SMK Dhuafa Padang I Ilham, RE Wulansari, P Purwantono, E Indrawan Jurnal Teknik Mesin, Industri, Elektro dan Informatika 4 (1), 210-221 , 2025 2025
AI-PBL Framework: Innovative Problem Based Learning Model Supported by Artificial Intelligence Technology B Syahri, E Indrawan Data and Metadata 4, 1116-1116 , 2025 2025 Citations: 1
MOST CITED SCHOLAR PUBLICATIONS
Review project based learning E Indrawan, N Jalinus, Syahril International Journal of Science and Research (IJSR) 8 (4), 1014-1018 , 2019 2019 Citations: 127
Enhancing Learning Outcomes and Student Engagement: Integrating E-Learning Innovations into Problem-Based Higher Education. W Wagino, H Maksum, W Purwanto, W Simatupang, R Lapisa, ... International Journal of Interactive Mobile Technologies 18 (10) , 2024 2024 Citations: 59
Project based learning in vocational technology education study of literature E Indrawan, N Jalinus, S Syahril International Journal of Scientific & Technology Research 9 (2), 2821-2825 , 2020 2020 Citations: 35
Evaluasi program praktik kerja lapangan dengan metode CIPP A Juri, H Maksum, W Purwanto, E Indrawan Jurnal Penelitian dan Pengembangan Pendidikan 5 (3), 323-328 , 2021 2021 Citations: 25
Tribological Properties of Aqueous Carboxymethyl Cellulose/Uncaria Gambir Extract as Novel Anti-Corrosion Water-Based Lubricant D Rahmadiawan, Z Fuadi, R Kurniawan, H Abral, F Ilhamsyah, A Arafat, ... Tribology in Industry 44 (4), 584 , 2022 2022 Citations: 24
Penerapan Model Pembelajaran Project Based Learning untuk Meningkatkan Hasil Belajar siswa KelasXI pada Mata Pelajaran Teknik Frais di SMK Negeri 1 Tanjung Raya IA Al Rasyid, A Aziz, P Purwantono, E Indrawan Jurnal Vokasi Mekanika (VoMek) 2 (4), 154-158 , 2020 2020 Citations: 22
Kontribusi Disiplin Belajar, Efikasi Diri dan Iklim Sekolah Terhadap Hasil Belajar Simulasi dan Komunikasi Digital Siswa M Mulyanto, W Purwanto, H Maksum, E Indrawan Jurnal Ilmiah Pendidikan dan Pembelajaran 5 (1), 85-94 , 2021 2021 Citations: 18
Pengaruh Sudut Potong dan Kecepatan Putaran Spindel Terhadap Kekasaran Permukaan pada Proses Bubut Mild Steel ST 37 A Yufrizal, E Indrawan, N Helmi, A Aziz, YA Putra INVOTEK: Jurnal Inovasi Vokasional Dan Teknologi 19 (2), 29-36 , 2019 2019 Citations: 18
Upaya Meningkatkan Hasil Belajar Siswa Menggunakan Model Pembelajaran Projek Based Learning K Evandel, E Indrawan, P Primawati, RE Wulansari YASIN 4, 58-65 , 2024 2024 Citations: 17
Hubungan Sikap Belajar dan Kebiasaan Belajar dengan Hasil Belajar Mata Pelajaran Teknologi Dasar Otomotif (TDO) F Fauzan, H Maksum, W Purwanto, E Indrawan Mimbar Ilmu 26 (1), 45-51 , 2021 2021 Citations: 17
Kontribusi Motivasi Kerja, Disiplin Kerja dan Pengembangan Karier Terhadap Kinerja Guru di SMK Negeri 1 Ranah Batahan T Rahmadona, H Maksum, E Indrawan, D Yuvenda Jurnal Ilmiah Pendidikan Profesi Guru 4 (3), 447-456 , 2021 2021 Citations: 13
Pengaruh Kondisi Ruang Kelas Terhadap Konsentrasi Belajar Siswa Mata Pelajaran PDTM di SMK Negeri 5 Padang J Andrianto, N Helmi, P Purwantono, E Indrawan Jurnal Vokasi Mekanika 2 (4), 147-153 , 2020 2020 Citations: 13
Improving Teacher’s In Developing & Analyzing Made Test Through Follow-Up At CNC Machine Training A Yufrizal, E Indrawan, A Aziz International Conference Asosiasi Pendidikan Teknologi dan Kejuruan … , 2018 2018 Citations: 12
Eco-Friendly Motorcycle Technology: Examining the Impact of Banana Peel-Based Catalytic Converters on CO Emissions with Biogasoline Fuel W Wagino, W Purwanto, HD Saputra, DS Putra, E Indrawan, B Rahim, ... E3S Web of Conferences 500, 03030 , 2024 2024 Citations: 11
Efektivitas penggunaan CNC simulator untuk meningkatkan hasil belajar pada pembelajaran teknik pemesinan NC/CNC dan CAM kelas XII SMK Negeri 1 Bukittinggi D Ardianto, A Yufrizal, N Helmi, E Indrawan Jurnal Vokasi Mekanika (VoMek) 3 (4), 62-67 , 2021 2021 Citations: 11
Upaya Meningkatkan Hasil Belajar Siswa Menggunakan Model Pembelajaran Projek Based Learning. Yasin, 4 (1), 58–65 K Evandel, E Indrawan, P Primawati, RE Wulansari 2024 Citations: 10
Optimasi Parameter Pemesinan Terhadap Kekasaran Permukaan Baja Ems 45 Pada Proses Finishing Mesin Bubut Konvensional IR Putra, E Indrawan, H Nurdin, B Syahri Jurnal Vokasi Mekanika (VoMek) 4 (2), 11-17 , 2022 2022 Citations: 10
Analisis Kualitas Geometri Mesin Bubut Maximat Super 11 E Indrawan, A Yufrizal, A Aziz, R Rifelino, MI Tawakal INVOTEK: Jurnal Inovasi Vokasional Dan Teknologi 20 (3), 71-80 , 2020 2020 Citations: 10
Effect of implementation demonstration method on students’ understanding and practical skills in Milling Machine RE Putra, E Indrawan, A Fortuna Journal of Engineering Researcher and Lecturer 4 (1), 35-45 , 2024 2024 Citations: 9
Analysis Comparative Feeding Variation to Quality Surface Processes Blocking Equipment of Ems Steel 45on Cnc Latheing Machine A Yufrizal, E Indrawan, N Helmi Journal of Physics: Conference Series 1387 (1), 012100 , 2019 2019 Citations: 9
