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All Journal Jurnal Teknik Mesin Cakrawala: Jurnal Pengabdian Masyarakat Global Panthera : Jurnal Ilmiah Pendidikan Sains dan Terapan Mars: Jurnal Teknik Mesin, Industri, Elektro dan Ilmu Komputer Panggung Kebaikan : Jurnal Pengabdian Sosial Jurnal Pendidikan Teknik Mesin
Ruben Bayu Kristiawan
Universitas Negeri Semarang
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Economics, Econometrics & Finance Education Engineering Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Mechanical Engineering Physics Social Sciences

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Rancang Bangun Alat Peraga Sistem Otomasi Pengisian Tangki Berbasis PLC Cahyanto, Septian Eko; Priyanto, Kaleb; Kurniadi, Ninda; Baihaqi, Setyo Bhahak Fendi; Gojandra, Farda Pega Libra; Kristiawan, Ruben Bayu; Enita, Sarai; Putra, Fajar Waskhita; Haikal Haikal
Mars : Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 2 No. 6 (2024): Desember : Mars : Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer
Publisher : Asosiasi Riset Teknik Elektro dan Informatika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/mars.v2i6.501

Abstract

Guna mendukung proses pembelajaran sistem otomasi di sebuah lembaga pendidikan dibutuhkan sebuah alat peraga yang mudah dipelajari dan dimengerti oleh mahasiswa. Tujuan pembuatan alat peraga ini agar peserta didik mengetahui dan dapat mengimplementasikan proses kerja sistem otomasi di industri menggunakan media yang disimulasikan dalam bentuk alat peraga. Alat peraga yang digunakan adalah integrasi PLC-HMI pada aplikasi pengisian tangki air. Alat peraga dirangkai dengan menggunakan PLC dan HMI merk Omron dengan software CX-Programmer dan NB-Designer. Rangkaian wiring alat peraga PLC-HMI disusun secara teratur dan sistematis agar mudah dibongkar pasang dan disesuaikan dengan diagram wiring oleh peserta didik. Program ladder pada software CX-Programmer didesain dengan menerapkan logika dasar, instruksi dan beberapa fungsi program yang sesuai dengan level kompetensi dasar pembelajaran PLC. Desain tampilan dan fungsi HMI dirancang menggunakan software NB-Designer yang diintegrasikan dengan program ladder, serta disesuaikan penggunaan alamat I/O nya. Wiring alat peraga berfungsi secara normal sehingga seluruh perangkat dapat terkoneksi dengan baik. Program ladder yang telah dirancang dapat berfungsi optimal dan tidak didapati error pada hasil kompilasi. Desain HMI dapat berfungsi secara efektif untuk monitoring proses maupun saat berfungsi sebagai programmable terminal. Secara keseluruhan hasil rancang bangun alat peraga simulasi sistem pengisian tangki air telah diuji coba dan berfungsi sesuai rancangan yang telah ditetapkan.
Peningkatan Kompetensi di Bidang Otomasi Industri Bagi Siswa SMK Jurusan Teknik Pemesinan Priyanto, Kaleb; Kurniadi, Ninda; Baihaqi, Setyo Bhahak Fendi; Gojandra, Farda Pega Libra; Kristiawan, Ruben Bayu; Cahyanto, Septian Eko; Enita, Sarai
Panggung Kebaikan : Jurnal Pengabdian Sosial Vol. 1 No. 4 (2024): November : Panggung Kebaikan : Jurnal Pengabdian Sosial
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62951/panggungkebaikan.v1i4.802

Abstract

The increasing demand for skilled human resources in the field of automation by the workforce has encouraged vocational education institutions to align their graduates' competencies with industry needs. Students must be equipped with up-to-date skills in line with technological advancements. Currently, the availability of technical expertise programs in vocational high schools (SMK) that include industrial automation curricula is very limited. This situation does not align with the growing industrial demand for SMK graduates with automation competencies, such as wiring and PLC programming skills. Based on these circumstances, this automation system training based on PLC was conducted as part of a community service program. The activity aimed to enhance the skillsets of vocational high school students, particularly in the machining engineering department. The training utilized PLC-based automation systems with Omron CP1E E30-DR-A controllers. The PLC logic programming was performed using CX-Programmer software. The results of the program showed that most participants could grasp the material well. Moreover, all participants gained new insights and skills in industrial automation systems, which serve as valuable support when entering the workforce.
Thermal and Flame Retardant Performance of Glass Fiber-Reinforced UPR Composites Modified with Boric Acid and Sodium Silicate Kristiawan, Ruben Bayu; Pramudi, Ganjar; Roni, Komar
Jurnal Teknik Mesin (Journal Of Mechanical Engineering) Vol 14, No 2 (2025)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/jtm.v14i2.33580

Abstract

This study investigates the effect of sodium silicate (Na₂SiO₃) and boric acid (BA) as flame-retardant additives in unsaturated polyester resin (UPR) reinforced with E-glass fibres. The fire performance of the composites was evaluated based on varying additive concentrations by % volume fraction, using standardised testing methods in burning rate (BR) with ASTM D 635-22. Results indicate that Na₂SiO₃ contributes to fire resistance by forming a thermally stable, glass-like barrier, while BA proves more effective by interrupting combustion reactions and generating protective boron oxide residue. Notably, the combination of Na₂SiO₃ and BA produced a synergistic effect, resulting in a significant reduction in burning rate. Thermogravimetric analysis (TGA) further confirmed the enhanced thermal stability of the composite, particularly in the NB10 formulation with 2% Na₂SiO₃ and 8% BA, which demonstrated the slowest degradation at elevated temperatures. These findings suggest that optimising the ratio of Na₂SiO₃ and BA yields high-performance, fire-retardant composites suitable for applications demanding superior fire resistance and thermal durability, such as electric vehicle safety components.
THE EFFECTIVENESS OF LEARNING MEDIA BASED ON YOUTUBE VIDEO TUTORIALS ON STUDENT LEARNING OUTCOMES PER WELDING PRACTICE Ainun Athar, Muhammad; Huda, Khoirul; Eko Cahyanto, Septian; Kriswanto, Kriswanto; Bayu Kristiawan, Ruben; TriLaksono, Galih
Jurnal Pendidikan Teknik Mesin Vol. 25 No. 1 (2025): June 2025
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jptm.v25i1.26687

Abstract

This study aims to analyze the effectiveness of YouTube-based video tutorial learning media in improving students' cognitive learning outcomes in Shielded Metal Arc Welding SMAW practice at SMK Negeri 4 Semarang. The background of this research is based on the limited use of contextual and engaging instructional media in vocational education, which leads to low conceptual understanding and applied skills among students. The research employed a quasi-experimental method with a pretest-posttest control group design. The sample consisted of 60 tenth-grade students from the Mechanical Engineering Expertise Program, selected through purposive sampling and divided into two groups: an experimental group that used YouTube-based instructional videos and a control group that applied conventional lecture methods. The research instrument comprised 20 validated multiple-choice questions. Data was analyzed using the Shapiro-Wilk normality test, Levene's homogeneity test, independent t-test, and N-Gain analysis to assess learning improvement. The results indicated a significant difference between the experimental and control groups p< 0.001, with the experimental group achieving an average post-test score of 84.50 and an N-Gain of 0.6100 high category. In contrast, the control group scored an average of 75.33 with an N-Gain of 0.4155 medium category. These findings suggest that using YouTube video tutorials as instructional media effectively enhances students' learning outcomes in welding practice while also creating a more contextual, visual, and student-centred learning process suited to the learning styles of vocational students. 
UTILIZING E-MODULES TO ENHANCE STUDENTS’ ACHIEVEMENT IN UNDERSTANDING SMAW WELDING DEFECT ANALYSIS AT SMK N 5 SEMARANG Muhamad Reza Wahyu Prasetyo; Muhammad Khumaedi; Kriswanto; Ruben Bayu Kristiawan; Tegar Oki Prasdika
Jurnal Pendidikan Teknik Mesin Vol. 25 No. 1 (2025): June 2025
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jptm.v25i1.28522

Abstract

Understanding welding defect analysis is a crucial competency in vocational welding education, especially in ensuring the quality and safety of welding outcomes. However, many students struggle to master this material due to the lack of interactive and adaptive learning media. This study aims to develop and implement an electronic module (e-module) to enhance student learning outcomes in Shielded Metal Arc Welding (SMAW) defect analysis at SMK N 5 Semarang. The research uses a Research and Development (R&D) approach based on the 4D model: Define, Design, Develop, and Disseminate. A one-group pre-test post-test design was used, involving 33 Grade XI Mechanical Engineering 2 students. The e-module was validated by experts and classified as "Valid" in terms of content, media, and assessments. Students' average scores increased from 40.61 in the pre-test to 78.64 in the post-test. Statistical analysis using the Wilcoxon Signed-Rank Test and paired t-test showed a significant difference (p < 0.001). The average N-Gain score was 0.63, indicating a moderate improvement. The results confirm that the e-module is both feasible and effective. It enhances students’ conceptual understanding and supports independent, technology-based learning aligned with the characteristics of digital-native learners.
Penerapan Model Pembelajaran Jigsaw Berbasis Project Based Learning dalam Meningkatkan Keterampilan dan Hasil Belajar Siswa SMK Prasojo, Krisna Tri; Huda, Khoirul; Kriswanto, Kriswanto; Kristiawan, Ruben Bayu; Laksono, Galih Tri
Panthera : Jurnal Ilmiah Pendidikan Sains dan Terapan Vol. 5 No. 3 (2025): July
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/panthera.v5i3.428

Abstract

This study aims to implement and test the effectiveness of the jigsaw learning model based on project based learning in improving students' skills and learning outcomes in the subject of lathe machining at SMK Negeri 5 Sukoharjo. The method used is a quasi-experimental design with a two-group pre-test post-test design, involving 68 students divided into an experimental group and a control group. Data collection was carried out through pre-test and post-test, observation, and documentation. The results of the analysis showed a significant increase in the experimental group's learning outcome score with an average post-test score of 79.85 or an increase of 34.07% compared to the average pre-test score of 59.56. In contrast, the control group only experienced an increase of 28.3%, from an average of 55.44 to 71.18. The t-test showed a significant difference between the experimental group and the control group (p <0.05). N-Gain analysis also showed high effectiveness in the experimental group (0.5166) compared to the moderate category in the control group (0.3503). In addition, the observation results showed an increase in motivation, active participation, and student cooperation during the learning process. Thus, the combination of the jigsaw model with project-based learning has proven effective in improving student learning outcomes and skills significantly compared to conventional learning methods. This study contributes to the development of contextual and collaborative vocational learning strategies to face the demands of the industrial world.
Peningkatan Kompetensi Pengecoran Logam melalui Pemanfaatan Tungku Berbahan Bakar LPG dan Kowi Berbasis Limbah di SMK Negeri 2 Kudus Rusiyanto Rusiyanto; Rahmat Doni Widodo; Kaleb Priyanto; Ruben Bayu Kristiawan; Muhammad Zakky Mubarok; Muhammad Emir Al Hakim; Yudistira Rijal Andika; Hibban Pasya Hafid; Julivan Brian Womsiwor
Cakrawala: Jurnal Pengabdian Masyarakat Global Vol. 4 No. 3 (2025): Agustus: Cakrawala: Jurnal Pengabdian Masyarakat Global
Publisher : Universitas 45 Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30640/cakrawala.v4i3.4993

Abstract

This community service program aimed to improve vocational students’ competence in metal casting by introducing LPG-fueled furnaces and UNNES crucibles fabricated from evaporation boat waste. The partner, SMK Negeri 2 Kudus, faced two main challenges: limited utilization of aluminum scrap from automotive practice and the absence of affordable, durable crucibles for repeated casting activities. The program applied a structured approach consisting of socialization, training, mentoring, and evaluation. Activities included theoretical instruction, pretest–posttest assessment, and hands-on workshops involving furnace operation, crucible utilization, mold preparation, and aluminum casting. Results demonstrated significant improvements: the average pretest score of 4.85 increased to 9.0 in the posttest, reflecting an 85.57% gain in competence. Qualitative observations showed that students developed greater confidence, teamwork, and adherence to safety standards. Beyond competence improvement, the innovation provided a cost-effective and sustainable solution for recycling aluminum scrap and reducing dependence on expensive imported crucibles. The program effectively integrated research-based technology into vocational education and aligned with the Teaching Factory model. This collaboration between university and school can serve as a replicable model for other vocational institutions seeking to strengthen practical skills, sustainability, and industry relevance.
Co-Authors Ainun Athar, Muhammad Cahyanto, Septian Eko Eko Cahyanto, Septian Enita, Sarai Gojandra, Farda Pega Libra Haikal Haikal Hibban Pasya Hafid Julivan Brian Womsiwor Khoirul Huda Komar Roni Kriswanto Kriswanto Kriswanto, Kriswanto Laksono, Galih Tri Muhamad Reza Wahyu Prasetyo Muhammad Emir Al Hakim Muhammad Khumaedi Muhammad Zakky Mubarok Ninda Kurniadi Pramudi, Ganjar Prasojo, Krisna Tri Priyanto, Kaleb Putra, Fajar Waskhita Rahmat Doni Widodo Rusiyanto Rusiyanto Setyo Bhahak Fendi Baihaqi Tegar Oki Prasdika TriLaksono, Galih Yudistira Rijal Andika