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All Journal Jurnal Pendidikan Vokasi Jurnal Teknologi Dharmakarya : Jurnal Aplikasi Ipteks Untuk Masyarakat E-Dimas: Jurnal Pengabdian kepada Masyarakat JURNAL DINAMIKA VOKASIONAL TEKNIK MESIN Conference SENATIK STT Adisutjipto Yogyakarta Reswara: Jurnal Pengabdian Kepada Masyarakat Journal of Engineering and Applied Technology
Sasongko, Beni Tri
Universitas Negeri Yogyakarta
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mechanical Engineering Public Health Social Sciences

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Journal : journal of engineering and applied technology

 1 
Energy balance of thermal and catalytic degradation processes of plastic waste for producing alternative fuel Sasongko, Beni Tri; Wisnu Wardhana, Prabuditya Bhisma; Kurniawan, Stephanus Danny; Susilo, Gunawan Budi
Journal of Engineering and Applied Technology Vol. 4 No. 2 (2023): (August)
Publisher : Faculty of Engineering, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jeatech.v4i2.61334

Abstract

A simple thermal and catalytic degradation of polyethylene plastic waste has been carried out to produce alternative liquid fuel. Plastic of 1500 grams was pyrolyzed at a specific temperature of 450 °C. The gases were condensed in a water-cooled condenser and collected in a liquid container. Energy balance calculation was done where catalytic cracking with Y zeolite as catalyst seemed to be the best because the generated thermal energy from waste plastic oil was already higher than the required electric energy supplied for the cracking. However, several improvements must always be made in order to save more energy and create the best result for commercialization.
FDM 3D printing application for making plate pattern on sand casting Royan, Muhammad; Soemowidagdo, Arianto Leman; Sasongko, Beni Tri; Pradana, Deny Aji
Journal of Engineering and Applied Technology Vol. 4 No. 2 (2023): (August)
Publisher : Faculty of Engineering, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jeatech.v4i2.64658

Abstract

Pattern making in sand casting requires high-level skilled workers since accuracy is the most important concern in producing good quality products. Therefore, conventional pattern-making becomes a major obstacle in developing new products, especially for complicated products as it takes over 70% of the total time in production of the foundry process. This study offers an alternative method in pattern making utilizing 3D technology with the Fuse Deposition Material (FDM) method. It consisted of three steps: planning, production, and evaluation. An intake manifold is an example product that was designed by using Computer Aided Design (CAD) and then imported to a slicer application to obtain the G codes. After the design was printed by using filament of PLA+, it was assembled to create the plate pattern that then was used to produce the intake manifold through casting. The study result shows that the FDM method of the 3D printing technology is feasible for pattern making on sand casting. Deviation and shrinkage of the casting product were still within tolerance. The largest shrinkage is 0.453 mm (1.258%).
Innovation in the Development of a CO₂ Laser Cutting Machine: Experimentation on Cutting Quality and Machine Precision Sutopo; Sasongko, Beni Tri; Farih Kurniawan; Virda Hesy Lutviana Saputri; Muhammad Imawan Badranaya; Abdul Aziz Nugroho; Septianto Budi Pranata
Journal of Engineering and Applied Technology Vol. 6 No. 02 (2025): (August)
Publisher : Faculty of Engineering, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jeatech.v6i02.90321

Abstract

In the era of Industry 4.0, CO₂ laser cutting technology has been increasingly adopted across manufacturing, creative industries, and vocational education due to its precision, flexibility, and non-contact process. However, wood-based composites such as Medium Density Fibreboard (MDF) present challenges in laser machining, including thermal deformation, carbonization, and surface damage, necessitating further investigation into process parameters. This study designed and developed a CNC CO₂ Laser Cutting Machine with a 60 W laser source, dimensions of 160 × 100 × 85 cm, and a working area of 110 × 72 × 2 cm, integrating mechanical, optical, and control systems to improve efficiency and precision. The research method involved prototype design, fabrication, assembly, and iterative trials on acrylic, plywood, and MDF, with adjustments made to optimize power, cutting speed, and control stability. Surface roughness tests showed significant variation across materials, with MDF achieving an average Ra value of 6.25 µm (smooth) and acrylic achieving 0.85 µm (very smooth), indicating that acrylic provides superior aesthetic and precision outcomes, while MDF remains suitable for applications with moderate tolerance. The findings highlight that laser parameter optimization is critical for cut quality, and further refinements through jigs/fixtures and the addition of a rotary axis are recommended to enhance structural accuracy and expand application versatility.
Co-Authors Abdul Aziz Nugroho Achmad Arifin Andrean Emaputra Badranaya, Muhammad Imawan Bayu Rahmat Setiadi Farih Kurniawan Gunawan Budi Susilo Harjanto, Chrisna Tri Irdayanti Mat Nashir Kurniawan, Stephanus Danny Marifa Kurniasari Ngabdul Munif Pradana, Deny Aji Royan, Muhammad Septianto Budi Pranata Susilo, Gunawan Budi SUTOPO Sutopo Sutopo Tri Adi Prasetya Virda Hersy Lutviana Saputri Virda Hesy Lutviana Saputri Wisnu Wardhana, Prabuditya Bhisma