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All Journal International Journal of Innovation in Mechanical Engineering and Advanced Materials Jurnal Teknik Mesin, Industri, Elektro dan Informatika Jurnal Pengabdian Masyarakat Nian Tana LATAR, Jurnal Arsitektur Cylinder : Jurnal Ilmiah Teknik Mesin Blueprint Journal
Servianus, Yohanes Viva
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Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Desain Mesin Pengolahan Sampah Plastik Menggunakan Teknologi Mesin Pencacah Yohanes Viva Servianus; Abraham Donatus Baha; Dominikus Dionisius Fernandez
Jurnal Teknik Mesin, Industri, Elektro dan Informatika Vol. 3 No. 4 (2024): Desember : JURNAL TEKNIK MESIN, INDUSTRI, ELEKTRO DAN INFORMATIKA
Publisher : Pusat Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jtmei.v3i4.4588

Abstract

Plastic waste is a serious environmental problem because it does not decompose naturally and takes years to break down. To address this problem, an effective solution is to recycle plastic waste into economically valuable products. This study aims to design a plastic shredder machine using the Verein Deutscher Ingenieure (VDI) 2222 method. The machine is designed to improve the efficiency of plastic waste processing through faster and larger capacity shredding. The plastic shredder machine has specifications of 124 cm in height, 94.5 cm in length and 80 cm in width, with a frame made of 50x50x5 mm angle iron. It is equipped with 33 blades on two shafts, driven by a gasoline engine and capable of shredding plastic waste at a capacity of 31.5 kg/hour. The use of the VDI 2222 method ensures a structured and optimal design. The research results show that this machine is effective in reducing the volume of plastic waste and facilitating the recycling process.
“PKM PELATIHAN PERAWATAN DAN PERBAIKAN RINGAN KENDARAAN BERMOTOR DALAM IMPLEMENTASI MATA KULIAH STRATEGI DIAGNOSA UNTUK MASYARAKAT DI KELURAHAN HEWULI – KABUPATEN SIKKA” Gusti F.X.Wara Wangge; Rikardus Dole; Romualdus Paulus Sogen; Yohanes Viva Servianus
JPMNT JURNAL PENGABDIAN MASYARAKAT NIAN TANA Vol. 3 No. 3 (2025): Juli: Jurnal Pengabdian Masyarakat Nian Tana
Publisher : Fakultas Ekonomi & Bisnis, Universitas Nusa Nipa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59603/jpmnt.v3i3.951

Abstract

This community service aims to improve the understanding and basic skills of the community in Hewuli Village, Sikka Regency, in maintaining and carrying out minor repairs to motor vehicles. This activity is part of the implementation of the Diagnostic Strategy course, which integrates theory with direct practice in the field. The training focuses on early identification of vehicle problems, periodic maintenance steps, and handling minor damage that often occurs. The methods used in this activity include interactive lectures, demonstrations, and direct practice by participants. The results of the activity show an increase in the knowledge and technical skills of the community in carrying out minor services independently. This activity is expected to encourage independence and provide added economic value to the local community through applicable technical skills.
Inovasi Mesin Peluruh Biji Jagung sebagai Teknologi Tepat Guna Pascapanen di Desa Watugong untuk Mendukung Pertanian Berkelanjutan Servianus, Yohanes; Baha, Abraham D.; Leta, Emanuel; F. X Wara Wangge, Gusti; Pereira Maia Pinto, Gaspar
Blueprint Journal Vol 1 No 2 (2025): Agustus: Blueprint Journal
Publisher : PT Yupin Felicitas Utama

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Abstract

Watugong Village, located in Alok Timur District, Sikka Regency, is a traditional agricultural area where maize serves as both a staple crop and an integral part of local cultural heritage. However, post-harvest processing—particularly the shelling of maize kernels from the cob—is still conducted manually, leading to inefficiency and reduced grain quality. Attempts at mechanization through modern machines have often proven unsuitable due to their high cost, complexity, and incompatibility with the needs of small-scale farmers. To address this issue, the Mechanical Engineering Department of Politeknik Cristo Re developed a 20 kg-capacity maize shelling machine that is ergonomic, affordable, and easy to operate. Powered by a 0.75 kW electric motor, the machine employs a transmission system comprising pulleys, V-belts, and a silent chain, enabling it to increase shelling efficiency by more than 4.5 times compared to manual methods. Performance tests show a shelling capacity of up to 400 kg/hour with minimal kernel damage. The novelty of this machine lies in its participatory design approach and use of locally available materials and components. This innovation serves as a tangible example of appropriate technology grounded in local wisdom, supporting improved productivity, farmer self-reliance, and sustainable food security in rural communities. 
PENGARUH  PENGGUNAAN TIGA MEREK OLI TERHADAP TEMPERATUR MESIN DAN KONSUMSI BAHAN BAKAR PADA MOTOR HONDA PGM-FI REVO FIT 110 CC Wara Wangge, Gusti F. X; Viva Servianus, Yohanes; Pereira Maia Pinto, Gaspar; Rompi, Rofinus
Blueprint Journal Vol 1 No 3 (2025): October: Blueprint Journal
Publisher : PT Yupin Felicitas Utama

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Abstract

This research analyzes the effect of three oil brands, namely MPX1, Federal Ultratec, and Enduro 4T on engine operating temperature and fuel consumption on the Honda Revo Fit 110 cc PGM-FI motorbike. The test was carried out at an engine speed of 17,000 rpm for 30 minutes using Pertalite fuel. The parameters observed include engine temperature and remaining fuel volume. The results show that the type of oil influences thermal performance and fuel efficiency. MPX1 oil produces the highest temperature of 111°C with the most economical fuel consumption (968 ml remaining). The Federal Ultratec showed a temperature of 109°C with 900 ml remaining, while the Enduro 4T had a low of 107°C with 880 ml remaining. MPX1 with the semi-synthetic SAE 10W-30 formulation has better viscosity stability than the other two mineral oils, so it is able to maintain combustion efficiency and engine performance. Overall, the MPX1 provides the most optimal performance, the Federal Ultratec excels in engine protection at high loads, and the Enduro 4T is better in lowering operating temperatures. Choosing oil that matches engine specifications is an important factor in maintaining fuel efficiency and engine durability.
Kajian Awal Antropometri Postur Berdiri Pekerja Pria Indonesia yang Berdomisili di Jakarta Servianus , Yohanes Viva; Yanto
Cylinder : Jurnal Ilmiah Teknik Mesin Vol 9 No 1 (2023): APRIL 2023
Publisher : Department of Mechanical Engineering Atma Jaya Catholic University of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/cylinder.v9i1.5030

Abstract

This paper presents a preliminary result of anthropometric data of 30 males Indonesian industry workers. For this preliminary results, 16 dimensions in the standing posture were presented. For each dimension, the summary of mean, SD and percentile (5 and 95) were calcaluted which are useful as the basis for the design of products, machines and equipments. The data in this study were compared with those from previous studies i.e Norwegia, Nigeria and India. From data comparisons, Indonesian workers are shorter than those of other nationalities from Norwegia and Nigeria. Meanwhile, anthropometric characteristics of Indonesian workers were found to be similar with India workers. As for application, anthropometric data could be used as the basis to determine the proper dimensions of equipments and machines to be used by workers. Furthermore, the results could become a benchmark for other countries targeting products and machinery for Indonesia market.
Analisa Indeks Kualitas Infrastruktur Jalan Dan Jembatan Di Kabupaten Sikka Yuneta, Margaretha; Servianus, Yohanes Viva; Keytimu, Claudia Ekarista Sika
Jurnal Latar Vol. 2 No. 2 (2024): Jurnal LATAR (Desember)
Publisher : Program Studi Arsitektur Universitas Nusa Nipa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69749/jl.v2i2.83

Abstract

Infrastruktur dasar merupakan tulang punggung pembangunan suatu daerah, yang meliputi jaringan transportasi, air bersih, sanitasi, energi, dan telekomunikasi. Kualitas infrastruktur, baik yang keras fisik (jalan dan jembatan) memainkan peran vital karena merupakan penggerak perekonomian. Hal ini tidak terlepas dari dengan terkoneksinya seluruh akses jalan dan kondisi infrastruktur yang mendukung, masyarakat dengan mudah memasarkan hasil sumber daya alam (SDA) yang selama ini dihasilkan. Karena dengan tembusnya infrastruktur, hasil pertanian dan perkebunan akan sangat cepat dijual ke pasaran, tanpa harus menunggu waktu berhari-hari. Oleh karena itu, perkembangan kualitas infrastruktur sangatlah perlu ditinjau tiap tahunnya. Tujuan dari penelitian ini adalah dapat memberikan gambaran yang komprehensif tentang kondisi infrastruktur dasar yakni jalan dan jembatan di Kabupaten Sikka pada tahun 2023. Metode yang digunakan dalam penelitian ini adalah metode studi kasus atau studi lapangan, selanjutnya data diolah dan dianalisis menggunakan software excel 2019 dan menarik kesimpulan. Hasil penelitian menunjukkan Kondisi jalan raya adalah rusak sedang (61,67%) dan kondisi jembatan adalah rusak ringan (89,28%).
Utilization of Plastic Waste and Rice Husk Ash in Polyethylene-Based Composites for Ceiling Applications Wangge, Gusti F. X. Wara; Servianus, Yohanes Viva; Rande, Thadeus
International Journal of Innovation in Mechanical Engineering and Advanced Materials Vol 7, No 3 (2025)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/ijimeam.v7i3.36658

Abstract

This study aims to analyze the effect of polyethylene (PE) and rice husk ash (RHA) composition variations on the mechanical properties of recycled composites developed as environmentally friendly ceiling materials. Composite specimens were prepared through a systematic process involving shredding PE plastic waste into 3–5 mm particles, burning rice husks at 600–700 °C followed by sieving through a 200-mesh screen, melting the plastic at 160–170 °C, and mixing with RHA at three composition ratios: 80:20, 70:30, and 60:40 (PE:RHA). The mixtures were molded into 50 × 50 mm specimens and tested in accordance with ASTM D695 for compressive properties and ASTM D792 for density. The results show that composition variation significantly influences compressive strength, elastic modulus, and strain behavior. The 80:20 composition exhibited the highest elasticity, with a compressive strength of 15.59 MPa and an elastic modulus of 463.50 MPa; however, it fractured shortly after exceeding the elastic limit. The 60:40 composition achieved the highest compressive strength of 125 MPa with a strain of 56.6%, but showed brittle behavior due to its very low elastic modulus (7.5 MPa). The 70:30 composition demonstrated the most balanced mechanical performance, with a compressive strength of 61.65 MPa, a strain of 18.20%, and stable ductile behavior. Based on the overall mechanical performance, the 70:30 PE–RHA composition is recommended as the optimal formulation, as it provides the best balance between strength, stiffness, and deformation resistance. This composition is therefore considered the most suitable for non-structural ceiling applications requiring lightweight, mechanically stable, and environmentally sustainable materials.
Co-Authors Abraham Donatus Baha Baha, Abraham D. Dominikus Dionisius Fernandez Keytimu, Claudia Ekarista Sika Leta, Emanuel Margaretha Yuneta Pereira Maia Pinto, Gaspar Rande, Thadeus Rikardus Dole Rompi, Rofinus Romualdus Paulus Sogen Wangge, Gusti F. X. Wara Wangge, Gusti F.X. Wara YANTO