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All Journal Journal of Community Service in Science and Engineering Trends in Mechanical Engineering Research
Sunardi, Sunardi
Universitas Sultan Ageng Tirtayasa
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Transportation

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COMPARATIVE STUDY OF ADHESIVE STRENGTH IN MAHOGANY WOOD LAMINATED COMPOSITES Oetama, Pandoe Satria; Sunardi, Sunardi; Ula, Shofiatul; Yusuf, Yusvardi; Dwinanto, Dwinanto; Listijorini, Erny; Santosa, Irfan
Trends in Mechanical Engineering Research Vol 3, No 01 (2025): June
Publisher : Department of Mechanical Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/timer.v3i01.34091

Abstract

Adhesive technology has seen significant advancements in recent years. Compared to welding or threaded joints, adhesives provide a straightforward mechanism for joining material interfaces. Due to practicality allows for the potential development of adhesives with strengths comparable to those of traditional joints. In this study, a modified type of Polyvinyl Acetate (PVAc) adhesive was utilized as a binder for mahogany wood surfaces. The choice of PVAc adhesive is due to its common use in everyday applications, particularly in the woodworking industry. Additionally, this adhesive is relatively safe for both health and the environment. The study examined three types of adhesives: PVAc white adhesive, PVAc yellow adhesive, and a combination of the PVAc white and yellow adhesive. These adhesives were used to bond the wood surfaces, and the bond strength at the interface was evaluated through a flexural test. The results showed that the adhesive strength of white adhesive reached 111 MPa, while the mixed adhesive and yellow adhesive exhibited flexural strengths of 74.2 MPa and 63.4 MPa, respectively. Notably, the presence of white glue was found to enhance the flexural strength of mahogany wood even in the absence of adhesive.
PRELIMINARY STUDY ON THE USE OF IPOMOEA CARNEA POWDER AS A REINFORCEMENT MATERIAL IN THE PRODUCTION OF POLYMER ROOF TILES Kustyo, Nicko Dharma; Sunardi, Sunardi; Fawaid, Moh.; Susilo, Sidik; Setiawan, Ipick; Yusuf, Yusvardi; Sudrajad, Agung; Listijorini, Erny; Nugraha, Kurnia; Wiyono, Slamet; Haryadi, Haryadi
Trends in Mechanical Engineering Research Vol 3, No 01 (2025): June
Publisher : Department of Mechanical Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/timer.v3i01.34510

Abstract

Roof tiles play a vital role in the construction industry by providing protection from the sun's heat and rain. The quality of roof tiles largely depends on the materials used and the manufacturing process, as these factors significantly affect the tiles' mechanical properties. Kangkung pagar (Ipomoea carnea) is one type of alternative natural fiber material that can be utilized in the creation of composite materials. This study aims to explore the potential of Ipomoea carnea powder as an alternative material for producing polymer roof tiles, as well as to examine how variations in the composition of powder and sand influence the mechanical properties of these tiles. The method for producing roof tiles is based on powder metallurgy. The composition of the powder and sand used varies in the following ratios: 10% powder to 50% sand, 20% powder to 40% sand, and 30% powder to 30% sand. Additionally, a fixed composition of 30% polyester resin and 10% asphalt is used. The initial process involves mixing the materials according to these predetermined ratios. The resulting mixture is then molded and compacted under a pressure of 200 kg/cm². Characterization of the mechanical properties includes proximate analysis, calculation of porosity and density, flexural strength testing, and hardness testing.The study's results indicated that the properties of polymer roof tiles are significantly influenced by the composition of the powder and sand used during their manufacture. The findings revealed a porosity value of 0.209%, a density of 0.994%, a flexural strength of 2.270 MPa, and an optimum hardness of 19.1 BHN. The addition of 10% powder increased the hardness value by only 0.4% while decreasing the flexural strength by 0.5%. Overall, the use of Ipomoea Carnea powder was not effective in enhancing the mechanical properties of the polymer roof tiles, as both the flexural strength and hardness values remained below those of commercially available polymer roof tiles.
Empowering Floating Net Cage Fish Farmers Through Educational Strategies in Bohe Silian Village, Berau, East Kalimantan Santosa, Irfan; Farid, Ahmad; Rusnoto, Rusnoto; Siswiyanti, Siswiyanti; Laga, Surya; Sunardi, Sunardi
Journal of Community Service in Science and Engineering (JoCSE) Vol 5, No 1 (2026): Available Online in April 2026
Publisher : Faculty of Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/jocse.v5i1.39755

Abstract

Cantang grouper (Epinephelus fuscoguttatus × Epinephelus lanceolatus) is a high-value aquaculture commodity in Indonesia. However, small-scale farmers in remote areas such as Bohe Silian Village, Berau, frequently suffer significant economic losses due to high fish mortality rates caused by poor health management and fluctuating water quality. This study aims to evaluate the effectiveness of a strategic educational intervention in enhancing farmers' technical capacity for fish health management in floating net cages (Keramba Jaring Apung/ KJA). A participatory community empowerment approach was employed, combining theoretical socialization, on-site demonstrations, and intensive mentoring. The results program significantly improved farmers' multidimensional knowledge and technical skills in water quality and disease management, with success rates of 79%, 97%, 79%, and 80%, across technical, ecological, economic, and social aspects, respectively. Ultimately, the initiative demonstrated that participatory education strategies effectively strengthen the resilience of small-scale aquaculture in remote coastal areas.
Co-Authors Dwinanto, Dwinanto Haryadi, Haryadi Kurnia Nugraha Kustyo, Nicko Dharma Laga, Surya Listijorini, Erny Moh Fawaid Oetama, Pandoe Satria Rusnoto, Rusnoto Santosa, Irfan Setiawan, Ipick Siswiyanti, Siswiyanti Sudrajad, Agung Susilo, Sidik Ula, Shofiatul Wiyono, Slamet Yusuf, Yusvardi