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All Journal Community Empowerment AEEJ : Journal of Automotive Engineering and Vocational Education
Nasution, Ichsan
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Arts Humanities Automotive Engineering Control & Systems Engineering Education Energy Public Health Social Sciences Transportation

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Bending Strength Analysis of Composite Materials with Coconut Fiber Reinforcement Using Manual Hand Lay-Up Method asrul, asrullah; Setiawan, M. Yasep; Maksum, Hasan; Hidayat, Nuzul; Susanto, Edy; Nasution, Ichsan
AEEJ : Journal of Automotive Engineering and Vocational Education Vol 6 No 1 (2025): Vol 6 No 1 (2025) : AEEJ : Journal of Automotive Engineering and Vocational Educa
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/aeej.v6i1.288

Abstract

This study investigates the mechanical performance of coconut coir fiber-reinforced composites with volume fractions of 30% and 40%, fabricated using the Manual Hand Lay-Up method. Specimens were tested under three-point bending following ASTM D790-03 to evaluate flexural strength. Results show that composites with a 30% fiber volume exhibit superior bending strength and stiffness compared to those with 40%, indicating a more optimal fiber–matrix ratio. The reduction in performance at higher fiber content is attributed to uneven resin distribution and inadequate fiber impregnation. These findings highlight the potential of coconut coir as a sustainable reinforcement material and emphasize the importance of optimizing fiber volume and manufacturing methods. The study recommends the use of alternative fabrication techniques, such as vacuum infusion, to improve resin homogeneity and mechanical reliability, particularly for structural and lightweight composite applications.
Enhancing industrial competency: Bulldozer operation training as a strategy for youth empowerment in Rantih Village, Sawahlunto Nasution, Ichsan; Febriansyah, Ilham; Wisesa, Budi Utomo; Zulfadli, Zulfadli; Yuliady, Ilham; Rahmadani, Rahmadani; Firmansyah, M. Sadly
Community Empowerment Vol 11 No 1 (2026)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ce.15436

Abstract

This community service activity aims to improve the technical skills of young people in Rantih Village, Talawi District, Sawahlunto City in operating bulldozer heavy equipment. The main problem in this village is the high unemployment rate due to low technical skills and limited access to job training that meets industry needs. The training program was carried out through a one-day theoretical and practical field learning method involving 10 participants. The activity was facilitated by lecturers and industry practitioners who are certified heavy equipment operators. The training results showed a significant improvement in the participants' knowledge and skills, particularly in the areas of basic operation, equipment maintenance, and work safety implementation, by 82%. Additionally, this activity successfully built a partnership network between universities, village governments, and the industrial world. This program is expected to continue on an ongoing basis as a form of youth empowerment towards economic independence.
Co-Authors asrul, asrullah edy susanto Febriansyah, Ilham Firmansyah, M. Sadly Hasan Maksum M. Yasep Setiawan Nuzul Hidayat, Nuzul Rahmadani Rahmadani Wisesa, Budi Utomo Yuliady, Ilham Zulfadli Zulfadli