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All Journal Community Empowerment AEEJ : Journal of Automotive Engineering and Vocational Education Indo-MathEdu Intellectuals Journal
Nasution, Ichsan
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Arts Humanities Automotive Engineering Control & Systems Engineering Education Energy Mathematics 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.
Analisis Kritis dan Komparatif Pendekatan Mixed-Method dalam Evaluasi Asesmen Kompetensi pada Pendidikan Teknologi dan Kejuruan Berbasis Outcome Ali, Muttaqin Kholis; Nasution, Ichsan; Anwar, Muhammad; Simatupang, Wakhinuddin
Indo-MathEdu Intellectuals Journal Vol. 7 No. 2 (2026): Indo-MathEdu Intellectuals Journal (In-Press)
Publisher : Lembaga Intelektual Muda (LIM) Maluku

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54373/imeij.v7i2.5239

Abstract

The transformation towards Outcome-Based Education (OBE) requires an authentic assessment system that is capable of fully representing competency achievements, particularly in Technology and Vocational Education (TVE) which emphasises graduate work readiness. This study aims to analyse the effectiveness of the mixed-method approach in evaluating outcome-based competency assessments that cover cognitive, psychomotor, and soft skills aspects. The study used a convergent parallel mixed-method design with simultaneous quantitative and qualitative data collection. Quantitative data were obtained from 139 Year 12 Software Engineering students at a vocational school in Mandailing Natal Regency using an outcome-based assessment rubric with 30 indicators that had met construct validity and reliability. Qualitative data were collected through interviews with 21 participants consisting of students, teachers, and industry supervisors. Regression analysis results showed that psychomotor competencies and soft skills had a significant effect on students' work readiness. Thematic analysis revealed a perception gap between school and industry standards, the importance of formative feedback, and the role of work culture in competency formation. Data integration showed convergence in the aspect of adaptive problem solving, but there were still differences in collaborative competencies.
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 Ali, Muttaqin Kholis asrul, asrullah edy susanto Febriansyah, Ilham Firmansyah, M. Sadly Hasan Maksum M. Yasep Setiawan Muhammad Anwar Nuzul Hidayat, Nuzul Rahmadani Rahmadani Simatupang, Wakhinuddin Wisesa, Budi Utomo Yuliady, Ilham Zulfadli Zulfadli