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Multifunctional performance validation of coconut frond fibre-reinforced composite prototype for automotive interior application Muhammad Habibi; Rizki Suwanda; Wardhiah Wardhiah; Maisarah Maisarah; Muhammad Iqbal; Usman Usman
Jurnal Polimesin Vol 24, No 4 (2026): August
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v24i4.9196

Abstract

The automotive industry increasingly demands sustainable, multifunctional materials for interior components to simultaneously reduce environmental impact and improve occupant comfort. This study presents a comprehensive experimental validation of a coconut frond fibre-reinforced composite prototype intended for automotive door trim panel application. The prototype, developed at Technology Readiness Level (TRL) 2, was evaluated across three critical performance domains: mechanical properties (tensile, flexural, impact, and hardness), acoustic performance (sound absorption coefficient), and thermal characteristics (thermal conductivity and heat deflection temperature). Specimens were prepared and tested in accordance with internationally recognised standards (ASTM D3039, D790, D256, D2240, E1050, E1530, D648). Mean and standard deviation from five replicate specimens per test revealed tensile strength of 28.0 ± 1.4 MPa, flexural strength of 48.1 ± 0.8 MPa, impact toughness of 7.59 ± 0.54 kJ/m², and Shore D hardness of 69.4 ± 1.1. Acoustic evaluation yielded a Noise Reduction Coefficient (NRC) of 0.37 ± 0.01, with a peak absorption coefficient of 0.53 at 1000 Hz, significantly outperforming conventional ABS and PP interior materials. Thermal conductivity was measured at 0.142 ± 0.003 W/mK, which is lower than commercial ABS, while the heat deflection temperature of 93.0 ± 0.9°C exceeds the maximum cabin operating temperature of 85°C. All 11 evaluated parameters met or exceeded their respective automotive-grade target specifications, confirming TRL 3 achievement and suitability for advancement to TRL 4 environmental validation. Scanning electron microscopy (SEM) analysis revealed moderate fibre–matrix interfacial bonding with fibre pull-out as the dominant failure mechanism. The findings establish a robust technical database for the future scale-up and industrial adoption of this bio-based composite.
Pemberdayaan siswa melalui penguatan kesiapan akademik, ketahanan mental, dan kompetensi multibahasa berbasis experiential learning Maisarah Maisarah; Muhammad Iqbal; Maulana Ikhsan; Aisyah Protonia Tanjung; Lusyana Eka Wardani; Wardhiah
PERDIKAN (Journal of Community Engagement) Vol. 7 No. 2 (2025)
Publisher : IAIN Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19105/pjce.v7i2.22672

Abstract

Academic readiness, mental resilience, digital literacy, and multilingual competence are essential skills for students transitioning to higher education. Previous studies indicate that these students often experience academic adjustment challenges, psychological pressure, and limited exposure to foreign languages beyond Arabic and English. Although several programs have addressed academic guidance and mental health awareness, the integration of experiential learning within a comprehensive empowerment model for students remains limited. This program was developed based on the hypothesis that experiential, participatory engagement can significantly enhance students’ adaptive capacities. This community engagement initiative employed a Participatory Action Research (PAR) approach, involving 200 students from Madrasah Aliyah Dayah Terpadu Al-Muslimun in Aceh Utara. The program was implemented through four stages: preparation, socialization, implementation, and evaluation, using observation, interviews, structured tasks, and reflective discussions as data collection methods. Key outcome indicators included improved academic learning strategies, enhanced mental health awareness, increased digital literacy through the use of online journals, and basic competencies in Mandarin, Japanese, and French. The results demonstrated notable improvements in academic readiness, understanding of mental well-being, and learning motivation among third-year students. Second-year students demonstrated an increased ability to recognize basic vocabulary and showed a greater interest in foreign language learning. Overall, students' active participation and teachers' positive responses indicated the effectiveness of experiential learning in strengthening their adaptability. These findings align with empowerment theory, which posits that learners are active agents in their own personal development. No adverse effects were identified during program implementation. In conclusion, this empowerment program successfully enhanced students’ academic preparedness, mental resilience, and multilingual competence. Recommendations include establishing language interest classes, digital journal reading groups, and integrating mental health education into the curriculum.