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All Journal ARMATUR : Artikel Teknik Mesin dan Manufaktur MACHINERY: Jurnal Teknologi Terapan
Nur Candra Dana Agusti Candra
Politeknik Negeri Subang
Aerospace Engineering Automotive Engineering Control & Systems Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Pengaruh Fraksi Volume dan Perlakuan Awal Terhadap Kekuatan Bending Pada Material Komposit Serat TKKS Nur Candra Dana Agusti Candra; Jefri Aldo; Ayesha Gilang Prahara; Agung Tri Noviyanto
ARMATUR : Artikel Teknik Mesin & Manufaktur Vol. 7 No. 1 (2026): Jurnal Armatur
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/armatur.v7i1.10546

Abstract

This study aims to evaluate the effect of fiber volume fraction and alkali surface treatment on the bending strength of composite materials reinforced with empty fruit bunch (EFB) fibers from oil palm (TKKS). The TKKS fibers were soaked in NaOH solutions with concentrations of 2%, 4%, and 6% for fiber fractions of 20%, 40%, and 60%, respectively. The composite was fabricated using the hand lay-up method with epoxy resin as the matrix and tested using the three-point bending method based on ASTM D790. The test results showed that the 20% volume fraction treated with 2% NaOH yielded the highest average bending strength of 39.59 MPa. Meanwhile, the average strength for 40% and 60% fiber fractions were 31.88 MPa and 30.07 MPa, respectively. These findings indicate that increasing fiber volume fraction does not linearly improve mechanical performance, particularly in flexural loading. It can be concluded that the combination of 20% fiber volume fraction and 2% NaOH treatment provides the best performance in terms of bending strength for TKKS-based composites.
Analisa Kerusakan dan Strategi Perbaikan Komponen Pada Mesin Pencacah Batang Jagung Dalam Upaya Mencegah Downtime Nur Candra Dana Agusti Candra; Fendy Thomas; Jefri Aldo; Ayesha Gilang Prahara; Ane Agustiana
MACHINERY Jurnal Teknologi Terapan Vol. 7 No. 1 (2026): MACHINERY: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36257/machinery.v7i1.11761

Abstract

Perawatan pada mesin pemotong diperlukan untuk menjaga kinerja dan mencegah kegagalan tanpa diduga, terutama pada mesin pertanian dengan penggerak mesin bensin. Studi ini bertujuan untuk menganalisa kegagalan umum pada mesin pemotong batang jagung dan mengusulkan strategi perawatan pencegahan terstruktur berdasarkan kondisi lapangan. Metode penelitian meliputi tinjauan pustaka, identifikasi kerusakan, inspeksi fisik, perbaikan kecil, perbaikan sedang, dan evaluasi kinerja pasca perbaikan. Hasil menunjukkan kegagalan yang sering terjadi pada pisau, sabuk V, karburator, saringan, dan poros karena tidak adanya perawatan terjadwal. Perbaikan sedang memberikan kontribusi terbesar terhadap peningkatan kinerja, terutama setelah penggantian sabuk V dan penyetelan karburator. Berdasarkan temuan ini, jadwal perawatan pencegahan (PM) harian, mingguan, dan bulanan dikembangkan untuk meminimalkan waktu henti dan memperpanjang umur mesin. Rencana perawatan ini diharapkan dapat memandu operator dalam menjaga keandalan mesin.
Co-Authors Agung Tri Noviyanto Ane Agustiana Ayesha Gilang Prahara Fendy Thomas Jefri Aldo Jefri Aldo