Electronic Theses and Dissertation

Kontainer merupakan wadah yang mendapatkan beban dalam proses pengiriman, seperti getaran, benturan, dan beban statis. Beban-beban ini mengakibatkan kerusakan pada kontainer seperti keretakan dan kegagalan struktur. Komposit struktural menjadi sebab menarik dalam material pengganti kontainer. Penelitian ini bertujuan membuat komposit sandwich serat abaca dan aluminium honeycomb dengan 3 variasi arah serat yaitu serat anyam, searah, dan acak serta menguji dan menganalisis kekuatan bending komposit sandwich serat abaca dan aluminium honeycomb. Pengujian melakukan pemotongan pada spesimen uji bending mengikuti standar ASTM C393-00. Pada saat melakukan pengujian bending, spesimen diletakkan antara dua dudukan yang memiliki jarak span 150 mm. Beban spesimen diberikan kecepatan bending yaitu 3 mm/s. Hasil pengujian bending menunjukkan nilai tegangan rata-rata uji bending serat anyam 42,54 MPa, serat searah 37,49 MPa, dan serat acak 32,80 MPa. Nilai defleksi rata-rata uji bending menunjukkan pada serat acak 5,82 mm, serat anyam 3,53 mm, dan serat searah 2,87. Nilai kekakuan uji bending menunjukkan pada serat searah 6,2×107 N-mm2, serat anyam 5,6×107 N-mm2, dan serat acak 2,5×107 N-mm2. Komposit sandwich yang menggabungkan serat abaca dengan inti aluminium honeycomb telah berhasil dibuat. Komposit sandwich dengan skin komposit anyaman serat abaca memiliki kekuatan bending yang lebih baik dibandingkan dengan serat yang berorientasi searah dan serat acak.

Containers are subjected to various loads during transportation, including vibrations, impacts, and static loads. These loads can cause damage to containers, such as cracks and structural failure. Structural composites are an attractive option for container replacement materials. This study aims to fabricate abaca fiber and aluminum honeycomb sandwich composites with three fiber orientation variations: woven, unidirectional, and random, and to test and analyze the bending strength of the abaca fiber and aluminum honeycomb sandwich composites. The bending test was conducted by cutting bending test specimens according to ASTM C393-00 standard. During the bending test, the specimens were placed between two supports with a span of 150 mm. The load was applied to the specimens at a bending rate of 3 mm/s. The bending test results showed average bending stress values of 42,54 MPa for woven fiber, 37,49 MPa for unidirectional fiber, and 32,80 MPa for random fiber. The average bending deflection values were 5,82 mm for random fiber, 3,53 mm for woven fiber, and 2,87 mm for unidirectional fiber. The bending stiffness values were 6,2 × 107 N-mm2 for unidirectional fiber, 5,6 × 107 N-mm2 for woven fiber, and 2,5 × 107 N-mm2 for random fiber. Abaca fiber sandwich composites with an aluminum honeycomb core were successfully fabricated. The sandwich composite with unidi abaca fiber skin exhibited better bending strength than unidirectional and random fiber orientations.