KEKUATAN IMPAK KOMPOSIT SANDWICH BERPENGUAT SERAT AREN

PUTRADI, GAGAS IKHSAN (2011) KEKUATAN IMPAK KOMPOSIT SANDWICH BERPENGUAT SERAT AREN. Other thesis, universitas sebelas maret.

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    Abstract

    Sandwich composite is a type of composites which has high enough strength when is used as secondary or primary structure. The study is aimed to investigate the effect of skin and core thickness versus the impact strength of sandwich composite with palm fibers and wood sawdust of sengon laut as reinforcement and core, respectively. The materials used in this work are sugar palm fiber; unsaturated polyester resin 157 BQTN-EX; wood sawdust of sengon laut and urea formaldehyde. Sugar palm fiber with alkali treatment is imposed by soaking in NaOH 5% solution for ± 4 hours. The specimen was prepared by press methode with a variations of skin thickness (2, 3, 4 and 5 mm) and variations of core thickness (5, 10, 15 and 20 mm). The impact test procedures of composite sandwich refer ASTM D-5942 standard using Charpy impact test equipment. The result shows that the value of impact strength of palm fiber composite sandwich with wood sawdust of sengon laut as core with skin thickness 2, 3, 4 and 5 mm are 0.0179, 0.0198, 0.252, and 0.022 J/mm2 respectively. Along with the addition of core thickness, the absorbed energy will be increased. But in this research, the highest impact strength values contained in the composite sandwich with a core thickness 10 mm with the value is 0.015 J/mm2. The sectional fracture of composite sandwich indicates some types of failure which are core shear failure, core crushing, and brittle fracture. Key words : sandwich composite, impact toughness, core, skin, arenga pinnata fiber, sengon laut

    Item Type: Thesis (Other)
    Subjects: T Technology > TA Engineering (General). Civil engineering (General)
    Divisions: Fakultas Teknik > Teknik Mesin
    Depositing User: Yudha Kuntoaji
    Date Deposited: 21 Jul 2013 07:26
    Last Modified: 21 Jul 2013 07:26
    URI: https://eprints.uns.ac.id/id/eprint/7428

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