<![CDATA[The purpose of this research was to determine the bending characteristics of composite sandwich cantula fiber using a cardboard core thickness variation of type BC - flute. This research uses descriptive quantitative method. The research began with the manufacture of sandwich composite material then the material given bending test using a Universal Testing Machine (UTM). Bending testing refers to ASTM C-393 which would result in another calculation, the bending stress and shear stress core face. Face is composed of a fiber composite cantula as filler, Unsaturated Polyester resin as a binder BQTN-EX Yucalac 157, and Metyl Etyl Ketone Peroxide (MEKPO) as a catalyst. Core uses cardboard type BC - Flute compiled by PV Ac - Fox with a thickness variation of 10 mm, 20 mm, 30 mm, and 40 mm. Epoxy adhesive using Versamid 140. The results showed that the thickness variation affects the bending stress composites, core shear stress and bending stress face. The addition ofthe composite thickness resulting impairment the composite bending stress, core shear stress and facing bendingstress. The highest average value occurs at a thickness of 10 mm with a core voltage of 17,47 MPa composite bending, shear cores of 0,75 MPa, and face bending stress of 18,84 MPa.]]>
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