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http://dx.doi.org/10.7735/ksmte.2017.26.4.395

Investigation of Energy Absorption Property of Glass/Epoxy Composite Tubes with Bevel and Tulip Triggers  

Kim, Jung Seok (New Transportation Systems Research Center, Korea Railroad Research Institute)
Publication Information
Journal of the Korean Society of Manufacturing Technology Engineers / v.26, no.4, 2017 , pp. 395-401 More about this Journal
Abstract
Energy absorption capabilities and failure modes of circular tubes made of glass/epoxy with two trigger mechanisms were evaluated. Three types of glass/epoxy tubes were fabricated using a hand lay-up method with unidirectional and woven fabric prepregs tapes, and a filament winding method. The one end of the fabricated tubes was machined for the bevel trigger and tulip trigger. Then, crush tests were conducted at 10 mm/min loading speed, wherein the glass/epoxy tubes were crushed by a brittle fracturing mode combined with fragmentation and lamina-splaying modes. The UD glass/epoxy tubes with a bevel trigger and the filament winded tubes with a tulip trigger showed the maximum and minimum specific energy absorptions, respectively, with a difference of 9.3%. The tube with a tulip trigger exhibited a maximum reduction of 5.7% in the initial peak load; the tube with a bevel trigger showed a maximum increase of 2.9% in the specific energy absorption.
Keywords
Composite tubes; Trigger; Glass/epoxy; Specific energy absorption; Failure;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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