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http://dx.doi.org/10.7234/composres.2018.31.6.293

A Study on the Mechanical Properties of Braid Composites for the Manufacture of Aircraft Stringer  

Eun, Jong Hyun (Department of Fiber System Engineering, Yeungnam University)
Lee, Joon Suck (Department of Fiber System Engineering, Yeungnam University)
Park, Seung Hwan (Department of Fiber System Engineering, Yeungnam University)
Kim, Dong Hyun (Department of Fiber System Engineering, Yeungnam University)
Chon, Jin Sung (Department of Composite Materials R&D Center, Textile for Life (T4L))
Yoo, Ho Wook (Department of Composite Materials R&D Center, Textile for Life (T4L))
Publication Information
Composites Research / v.31, no.6, 2018 , pp. 293-298 More about this Journal
Abstract
In this paper, we have studied the physical properties of braided composites for use as aircraft stringers. Process variables such as drum winder speed, braid velocity, and mandrel diameter for $30^{\circ}$, $45^{\circ}$ and $60^{\circ}$ braid preforms were quantified and different epoxy resin types were applied to the braided preform using TGDDM, YD-128. Physical properties such as tensile strength and flexural strength of braided composites were investigated. Thermal properties and decomposition temperature of epoxy resin were investigated by TGA analysis. As a result, the lower the angle of the braid composites, the higher the tensile strength and the Flexural strength. The physical properties of braided composites fabricated using TGDDM epoxy resin were superior to the physical properties of braided composites fabricated using YD-128 epoxy resin. This is because the molecular weight of TGDDM epoxy resin was higher than that of YD-128 epoxy resin.
Keywords
Carbon fiber; Composite materials; Braid; Epoxy; Compression molding;
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