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Tensile Properties of Stitched Fabric Composite Manufactured by RTM Considering Various Strain Rates and Stacking Sequences
|저자명||Jesung Yoo, Hoon Huh, Taehwa Lee and Jaeyoung Lim|
Keywords: CFRP, Strain rate, Stacking sequence, RTM, DIC
Abstract. This paper concerned with tensile properties of stitched fabric composite manufactured by RTM considering various strain rates and stacking sequences. In these days, carbon fiber reinforced polymer (CFRP) composite materials have been widely applied to light-weight structures such as spacecraft and aircraft for their high specific strength. Although CFRP used to be expensive because of complicated manufacturing system, the manufacturing price is decreasing enough to be applied to auto-body. Especially, resin transfer molding (RTM) is one of the attractive CFRP manufacturing process for automotive makers for its low tooling and equipment cost. In order to utilize CFRP manufactured by RTM to auto-body material, it is necessary to acquire tensile properties considering various stacking sequences and strain rates ranging from 0.001/s ~ 100/s. For accurate measurement, digital image correlation (DIC) method is used during tensile test with using high speed camera and the ARAMIS software.