• Proceedings of the Korean Fiber Society Conference
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• 2003.04a
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• pp.404-406
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• 2003

직물의 촉각은 인간의 피부와 직물사이의 마찰력, 온도, 진동 등의 물리적, 역학적인 현상에 의해서 느끼게 된다. 그 중에서 마찰력은 질감을 결정하게 하는 가장 중요한 요소이다. 지금까지의 연구는 직물과 금속 등의 다른 물질 또는 직물과 직물사이에서 나타나는 마찰력을 측정하였으나, 본연구에서는 직접 손끝으로 문지를 때 나타나는 마찰력을 실시간으로 측정할 수 있도록 다축 로드셀등을 이용한 측정장치를 개발하였다. (중략)

• Journal of the Korean Society of Manufacturing Process Engineers
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• v.18 no.1
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• pp.59-64
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• 2019

In recent years, the HP-CRTM method, which has the ability to produce carbon fiber-reinforce plastic composites at high speeds, has come into the spotlight in the automotive parts industry, which demands high productivity. Multi-axial carbon fabric, an intermediate material used in this HP-CRTM molding process, consists of layered fibers without crimp, which makes it better in terms of tensile and shear strength than the original woven fabrics. The NCF (non-crimp fabric) can form the layers of the carbon fiber, which have different longitudinal and lateral directions, and ${\pm}{\theta}$ degrees, depending on the product's properties. In this research, preforms were made with carbon fibers of ${\pm}45^{\circ}$ and $0/90^{\circ}$, which were lamination structures under seven different conditions, in order to create the optimal laminated structure for automobile reinforcement center floor tunnels. Carbon fiber composites were created using each of the seven differently laminated preforms, and polyurethane was used as the base material. The specimens were manufactured in accordance with the ASTM D3039 standards, and the effect of the NCF lamination structure on the mechanical properties was confirmed by a tensile test.