스티치를 이용한 유리섬유 직물의 직조형태에 따른 단섬유 인장강도 통계적 분석 연구

Abstract

The application of stitches during textile weaving can potentially damage the surface of the fibers, thereby affecting their mechanical properties. In this study, we examined the surface condition of glass fiber fabrics with applied stitches and investigated changes in their mechanical properties via tensile test and its statistical analysis based on stitch fixation patterns. Surface conditions and damage levels were observed using a reflective microscope and FESEM and tensile strength was measured using a UTM. Microscopic observations revealed that 90 degrees fabrics, characterized by lower stitch fixation frequency but higher strength, exhibited fewer cracks of larger size. In contrast, 45 degrees fabrics displayed opposite characteristics. As a result of the analysis of the Weibull distribution of tensile strength of glass fiber, both fiber types showed similar distribution patterns in a total of two locations: low and high tensile strength sections, similar fracture patterns on the surface and interior. However, the frequency of fractures and tensile strength levels varied depending on the stitch fixation frequency and intensity. This study confirms that the mechanical properties of fibers are influenced by stitch fixation patterns.