(Dept.of Fiber and Polymer Science, Seoul National University)
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The mechanical and impact properties of the stitched Spectra composite was studied. The Spectra fiber reinforced vinylester composites were stitched with plain stitch to improve mechanical and impact resistant properties. The Spectra liber was used as a stitching thread and the composites were stitched twice in alternating sequence with plain stitch. The stitched composite showed different behavior with stitch densities in tensile and flexural properties. The effect of stitching has been changed with the mechanical properties measured under different restrained condition. The stitching has improved the preserving properties of the woven laminate composite structure by restricting the damage propagation.