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Effect Of Stitch Density And Stitch Thread Thickness On Damage Progression And Failure Characteristics Of Stitched Composites Under Out-Of-Plane Loading, Kwek Tan, A. Yoshimura, N. Watanabe, Y. Iwahori, T. Ishikawa
Effect Of Stitch Density And Stitch Thread Thickness On Damage Progression And Failure Characteristics Of Stitched Composites Under Out-Of-Plane Loading, Kwek Tan, A. Yoshimura, N. Watanabe, Y. Iwahori, T. Ishikawa
Dr. Kwek-Tze Tan
In this paper, the damage progression and failure characteristics of stitched composites under out-of-plane loading are experimentally investigated. Test specimens, stitched with various stitch densities and stitch thread thicknesses, are studied using quasi-static indentation test. Test specimens are loaded and unloaded in 0.5 mm incremental indentation displacement to examine for damage phenomena using non-destructive inspection techniques namely ultrasonic C-scan, X-ray radiography and X-ray micro-computed tomography to elucidate complex damage mechanisms and fracture behavior. Recorded test history of load–displacement curves indicate that damage progression can be characterized into three stages: damage initiation, damage propagation and final damage failure. Results show that …