Interlaminar shear of woven fabric Kevlar-epoxy composites in three-point loading

✍ Scribed by K. Padmanabhan; Kishore

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 566 KB
• Volume: 197
• Category: Article
• ISSN: 0921-5093
• DOI: 10.1016/0921-5093(94)09742-9

✦ Synopsis

The interlaminar shear behaviour of woven fabric Kevlar-epoxy composites in three-point loading has been studied for various span-to-depth ratios and explained. A detailed analysis of the failure modes has been carried out for various span-to-depth ratios and the observed transition from tensile to shear mode of failure explained. The explanation is based on the elastic plastic model for Kevlar composite beams. The apparent interlaminar shear strength obtained from short beam tests is shown to increase more than the predicted values for a decrease in span-to-depth ratio. The true interlaminar shear strengths of the different woven fabric Kevlar-epoxy composites were obtained from their apparent values. The effect of thickness on the interlaminar shear strength has been looked into and reported. A detailed failure analysis involving methods and scanning electron microscopic examination of the fracture features has been carried out and reported.