Detection of Voids in Composites

The void content of pultruded composite rods have been studied using NMRI [IS]. Glass fiber-reinforced nylon rods with fiber contents of 51% by volume were first mixed with different catalyst contents following the reaction injection molding (RIM) process, and then pultruded with a pulling speed 18 inches 

Image of water in pultiuded nylon rode reinforced with glass fibers 

Contour plot of Image showing presence of tubular void 

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