Failure glass-reinforced nylon

A report is presented on the diagnosis of the failure of a component made from a 33% glass-reinforced nylon 66 on the assembly line with the aid of DSC, thermal gravimetric analysis, which was utilised to determine filler content and type. X-ray fluorescence and IR spectroscopy. The analytical procedures employed indicated that failure of the component could be attributed to the presence of chlorine probably arising from contamination of the process by PVC. 

Fig. 5.65 SEM of a glass fiber reinforced nylon shows excellent compatibility between the fiber surfaces and the matrix. Short, nearly lateral failure across the matrix and fiber is observed. Some glass fibers exhibit classical brittle fracture (arrow) (B). Adhesion of the matrix resin is seen (arrows) at the fiber surfaces (C).

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