Ultrasonic NDT can assess ductile iron quality
Ultrasonic nondestructive testing (NDT) has been renewed as a viable tool in the assessment of ductile iron. The method has proven to be more reliable, cost-effective, and readily available, compared to traditional testing of nodularity and mechanical properties. Moreover, foundries are able to assess their solidified metal and correct deficiencies before castings are made. Presented are steps to implement ultrasonic velocity and sonic resonance frequency testing for NDT assessment of different grades of ductile iron. These steps have been developed through experiments using ductile iron samples cut from research and foundry tensile test specimens of various grades and microstructures. Both as-cast and heat-treated specimens are analyzed.
Original Publication Date
Lerner, Yury S., "Ultrasonic NDT can assess ductile iron quality" (1998). Faculty Publications. 3856.