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Title: Ultrasonic Sound Field Mapping Through Coarse Grained Cast Austenitic Stainless Steel Components

The Pacific Northwest National Laboratory (PNNL) has been involved with nondestructive examination (NDE) of coarse-grained cast austenitic stainless steel (CASS) components for over 30 years. More recent work has focused on mapping the ultrasonic sound fields generated by low-frequency phased array probes that are typically used for the evaluation of CASS materials for flaw detection and characterization. The casting process results in the formation of large grained material microstructures that are nonhomogeneous and anisotropic. The propagation of ultrasonic energy for examination of these materials results in scattering, partitioning and redirection of these sound fields. The work reported here provides an assessment of sound field formation in these materials and provides recommendations on ultrasonic inspection parameters for flaw detection in CASS components.
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Resource Relation:
Conference: PVP 2014: 2014 Pressure Vessels & Piping Conference: Innovation and Imagination in Pressure Vessels and Piping, July 20-24, 2014, Anaheim, California, Paper No. PVP2014-28832
American Society of Mechanical Engineers, New York, NY, United States(US).
Research Org:
Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
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Country of Publication:
United States
Ultrasonic, Phased Array, Cast Austenitic Stainless Steel (CASS), Sound Field Mapping, Flaw Detection