The purpose of nondestructive evaluation is to detect degradation in time so that corrective action can be taken before the degradation challenges the structural integrity of an industrial system or one of its components. Accurate characterization is required to distinguish progressive degradation from benign conditions. In nondestructive evaluation, characterization includes quantification and description of location, dimensions, shape, orientation, and composition of a flaw or degradation. An imaging system that uses the synthetic aperture focusing technique for ultrasonic testing is one choice for characterization of degradation in metals, especially welded assemblies. In this paper, we emphasize the ultrasonic imaging of intended weld microstructure. New technology that was invented for this purpose is described.
Revised: September 8, 2003 |
Published: June 1, 2003
Citation
Schuster G.J., S.R. Doctor, and L.J. Bond. 2003.A System for High-Resolution, Nondestructive, Ultrasonic Imaging of Weld Grains. In IMTC/03, Proceedings of the 20th IEEE Instrumentation and Measurement Technology Conference, 1, 659-663. Piscataway, New Jersey:I E E E.PNNL-SA-38392.