Aging Wire Insulation Assessment by Phase Spectrum
Aging Wire Insulation Assessment by Phase Spectrum Examination of Ultrasonic Guided Waves1 Robert F. Anastasi1 and Eric I. Madaras2 1U.S. Army Research Laboratory, Vehicle Technology Directorate, AMSRL-VT-S, Nondestructive Evaluation Sciences Branch, NASA Langley Research Center, Hampton, VA 23681 2NASA Langley Research Center, Nondestructive Evaluation Sciences Branch, Hampton, VA 23681 ABSTRACT