Effects of uniaxial stress on magnetoacoustic emission and magnetoacoustic responses in steelResults of magnetoacoustic emission (MAE) and magnetoacoustic (MAC) measurements performed with an unembrittled HY-80 steel specimen are presented. The MAE measurements were obtained by applying an ac magnetic field of 20 Hz parallel to the uniaxial stress axis. The effects of tensile stress were shown to monotonically decrease the peak amplitude of the MAE burst, and they were consistent with the predicted trend based on the tensile stress-induced domain alignment. The effects of compressive stress were found to increase the peak amplitude of the MAE burst initially and to eventually decrease as the magnitude of compressive stress increased.
Document ID
19920031031
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Namkung, M. (NASA Langley Research Center Hampton, VA, United States)
Yost, W. T. (NASA Langley Research Center Hampton, VA, United States)
Utrata, D. (Association of American Railroads Chicago, IL, United States)
Denale, R. (U.S. Navy, David W. Taylor Naval Ship Research and Development Center Annapolis, MD, United States)
Kushnick, P. W. (PRC Kentron, Inc. Hampton, VA, United States)
Grainger, J. L. (AS&M, Inc. Hampton, VA, United States)