Materials characterization using acoustic nonlinearity parameters and harmonic generation - Engineering materialsThe paper reviews nonlinear bulk compressional wave acoustic measurement systems and the applications of measurements from such systems to engineering materials. Preliminary measurements indicate that it is possible to determine percent second phase precipitates in aluminum alloys, while other measurements show promise in the determination of properties related to the fatigue states of metals. It is also shown that harmonic generation can be used for the study of crack opening loads in compact tension specimens, which in turn gives useful information about the fatigue properties of various engineering materials.
Document ID
19920031020
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Yost, William T. (NASA Langley Research Center Hampton, VA, United States)
Cantrell, John H. (Cambridge, University United Kingdom)