Air Force Research LaboratoryMaterials and Manufacturing Directorate Wright Patterson Air Force Base United States
The non-contact acousto-thermal signature NCATS is a nondestructive evaluation technique with potential to detect fatigue in materials such as noisy titanium and polymer matrix composites. The determination of underlying physical mechanisms and properties may be determined by parameter estimation via nonlinear regression. The nonlinear regression analysis formulation, including the underlying models, is discussed. Several models and associated data analyses are given along with the assumptions implicit in the underlying model. The results of these analyses are discussed.
AIP Conference Proceedings , 1706, 1, 01 Jan 0001, 01 Jan 0001,