Detection and tracking of cracks based on thermoelastic stress analysis.

ABSTRACT: Thermoelastic stress analysis using arrays of small, low-cost detectors has the potential to be used in structural health monitoring. However, evaluation of the collected data is challenging using traditional methods, due to the lower resolution of these sensors, and the complex loading conditions experienced. An alternative method has been developed, using image decomposition to generate feature vectors which characterize the uncalibrated map of the magnitude of the thermoelastic effect. Thermal data have been collected using a state-of-the-art photovoltaic effect detector and lower cost, lower thermal resolution microbolometer detectors, during crack propagation induced by both constant amplitude and frequency loading, and by idealized flight cycles. The Euclidean distance calculated bet

SUBMITTER: Middleton CA 

PROVIDER: S-EPMC7813230 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature