Detection and Characterization of Cracks and Corrosion in Aging Aircraft Structures

摘要

In this section we present some recent results of an experimental study of the factors determining microcrack development and the microcrack development processes in flush-riveted aluminum alloy joints. These results are taken from the work of Connor et al. [6]. The development of the microcracks and how they formed major propagating cracks were followed using both optical and acoustic microscopes. While the optical microscope gives information about the specimen surface, the scanning acoustic microscope gives an image through the thickness projected onto a plane.