Dynamic Properties of the Aircraft’s Full-scale Component Test Setup and its Vibration-based System of Structural Health Assessment

Several problems of experimental investigation of strength and lifetime of the full-scale components of aircraft are considered: computer aided designing, static and dynamic stress state simulation of test setup, structural health monitoring (SHM) of equipment and tested structural component. Vibration-based damage detection is accepted as a basic means of SHM, and main attention is focused on a low-cost solution that would be attractive for practice. The index of correlation coefficient deviation was used for extraction of the features due to the actual structural damage or pseudo damage. It is shown that the problem of vibration-based detection of a small damage in the large-scale structure at low-frequency excitation can be solved successfully.