| Autor: |
Petrov, M. G. |
| Předmět: |
|
| Zdroj: |
AIP Conference Proceedings; 7/25/2019, Vol. 2125 Issue 1, p030092-1-030092-7, 7p, 1 Diagram, 6 Graphs |
| Abstrakt: |
The methods of estimation of structural damage in operation of the aircraft on the example of analysis of the relationship between the spectra of the bending moment of the wing and the acceleration in mass center of the engine during takeoff and landing are discussed. The change in the reaction of the structure to perturbing effects is illustrated by theoretical calculation based on the model of a standard inelastic body. The state of the structure is estimated by the ratio of the spectra of the input effects and the reaction of the structure in certain time and frequency ranges. Their choice is determined by the mutual spectral characteristics and the coherence function of the compared processes. A measure of the state of the structure is the maximum values of the coefficient of transmission of disturbing effects to its controlled points. Taking into account the dependence on the takeoff and landing masses of the aircraft, changes in the magnitude and frequency of the transmission coefficient maxima will indicate the appearance of damage in the design. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
