Abstract
Effectiveness evaluation of the damage localization with a local spatial filtration under variable external conditions
Highlights
An effective structural condition monitoring system should work in a continuous mode and not generate false alarms
An effective application of the structural health monitoring system based on natural frequencies of the structure requires application of some method to distinguish the effect of temperature from damage
The moving mass is expected to have different effect on the levels of damage index (DI) than damage. These differences may be exploited by application of an autonomous method that will be able to distinguish between different cases of damage, load or ambient factors
Summary
An effective structural condition monitoring system should work in a continuous mode and not generate false alarms. More sophisticated method for elimination of the temperature influence on the monitoring system efficiency is application of socalled environmental filter [1] It is generally an autoregressive model with moving average (ARMA) identified from a set of experimental data. On the basis of long-term observation of temperature changes and the resulting variations in natural frequency, the authors calculated the correlation between the temperature (obtained as the average for 10,000 time samples) and the natural frequency. This is basically a lookup table approach. The idea is tested on both numerical and experimental data
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
