Multiple Structural Damage Detection using Measured Frequency Response Function
Structural damage detection has been under attention since unknown damages make major hazard and case human losses. Researches in this field of study have been increased in the last few years. In this paper, a new method of damage detection in continues structures is presented. The proposed method is based on Frequency Response Function (FRF) Combination of measured FRF in a simple manner and using graphical diagrams make the user find the exact location of damaged element(s) According to finite element modeling of structures, a cantilever beam was modeled and the performance of the proposed method was checked. Decreasing the number of sensors and using rotational FRFs are the main advantages of the proposed method. Considering noise polluted data confirmed that this method can be used for practical purposes. In fact, using noise polluted data up to 5% doesn't have major effect on the results. The best excitation frequency of applied load is also studied in this research