Experimental validation of numerical and fuzzy analysis of a faulty structure

In the current analysis numerical and fuzzy methods are adopted for detection of damage in a cracked beam structure containing transverse cracks. Based on the flexibility produced due to the crack a new stiffness matrix is deduced and subsequently that is used to calculate the natural frequencies and mode shapes of the cracked beam using numerical method. The fuzzy inference system is designed by setting up various fuzzy rules with the modal parameters as input data obtained from theoretical analysis. The output from the fuzzy system is relative crack depth and relative crack location. The results of the numerical and fuzzy analysis are being validated with the result from experimental analysis. The results are found to be in good agreement.