Comparison of Different Independent Component Analysis Algorithms for Output-Only Modal Analysis

Figure 14

Modal shape comparison between FEA and separating vector by maximization kurtosis with gradient descent method with measurement noise.

(a) The 1st-order modal shape

(b) The 6th-order modal shape

(c) The 3rd-order modal shape

(d) The 3rd-order modal shape

(e) The 6th-order modal shape

(f) The 6th-order modal shape