Damage Localization in Systems with Unknown Inputs
The Dynamic Damage Locating Vector (DDLV) technique localizes damage by interrogating changes in transfer matrices G. It is shown that although G cannot be computed in a stochastic setting a surrogate matrix whose null space is related to that of G can be extracted and this matrix suffices. The paper reviews the theoretical support for the DDLV approach, discusses the constraints used to obtain the surrogate for G, and illustrates the technique using a 12-DOF shear beam monitored with 6 sensors.
L. Garibaldi, C. Surace, K. Holford and W.M. Ostachowicz
D. Bernal "Damage Localization in Systems with Unknown Inputs", Key Engineering Materials, Vol. 347, pp. 107-112, 2007