Crack identification in a cantilever beam under uncertain end conditions
We study the problem of crack identification in a cantilever when clamp rigidity is unknown, and may change with time. An identification method is developed, which requires monitoring of three natural bending frequencies. Crack location may then be found by using a universal curve, i.e. independent of any beam property (geometry or material). The proposed method is verified by numerical simulation and experiment.
scientific article; zbMATH DE number 865899