Abstract
In the present investigation, vibration signatures have been used for identifying the place of crack and depth in pre-cracked FRP beams. Bidirectional (woven) FRP composite beams are consisting of 13 layers of epoxy–glass fibres (0°/7.5°/15°/22.5°/30°/37.5°/45°). Effects of clamped–free and clamped–clamped end conditions have been studied in the current investigation. Fibre orientations effect on dynamics of FRP beam by the altering transverse crack location and its depth have been observed by applying analytical, finite element method, and neural network techniques. The results obtained have been verified experimentally. The outcomes of both methods have deviation within 6% during comparison. From the investigation, it has been concluded that the natural frequencies and mode shapes can be used for identifying crack location and crack depth for different fibre orientation in FRP beam.
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