Experimental evidence of the cross-section warping in short composite beams under three point bending

This work provides experimental evidence of the cross-section warping in beams under three point bending. A suitable optical method is used to measure the whole displacement field onto one of the lateral surfaces of two short composite beams. The warping is clearly visible when the degree of anisotropy is important. The measured fields are shown to be in good agreement with theoretical expectations. The influence of crushing due to the central support is also investigated.

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