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Unveiling the fracture mechanisms and electrical resistance characteristics of CFRP laminates with shallow surface scratches introduced by ultraviolet laser under direct tensile loads
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DOI：10.1016/j.compositesb.2026.114097.png)
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Abstract
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• According to the boundary effect theory, the relationship “Fracture Load = Strength × Area” still holds when the CFRP laminate is under direct tensile conditions. • Based on the measurement principle of the four-electrode method, the relationship between the initial crack depth of the CFRP specimens and their electrical resistance changes was determined. • The fracture load of CFRP specimens with different initial cracks was successfully predicted based on the established crack-electrical resistance relationship.
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