The most effective non-destructive testing (NDT) method to detect subsurface cracks in a composite tidal turbine blade is phased array ultrasonic testing (PAUT). Non-destructive testing methods are used to evaluate the properties of a material, component, or system without causing damage. Composite materials, often used in tidal turbine blades, present unique challenges for NDT due to their layered structure and anisotropic (direction-dependent) properties. Phased array ultrasonic testing (PAUT) uses multiple ultrasonic transducers to generate and receive sound waves. By controlling the timing and amplitude of the signal....
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