Damage space identification and positioning technology based on lamb waves in strong noise environment

The invention discloses a damage space identification and positioning technology based on lamb waves in a strong noise environment. The technology comprises the following steps: (1) signal acquisition; piezoelectric ceramic sensor arrays are uniformly arranged on a to-be-tested carbon fiber composite laminate and a standard carbon fiber composite laminate, the number of sensors is M, the first to (M-1) th sensors are sequentially used as excitation sensors to generate lamb waves, and other sensors are used as receiving sensors to collect lamb wave response signals; (2) de-noising and reconstructing the signal; (3) horizontally positioning the damage; performing damage horizontal positioning by using a tomography algorithm, and determining a two-dimensional coordinate of the damage; (4) positioning the damage depth; judging the layer number of the damage by using a convolutional neural network, and determining the depth of the damage; and (5) visualizing the spatial position of the damage. The method is simple