The influence of temperature on electromagnetic ultrasonic Lamb wave detection signal

Firstly, the relationship between temperature and the physical parameters of the electromagnetic acoustic transducer and the tested component structure was theoretically calculated. The influence of temperature on the attenuation and velocity of Lamb waves propagating in the plate was analyzed, and the mathematical model was summarized. Secondly, the variation of Lamb wave signals received by electromagnetic acoustic transducers with temperature was quantitatively analyzed through finite element simulation, providing a reference basis for accurate localization and quantification of defects.