Orthogonal Optimal Design Method for Point-Focusing EMAT Considering Focal Area Dimensions
Sensors and Actuators A: Physical(2020)
摘要
•In this work, FEM simulation and orthogonal test methods are used to study the effect of impact factors on the PFSV-EMAT’s performance. Five factors are selected in the test to investigate the signal intensity and focal area dimensions of the transducer. Range analysis is applied to compare the influence degree of each factor. In addition, drive frequency f and focal depth lFz are also studied individually. Considering the influence of different factors on different results, the optimal combination of parameters can be obtained. The effectiveness of the optimization method is verified by both simulation and experiment. Moreover, the experiments show that the focusing intensity of the optimized transducer is 400% higher than the average value of the non-optimized transducers, the effective focal length is reduced by 15%, and the effective focal width is reduced by 57%.
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关键词
PFSV-EMAT,focal area dimensions,orthogonal test,optimal method,ultrasonic focusing
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