Simulation and experimental study on deicing of magnetostrictive patch transducer
A deicing method based on the excitation of SH0 waves by Fe-Co magnetostrictive material patch transducers to generate interfacial shear stress is proposed. SH0 is a non dispersive guided wave mode,which has the advantage of small attenuation in guided wave energy transfer. The transducer structure uses a mutually perpendicular bias magnetic field and an alternating excitation magnetic field. The finite element method is used to simulate and analyze the experimental iced aluminum plate,and it is found that the transducer produces the maximum interfacial shear stress at an excitation frequency of 16 kHz. When the excitation current is 2 A,the shear stress reaches 0.7 MPa,exceeding the standard of 0.4 MPa required for deicing. A deicing experimental test is conducted on a 200 mm × 200 mm × 1 mm iced aluminum plate in a refrigerator at-15℃. When the excitation current is 2 A,the deicing operation is completed in about 1min,and the deicing power consumption is only 0.46 W/cm2 . The designed magnetostrictive patch transducer can provide support for the development of small volume and low power consumption ultrasonic deicing technology.
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维普
