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本文实现一种用真空抽吸环氧法制成背衬的工艺。声阻抗率可达30×10~6Pas/m。背衬棒用于低超声频换能器,可以得到单极或双极的声脉冲。
In this paper, a process of making a backing by vacuum suction epoxy method is realized. Acoustic impedance rate of up to 30 × 10 ~ 6Pas / m. Backing rods are used in low-ultrasonic transducers to obtain unipolar or bipolar sound pulses.