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本文讨论了斜楔材料的声学特性。提出了斜楔设计中对所用材料的声速限制,论述了温度对声速、衰减及声阻抗的影响,探讨了PSF(聚枫)代替有机玻璃制作斜楔块的可能性。实验证明采用PSF可改善探头的性能。
This article discusses the acoustic properties of the wedge material. The limitation of sonic velocity of materials used in wedge design is presented. The influence of temperature on sound velocity, attenuation and acoustic impedance is discussed. The possibility of using PSF instead of plexiglass to produce cogging is discussed. Experiments show that the use of PSF can improve the performance of the probe.