acoustic efficiency

Based on the high frequency electrical power meter method ,a new method is presented in this paper that can measure the radiated ultrasonic power and the electro acoustical efficiency of high power transducers under practical conditions.

在高频电功率计方法的基础上，本文提出了一种能够直接测量大功率压电超声换能器在实用状态下的辐射超声功率以及电声效率的新方法。

The electro acoustical efficiency of two ultrasonic vibration sysytems used for cleaning and welding are measured by using admittance circle diagram and resonance admittance calculation method in the paper.

本文用导纳圆图法和谐振导纳计算法，分别对用于超声清洗和塑料焊接的两个振动系统的电声效率进行了测量。

Numerical analysis of vibration and sound radiation efficiency from a submerged cylindrical shell has been carried out by using FEM methods,BEM methods and statistical energy methods.

利用有限元、边界元和统计能量分析方法并结合软件对圆柱壳体在流场中受激振动及声辐射效率作了数值计算分析研究。

The experiment of sound radiation efficiency and engine noise test were carried out when the engine was equipped with thin-wall components with free and compound damping.

采用表面振动法进行了柴油机表面辐射噪声的诊断,并对附加自由和复合阻尼的薄壁件进行了声辐射效率试验研究和整机试验。