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大家知道,利用全息照相干涉测量法的时间平均法可以测定构件作自然振动或强迫振动时的振幅,对于不平整的、非定向反射的模型同样可以进行这种测定。本文论述的是:如何能定量地测定复杂几何形状的构件(阀板)以及固液系的振动状态;这种振动状态如何在构件受到瞬时加载之后接着处于稳定状态下出现的。在此采用100赫芝与10千赫的频率进行周期性激励,采用的振幅约为1微米。此时在一厚0.5毫米的阀板上测得弯曲应力
It is well known that time-averaged methods of holographic interferometry can be used to determine the amplitude of a component when it is vibrating naturally or forcedly. This can also be done for an uneven, non-directional reflection model. This paper discusses how to quantitatively measure the vibration of a complex geometry (valve plate) as well as the solid-liquid system; how this state of vibration appears after the component is momentarily loaded and then stabilized. Periodic excitation was performed here at 100 Hertz and at 10 kHz using an amplitude of about 1 micrometer. At this point in a thick 0.5 mm valve plate bending stress measured