THE EFFECT OF METALLOGRAPHIC STRUCTURE ON CLAMPED PLATE VIBRATION CHARACTERISTICS

The vibration response of a square clamped plate is dependent on the m etallographic structure of the material used. Analytical studies of su ch systems have succeeded in predicting many of the modes of vibration , but experimental verification has been limited by the methods employ ed. Electronic speckle pattern interferometry offers the ability to st udy plate dynamics in real time, thus allowing changes of force input on the respective vibration modes to be observed as repeatable events. The study demonstrates the extent to which material characteristics c an affect experimental frequency values as compared to theoretical pre dictions.