Evaluation of the Effect of Flatness on the Contact Pressure Distribution between Jointed Plates by means of Ultrasonic techniques

概要

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A contact pressure distribution in jointed plates is investigated by means of an ultrasonic technique, especially by varying the flatness of the joint surface. At first, the relations between the contact pressure and sound pressure of a reflected wave measured by using a normal probe and angle probes are obtained by compressing calibration blocks under various surface roughnesses. Next, when two rectangular plates and two disks with a circular hole are compressed under various convex flatnesses of the joint surface, the sound pressure of the reflected wave is measured by using the normal probe and the angle probes. From the relations between the calibrated and measured curves, the contact pressure distribution in these jointed plates is quantitatively obtained. The experimental results are graphically presented and are compared with the analytical ones. It is clarified that the contact pressure distribution is significantly influenced by the small flatness deviation. Thus, the proposed ultrasonic method is practically useful for the measurement of contact pressure.
一般社団法人日本機械学会の論文
1991-01-15