A parallel-plate assembly consists of many thin plates stacked in parallel, between the palates there are narrow channels to let coolant flow through. To secure the intensity, rigidity, stability and reliability of the parallel-plate assembly, the natural vibration characteristic is measured and analyzed in flow field, which is important for the design and safe operation of new type fuel element in nuclear reactors. A new electromagnetic method for measuring flow-induced vibration in small space is introduced. The sensor is of small size, light weight and easy fixation. Experimental results sh...
