Eddy Current Displacement Sensor

NeeNee

how can we measure the amplitude of vibration of a sheet with and eddy current displacement sensor???



my course work is :
how the time taken for the amplitude of vibrating sheet of aluminium to halve,varies with the magnetic flux density of the field in which the sheet is placed.
I wanted to know how does an eddy current displacement sensor or vibration sensor works?

NeeNee

I don need any1's help 'll find that myself.......