Abstract
An inexpensive apparatus using the eddy current decay method for measuring the resistivity from bulk samples is described. In order to rapidly accumulate data on the variation of the eddy current, the analogue signal is digitised and stored in a specially developed fast transient device (FIFO). The digital data are then transferred to a microcomputer for further analysis. The resistivity of an Al-1.56 at.% Cu alloy has been measured using this apparatus in order to determine the solute concentration after different aging times at 210 degrees C.
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