This study reports the design, fabrication, and characterization of a tachometer utilizing magnetoelectric (ME) laminate composites with sandwich structure consisting of (PZT) and Galfenol. High temperature characterization of Galfenol shows that it can sustain the magnetic property over . The Curie temperature of PZT compositions was in the range of . The magnitude of the ME coefficient was found to scale with the dimensionless ratio (d g/S), where is the piezoelectric strain constant, is the piezoelectric voltage constant, and is the elastic compliance. The tachometer design is based on the principle that when ME composite is exposed to oscillating magnetic field, it generates voltage with the same frequency.
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