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Integrated giant magnetoresistive transducer for eddy current testing

Teodor Dogaru
Stuart T. Smith
University of North Carolina/Charlotte, NC28223, e-mail: tdogaru@uncc.edu
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ABSTRACT

1. Introduction

2. Probe configuration

3. Experimental results

4. ASIC design for an integrated eddy current transducer

5. Conclusions

References

  1. W. Avrin , "Magnetoresistive eddy-current sensor for detecting deeply buried flaws", Review of Progress in QNDE, 15, pp. 1145-1150, 1996.
  2. E.S. Boltz and T.C. Tierny, "New electromagnetic sensors for detection of subsurface cracking and corrosion", Review of Progress in QNDE, 17, pp.1033-1038, 1998.
  3. T. Dogaru and S.T. Smith, "Detection of cracks near sharp edges by using a giant magnetoresistance-based eddy current probe", Proceedings of SPIE, 2000
  4. R. Geiger and E. Sanchez-Sinencio, "Active filter design using operational transconductance amplifiers; a tutorial", IEEE Circ. and Dev. Mag., March 1985

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