NDT.net - May 2002, Vol. 7 No.05

Enhanced resolution transducers for thick pieces ultrasonic inspection : the FERMAT transducer concept

Jיrפme Poguet, Imasonic S.A.
Olivier Le Baron, Imasonic S.A.
Laurent Gallet, Imasonic S.A.
Corresponding Author Contact:
Email: jerome.poguet@imasonic.com, Web: www.imaconic.com



Concept of Fermat transducers


High electric impedance

Low acoustic impedance

High coupling coefficient


Optional features

Examples of applications



  1. P.Dumas, J.Poguet, G.Fleury, IMASONIC, " Piezocomposite Technology : an innovative approach to the improvement of NDT performance using ultrasounds", Proceedings of 8th European conference on NDT (2002)
  2. J.Poguet, IMASONIC, A.Garcia, J.Vazquez TECNATOM, F.Pichonnat, J.Marguet, IMASONIC, " Phased array technology : concepts, probes and applications", Proceedings of 8th European conference on NDT (2002)
  3. M.Fink, N.Chakroun, F.Wu, L.Beffy, G.Mangenet, «Application of ultrasonic time reversal mirrors to non destructive testing» Procs Of 6th European Conference on NDT (1994)
  4. J.Poguet, IMASONIC, E.Abittan, EDF, "Inspection of thermal barrier of primary pumps with phased array probe and piezocomposite technology", proceedings of 1st EPRI phased array seminar (1998)
  5. G.Fleury, IMASONIC, C.Gondard, CEA" Improvements of Ultrasonic Inspections through the use of Piezo Composite Transducers", Proc. Of 6th European Conference on non destructive testing (1994)

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