Piezoelectric implant method: theoretical and experimental study of the influence of inherent geometrical and bonding defects

N. Saint-Pierre; Yves Jayet; Jean-Claude Baboux

doi:10.1117/12.237103

26 April 1996 Piezoelectric implant method: theoretical and experimental study of the influence of inherent geometrical and bonding defects

N. Saint-Pierre, Yves Jayet, Jean-Claude Baboux

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Proceedings Volume 2779, 3rd International Conference on Intelligent Materials and 3rd European Conference on Smart Structures and Materials; (1996) https://doi.org/10.1117/12.237103
Event: 3rd International Conference on Intelligent Materials, 1996, Lyon, France

Abstract

The piezoelectric implant method has demonstrated its efficiency to monitor the mechanical properties of polymer based materials and in particular to follow in situ curing and ageing phenomena. From the electrical impedance of a piezoelectric plate inserted in the material to be tested and using an optimization algorithm, we have shown previously that it is possible to determine two acoustical parameters of the material: the attenuation and the velocity of the ultrasonic waves. This paper deals with the influence of different defects (non parallelism and debonding) on the validity of these results. Thanks to a model, and using the Kramers-Kronig relations, the defect that does not disturb the correct use of the identification process were evaluated.

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N. Saint-Pierre, Yves Jayet, and Jean-Claude Baboux "Piezoelectric implant method: theoretical and experimental study of the influence of inherent geometrical and bonding defects", Proc. SPIE 2779, 3rd International Conference on Intelligent Materials and 3rd European Conference on Smart Structures and Materials, (26 April 1996); https://doi.org/10.1117/12.237103

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