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Proceedings Paper

In-situ determination of stress intensity factors for the prediction of fatigue crack growth using piezoelectric polymer coatings
Author(s): Andreas Ricoeur; Dennis Bäcker; Meinhard Kuna
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Paper Abstract

A new sensor concept for fatigue crack growth monitoring in technical structures is presented. It allows the in-situ determination of the position of the crack tip as well as the fracture mechanical quantities. The required data are obtained from a piezoelectric polymer film, which is attached to the surface of the monitored structure. The stress intensity factors and the crack tip position are calculated from electrical potentials obtained from a sensor array by solving the non-linear inverse problem.

Paper Details

Date Published: 1 April 2010
PDF: 9 pages
Proc. SPIE 7647, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2010, 764724 (1 April 2010); doi: 10.1117/12.847641
Show Author Affiliations
Andreas Ricoeur, Univ. Kassel (Germany)
Dennis Bäcker, Technische Univ. Bergakademie Freiberg (Germany)
Meinhard Kuna, Technische Univ. Bergakademie Freiberg (Germany)


Published in SPIE Proceedings Vol. 7647:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2010
Masayoshi Tomizuka, Editor(s)

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