In-situ determination of stress intensity factors for the prediction of fatigue crack growth using piezoelectric polymer coatings

Autor:	Andreas Ricoeur, Meinhard Kuna, Dennis Bäcker
Rok vydání:	2010
Předmět:	Crack closure Materials science Fracture toughness mental disorders Crack tip opening displacement Composite material Paris' law Crack growth resistance curve Compact tension specimen Stress intensity factor Stress concentration
Zdroj:	Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2010.
ISSN:	0277-786X
DOI:	10.1117/12.847641
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::61e3e6ae60499efb2316d18ed0ab945e https://doi.org/10.1117/12.847641 Zobrazit plný text záznamu