An experimental study of spherical indentation on piezoelectric materials

Ramamurty, U. ; Sridhar, S. ; Giannakopoulos, A. E. ; Suresh, S. (1999) An experimental study of spherical indentation on piezoelectric materials Acta Materialia, 47 (8). pp. 2417-2430. ISSN 1359-6454

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The response of lead zirconate titanate and barium titanate piezoelectric ceramics to spherical microindentation was investigated. Force vs penetration depth curves obtained from instrumented indentation reveal that the indentation stiffness depends on the material condition (i.e. poled vs unpoled) and the type of indentor (i.e. electrically conducting vs insulating). Good agreement was found between the experimental results and predictions of an analytical model of Giannakopoulos and Suresh (1999) for the spherical indentation of a transversely isotropic piezoelectric material. A parametric analysis was conducted to identify key material properties that influence the indentation response. An error analysis was performed so as to assess the influence of the variabilities in constituent properties on the scatter in the measured indentation stiffness. This indentation method has been shown to offer a new methodology for characterizing some properties of piezoelectric materials. Advantages and limitations of such a technique are discussed.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Indentation; Ceramic; Functional; Electrical Properties; Piezoelectricity; Mechanical Properties; Elastic; Non-Destructive Testing
ID Code:62472
Deposited On:22 Sep 2011 03:04
Last Modified:22 Sep 2011 03:04

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