Interferometric measurement of surface displacements in 1-3 piezocomposites

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In a piezoelectric ceramic-polymer composite, the piezoceramic and the nonpiezoelectric polymer will have different deformations when subjected to an external electrical or mechanical stimulus. This local, nonuniform deformation eventually determines the overall electromechanical behavior of the composite. In the current investigation, static surface displacements of a 1-3 piezocomposite were investigated using a scanning heterodyne laser interferometer. Displacement profiles were measured for several different interface conditions and correlated with rod/polymer adhesion. The material properties of a thin interlayer surrounding the piezoceramic rods as well as the interfacial adhesion had a significant effect on the rod displacement. Rods coated with a very compliant interlayer had a much larger displacement than untreated rods, while rods treated with a silane coupling agent to enhance adhesion had a much lower displacement. Experimental displacement profiles were found to be in good agreement with theoretical predictions.

Original languageEnglish (US)
Pages (from-to)6
Number of pages6
JournalAmerican Society of Mechanical Engineers (Paper)
StatePublished - 1995
EventProceedings of the 1995 ASME International Mechanical Engineering Congress & Exposition - San Francisco, CA, USA
Duration: Nov 12 1995Nov 17 1995

ASJC Scopus subject areas

  • Mechanical Engineering


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