Piezoelectric behavior of pre-stressed curved actuators under load

Karla Mossi, Justin Costley, Zoubeida Ounaies, Robert Bryant

Research output: Contribution to journalConference article

1 Scopus citations

Abstract

Pre-stressed curved actuators typically consist of a piezoelectric ceramic (lead zirconate titanate or PZT) laminated between various layered materials. In one configuration, THUNDER, the bottom layer is stainless steel and the top layer is aluminum; the metallic layers are attached to the PZT ceramic using a polymeric adhesive. In another configuration, Lipca-C2, the layers comprise a glass/epoxy composite and a carbon/epoxy composite. Experimental and numerical results of displacement performance under unloaded conditions have been investigated in the past. The results show that the Lipca-C2 devices produced more displacement than the THUNDER devices when clamped and unloaded. The present study includes a comparative performance of both devices under load to evaluate their lifting capability. Both out-of-plane and in-plane displacements are assessed as a function of load and voltage at low frequency. A non-contact laser was used for the out-of-plane measurements simultaneously with an optic fiber for in-plane displacement at 0 to 5N load values. The load is attached to one end of the actuators, and to avoid possible damage to the actuators, it is moved through a mechanism that utilizes a frictionless linear bearing and a pulley.

Original languageEnglish (US)
Pages (from-to)432-441
Number of pages10
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume5387
DOIs
StatePublished - Oct 25 2004
EventSmart Structures and Materials 2004 - Active Materials: Behaviour and Mechanics - San Diego, CA, United States
Duration: Mar 15 2004Mar 18 2004

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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