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  4. Lifetime of laminar piezoceramic modules under cyclic tensile loading
 
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2013
Conference Paper
Titel

Lifetime of laminar piezoceramic modules under cyclic tensile loading

Alternative
Untersuchungen zur Lebensdauer flächiger piezokeramischer Sensor- und Aktormodule
Abstract
Piezoceramic modules used for sensor or actuator applications in smart structures are typically subjected to alternating electro-mechanical loading. Primarily they have to withstand the operational conditions of the host structure, which can include large deformations. To ensure a reliable, reproducible module performance within an expected device lifetime, the loading limits and fatigue behavior of lead-zirconate-titanate (PZT) plate based modules are studied under tensile loading and a lifetime model based on micro-crack propagation was derived. Cracking of the piezoceramic plate is found to cause a degradation of the module performance. A shear lag based model is used to analyze the correlation between fragmentation and performance reduction, yielding good quantitative agreement to experimental data.
Author(s)
Gall, M.
Thielicke, B.
Hauptwerk
4th Scientific Symposium "Lightweight Design by Integrating Functions" 2013. Proceedings
Konferenz
Scientific Symposium "Lightweight Design by Integrating Functions" 2013
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English
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Fraunhofer-Institut für Werkstoffmechanik IWM
Tags
  • piezoceramic transduc...

  • lifetime analysis

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