Modified lead titanate/polymer 1-3 composite transducers for structural health monitoring

Jaya Prakash Koduru, Joseph Lawrence Rose

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Lamb wave techniques provide an effective means for inspecting large areas of thin structures. Defects arising from corrosion, cracking, adhesive debonding etc. can be monitored continuously by permanently embedding sensors on the structure. However, with the permanently embedded sensors, multiple wave modes are normally generated making the received signals complex to analyze. Interdigital transducers (IDT's) can be used to achieve mode control, giving the capability to excite individual modes. This significantly enhances the ability to extract meaningful information from the received signals. PVDF is commonly used with appropriate electrodes to excite the desired wave mode in the structure. However, due to its low electromechanical coupling coefficient, performance on structures like multi-layered plates and carbon fiber composites is very poor. 1-3 piezocomposites with high electromechanical coupling and bandwidth are designed to overcome the limitations of PVDF. Transducers designed with modified lead titanate are tested on a multi-layered structure to detect delamination at the metal-epoxy interface.

Original languageEnglish (US)
Title of host publicationReview of Progress in Quantitative Nondestructive Evaluation
Pages1799-1806
Number of pages8
Volume1211
DOIs
Publication statusPublished - Apr 1 2010
Event36th Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE - Kingston, RI, United States
Duration: Jul 26 2009Jul 31 2009

Other

Other36th Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE
CountryUnited States
CityKingston, RI
Period7/26/097/31/09

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Koduru, J. P., & Rose, J. L. (2010). Modified lead titanate/polymer 1-3 composite transducers for structural health monitoring. In Review of Progress in Quantitative Nondestructive Evaluation (Vol. 1211, pp. 1799-1806) https://doi.org/10.1063/1.3362299