Third M.I.T. Conference on Computational Fluid and Solid Mechanics June 14–17, 2005  

Repair of delaminated beams via piezoelectric patches

Q. Wanga,*, S.T. Quekb
aDepartment of Mechanical, Materials and Aerospace Engineering, University of Central Florida, Orlando, FL 32816-2450, USA bDepartment of Civil Engineering, National University of Singapore, Singapore 117576
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ABSTRACT
This research presents the application of piezoelectric patches on the repair of delaminated beams subjected to concentrated static loading. The voltage applied on the piezoelectric patches is calculated and designed to erase the shear stress singularity at the tips of the delamination so that the delaminated beam can be repaired in the sense that the sliding mode of fracture on the beam can be removed. The dependence of the voltages on the location and the size of the delamination is carefully studied.

Keywords:  Sliding mode of fracture; Piezoelectric materials; Repair of structures; Delaminated beams
* Corresponding author. Tel.: +407 8235828; Fax: +407 8230208; E-mail: qzwang@mail.ucf.edu