Abstract
Thin composite films of calcium modified lead titanate (PTCa)/copolymer of vinylidene fluoride-trifluoroethylene P(VDF-TrFE) and PTCa/Epoxy have been produced and their piezoelectric d33- and electromechanical coupling coefficient kt, have been measured. These composite sensors have been used to monitor strain induced in a glass/epoxy laminate produced by cyclic loading. PTCa/P(VDF-TrFE) was embedded in a laminate structure to detect acoustic emission (AE) signals generated on the surface of the laminate by a conventional lead-break technique. The results show that the composite sensor is able to detect AE signals over a wide bandwidth:.
Original language | English |
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Pages (from-to) | 75-86 |
Number of pages | 12 |
Journal | Ferroelectrics |
Volume | 187 |
Issue number | 1-4 |
DOIs | |
Publication status | Published - 1996 |