title: Evaluation of polarization of embedded piezoelectrics by the thermal wave method.
abstract: This work demonstrates the benefit of the thermal wave method for the evaluation of the polarization state of embedded piezoelectrics. Two types of samples were investigated: A low-temperature co-fired ceramics (LTCC)/lead zirconate titanate (PZT) sensor-actuator and a macro-fiber composite (MFC) actuator. At modulation frequencies below 10 Hz, the pyroelectric response was governed by thermal losses to the embedding layers. Here, the sample behavior was described by a harmonically heated piezoelectric plate exhibiting heat losses to the environment characterized by a single thermal relaxation time.
authors.affiliation: Technische Universität Dresden, Dresden, Germany. Gunnar.Suchaneck@tu-dresden.de
authors.forename: Gunnar
authors.initials: G
authors.lastname: Suchaneck
authors.forename: Agnes
authors.initials: A
authors.lastname: Eydam
authors.forename: Wenguo
authors.initials: W
authors.lastname: Hu
authors.forename: Burkhart
authors.initials: B
authors.lastname: Kranz
authors.forename: Welf-Guntram
authors.initials: WG
authors.lastname: Drossel
authors.forename: Gerald
authors.initials: G
authors.lastname: Gerlach