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DF: Fachverband Dielektrische Festkörper
DF 19: Poster 2
DF 19.19: Poster
Wednesday, March 13, 2013, 15:00–17:30, Poster B2
Measurement of Elastic Properties of Some Epoxy Materials in a Broad Frequency Range — •Ulrich Straube1, Christoph Pientschke1,2, and Sabine Kern1,2 — 1Martin-Luther-University Halle, Institute of Physics, Germany — 2Martin-Luther-University Halle, Interdisciplinary Center of Materials Science, Germany
Composite materials containing embedded piezoelectric fibers in epoxy materials are important for the fabrication of ultrasound transducers for medical applications. The elastic stiffness and compliance coefficients of these epoxy materials must be known for optimising and modeling of such composites.
Measurement methods for the determination of the Young’s modulus and the shear elastic modulus are described. The methods contain the Hz-range with dynamical mechanical analysis (DMA), mechanical resonator methods in the kHz-range and several ultrasound methods in the lower MHz-range.
These methods are utilized for the mechanical characterisation of epoxy materials used in ultrasound transducers. Selected results spanning a broad frequency range are presented.