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Content archived on 2024-04-15

PIEZOELECTRIC CERAMIC/POLYMER COMPOSITES

Objective

The aim of the project is to develop composites with properties superior to those of conventional ceramic piezoelectric materials in applications, such as underwater acoustics and medical diagnostics. Ferroperm was to concentrate on high frequency materials, Morgan Matroc, Unilator, on low frequency underwater acoustics materials. The Univesity of Leeds was to develop methods for structural examination and material characterization, the Technical University of Denmark, finite element simulation and testing of the end products.
Laboratory scale production systems for piezoelectric ceramic/ polymer composites has been developed.

(1-3) and (0-3) composites have been made by modifying existing technology, but found that the (3-3) composites had little value in the low frequency range. (3-3) composites have been made and (1-3) composites have been developed using a novel technique. (0-3) composites were not considered as they have little use in the high frequency range. The work on (1-3) composites was assisted by a computer model developed at the Technical University, Denmark.

Procedures were established to evaluate the structure of those composite materials. The composites were based on PZT (lead zirconate titanate) ceramics in epoxy polymers. The material produced prevents unwanted resonance in the prototype transducers.
THE INITIAL STAGES OF THE WORK WILL CONCENTRATE ON THE SELECTION OF THE MOST SUITABLE CERAMIC/POLYMER COMBINATIONS INCLUDING A CONSIDERATION OF FIBRE-REINFORCEMENT AND AN OPTIMIZATION OF THE STRUCTURAL ELEMENTS OF THE COMPOSITE IN TERMS OF PHASE SIZE, DISTRIBUTION, ETC.

THE DEVELOPMENT OF 3-3 COMPOSITES WILL BE INVESTIGATED AND LATER THIS WILL BE EXTENDED TO A STUDY OF 1-3 COMPOSITES.

FERROPERM WILL CONCENTRATE ON THE HIGH FREQUENCY MATERIALS AND UNILATOR ON THE LOW FREQUENCY UNDERWATER ACOUSTIC MATERIALS. STRUCTURAL EXAMINATION AND MATERIALS CHARACTERIZATION SUPPORT WILL BE GIVEN AND, IN PARTICULAR, FINITE ELEMENT SIMULATION OF MATERIALS AND THE TESTING OF MATERIALS IN END-PRODUCTS WILL BE CARRIED OUT.

THIS PROJECT WILL ENABLE A NEW GENERATION OF TRANSDUCERS TO BE FABRICATED WITH SUPERIOR MECHANICAL PROPERTIES AND IMPROVED PIEZOELECTRIC SENSIBILITY AND IMPULSE RESPONSE. APPROPRIATELY DESIGN COMPOSITES WILL OFFER THE POSSIBILITY OF MORE ECONOMICAL MANUFACTURING METHODS.

Topic(s)

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Call for proposal

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Coordinator

INDUSTRISELSKABET FERROPERM A/S
EU contribution
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Address
STUBBELED 7
2950 VEDBAEK
Denmark

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Total cost
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Participants (3)