Smart structures by integrated piezoelectric thin fibres (II): Properties of composites and their physical description

Schönecker, Andreas; Keitel, Uwe; Kreher, W.; Sporn, D.; Watzka, Winfried; Pannkoke, Kord

doi:10.1080/00150199908210544

Cited by 8 publications

(4 citation statements)

References 2 publications

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“…1, are commonly referred to as Active Fibre Composites (AFCs) or Macrofibre Composites (MFCs). They have potential for use as actuators and sensors [3], structural health monitoring systems [4] and active/passive vibration damping systems [5]. Considerable effort is underway, developing high performance/strain fibres [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Optimisation of interdigitated electrodes for piezoelectric actuators and active fibre composites

et al. 2006

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The optimisation of the interdigitated electrode (IDE) design for active fibre composites was performed using finite element analysis. The effect of the IDE geometry (electrode width and spacing) and electroceramic substrate thickness on the developed strain for bulk PZT substrates was modelled. The modelling results show that the highest strain is generated when the electrode width equals half the substrate thickness and for thin substrates the electrode finger spacing can be reduced to enable lower driving voltages. Approximately 80% of the maximum d 33 strain can be achieved with an electrode separation to substrate thickness ratio greater than 4. The results present simple coherent guidelines for the optimisation of electrode geometry for piezoelectric actuators and active fibre composites.

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Section: Introductionmentioning

confidence: 99%

Optimisation of interdigitated electrodes for piezoelectric actuators and active fibre composites

et al. 2006

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“…The unidirectional nature of the fibres creates in-plane actuation anisotropy, allowing torsional actuation and sensing [11]. Multi-ply composites can also be developed which introduce bending or torsion and the applications for AFCs include shape control, structural health monitoring and vibration control [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Manufacture and characterization of high activity piezoelectric fibres

Bowen

Stevens

Nelson

et al. 2006

Smart Mater. Struct.

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Piezoelectric fibres are finding increasing application in a variety of piezoelectric composites, including active fibre composites (AFCs). This paper describes the manufacture and characterization of lead zirconate titanate (PZT) fibres manufactured by viscous plastic processing (VPP). The manufacturing method will be described along with a systematic characterization of the macrostructure, microstructure, phase composition and low and high field piezoelectric properties. A comparison with other available PZT fibres will be made, which demonstrates that the VPP PZT fibres display high piezoelectric coefficients.

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“…It has also been suggested that the combination of IDEs and ceramic fibres offers an enhanced toughness and damage tolerance, because fracture of individual fibres does not lead to ultimate failure of the device. As a result of these potential advantages, applications for AFCs include shape control, structural health monitoring, and vibration control [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Failure and volume fraction dependent mechanical properties of composite sensors and actuators

Bowen

Dent

Nelson

et al. 2006

Proceedings of the Institution of Mechanical Engineers, Part C:

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Composite actuators and sensors manufactured by combining a ferroelectric ceramic such as lead zirconate titanate and a passive phase such as a polymer are used in a variety of applications including SONAR, vibration damping, change of structural shape (morphing), and structural health monitoring. The composite route provides specific advantages, including tailored piezoelectric response, high strain, a degree of flexibility, and increased damage tolerance compared with conventional dense monolithic ceramic materials. For piezoelectric fibre composites, where fine-scale brittle ceramic fibres of 40 -800 mm diameter are introduced into a ductile polymer matrix, the composite strength and failure mechanism ultimately depend on the mechanical properties of each phase and their volume fraction. This article examines the mechanical properties of piezoelectric fibres and the matrix phase and discusses the possible influence of fibre volume fraction on mechanical properties and failure mechanism of the composite. The data are of particular use in determining the failure stress, failure strain, and failure mechanism of composite actuators and sensors subjected to high levels of stress, for example, in applications where such devices are embedded into host structures.

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Smart structures by integrated piezoelectric thin fibres (II): Properties of composites and their physical description

Cited by 8 publications

References 2 publications

Optimisation of interdigitated electrodes for piezoelectric actuators and active fibre composites

Optimisation of interdigitated electrodes for piezoelectric actuators and active fibre composites

Manufacture and characterization of high activity piezoelectric fibres

Failure and volume fraction dependent mechanical properties of composite sensors and actuators

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