Read e-book online Dielectric Elastomers as Electromechanical Transducers: PDF

By Federico Carpi, Danilo De Rossi, Roy Kornbluh, Ronald Edward Pelrine, Peter Sommer-Larsen

ISBN-10: 0080474888

ISBN-13: 9780080474885

This e-book presents a entire and up-to-date perception into dielectric elastomers; the most promising periods of polymer-based shrewdpermanent fabrics and applied sciences. This expertise can be utilized in a really wide variety of functions, from robotics and automation to the biomedical field.
The desire for more desirable transducer functionality has led to significant efforts in the direction of the improvement of units hoping on fabrics with intrinsic transduction houses. those fabrics, frequently termed as "smart" or "intelligent", comprise better piezoelectrics and magnetostrictive or shape-memory fabrics. rising electromechanical transduction applied sciences, in accordance with so-called ElectroActive Polymers (EAP), have won significant awareness. EAP provide the opportunity of functionality exceeding different clever fabrics, whereas holding the fee and flexibility inherent to polymer fabrics. in the EAP kin, "dielectric elastomers", are of specific curiosity as they exhibit strong performance, simplicity of constitution and robustness. Dielectric elastomer transducers are swiftly rising as high-performance "pseudo-muscular" actuators, necessary for other kinds of projects. additional, as well as actuation, dielectric elastomers have additionally been proven to supply special chances for stronger generator and sensing devices.
Dielectric elastomer transduction is permitting a big diversity of recent functions that have been precluded to the other EAP or smart-material expertise until eventually recently.
This ebook offers a entire and up-to-date perception into dielectric elastomer transduction, protecting all its primary features. The e-book offers with transduction rules, simple fabrics homes, layout of effective gadget architectures, fabric and equipment modelling, in addition to applications.
* Concise and finished therapy for practitioners and academics
* publications the reader in the course of the most modern advancements in electroactive-polymer-based technology
* Designed for ease of use with sections on basics, fabrics, units, types and functions

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Additional resources for Dielectric Elastomers as Electromechanical Transducers: Fundamentals, Materials, Devices, Models and Applications of an Emerging Electroactive Polymer Technology

Example text

In order to design dielectric elastomer actuators it is necessary to keep in mind the possibilities and limitations of the applied elastomeric material. Different aspects of the choice of material as well as the preparation procedure are discussed in the present chapter. 1 Elastomers The empirical definition of an elastomer is a macromolecular material that deforms substantially when exposed to small mechanical loads. Furthermore, the material almost recovers its original shape shortly after the load has been released.

53, 1557. Hourston, D. J. and Schafer, F. U. (1996). Poly(ether urethane)/poly(ethyl methacrylate) interpenetrating polymer networks: morphology, phase continuity and mechanical properties as a function of composition. Polymer, 37, 3521. Larsen, A. , Sommer-Larsen, P. and Hassager, O. (2004). Some experimental results for the end-linked polydimethylsiloxane network system. e-Polymers, 050. Chambon, F. and Winter, H. H. (1987). Linear viscoelasticity at the gel point of a crosslinking PDMS with imbalanced stoichiometry.

7] discussed how to tune rubber elasticity by manipulating the amount of cross-linking and mechanical processing and therefore the resulting stress–strain curve. This ‘tuning’ can allow for optimizing the breakdown and modulus, and could be of particular value in optimizing performance for given specific applications. g. [8]). Unfortunately, increases in dielectric constant are typically accompanied by an undesirable decrease in breakdown strength and an increase in electrical losses. Thus, while the performance of such polymers at a given voltage or field is good, the overall maximum strains or stresses produced by such materials are typically not as high as the lower-dielectric-constant materials already in use.

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Dielectric Elastomers as Electromechanical Transducers: Fundamentals, Materials, Devices, Models and Applications of an Emerging Electroactive Polymer Technology by Federico Carpi, Danilo De Rossi, Roy Kornbluh, Ronald Edward Pelrine, Peter Sommer-Larsen


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