Dielectric Elastomers as Electromechanical Transducers: by Federico Carpi, Danilo De Rossi, Roy Kornbluh, Ronald Edward

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

This e-book presents a complete and up-to-date perception into dielectric elastomers; essentially the most promising sessions of polymer-based clever fabrics and applied sciences. This expertise can be utilized in a truly huge diversity of functions, from robotics and automation to the biomedical field.
The want for more advantageous transducer functionality has ended in huge efforts in the direction of the advance of units counting on fabrics with intrinsic transduction homes. those fabrics, usually termed as "smart" or "intelligent", contain more desirable piezoelectrics and magnetostrictive or shape-memory fabrics. rising electromechanical transduction applied sciences, in accordance with so-called ElectroActive Polymers (EAP), have received huge realization. EAP supply the opportunity of functionality exceeding different clever fabrics, whereas holding the associated fee and flexibility inherent to polymer fabrics. in the EAP kin, "dielectric elastomers", are of specific curiosity as they express strong performance, simplicity of constitution and robustness. Dielectric elastomer transducers are swiftly rising as high-performance "pseudo-muscular" actuators, valuable for other kinds of initiatives. additional, as well as actuation, dielectric elastomers have additionally been proven to supply designated chances for more suitable generator and sensing devices.
Dielectric elastomer transduction is permitting a huge diversity of recent functions that have been precluded to the other EAP or smart-material expertise until eventually recently.
This booklet offers a complete and up-to-date perception into dielectric elastomer transduction, overlaying all its basic elements. The ebook bargains with transduction rules, simple fabrics houses, layout of effective machine architectures, fabric and machine modelling, besides applications.
* Concise and finished remedy for practitioners and academics
* publications the reader throughout the most up-to-date advancements in electroactive-polymer-based technology
* Designed for ease of use with sections on basics, fabrics, units, versions and functions

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

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One must often make trade-offs among desired properties in selecting the ideal material. g. strain response greater than 10%). Compared with other polymers, polymer dielectrics based on commercially available silicones and acrylic elastomers show good overall performance characteristics and continue to be used for the most applications and studies. Comparing the two, silicones have very high speeds and exceptional temperature tolerance, but acrylics have higher strains and energy density. The limitation on acrylic speed of response is due to viscoelasticity.

Ron, P. and Scott, S. (2006). In New High-Performance Electroelastomer Based on Interpenetrating Polymer Networks, Ed. Bar-Cohen, Y. Proc. SPIE, p. 616808. , Roy, D. , Qibing, P. and Scott, S. (2001). In Dielectric Elastomers: Generator Mode Fundamentals and Applications, Ed. Bar-Cohen, Y. Proc. SPIE, pp. 148–156. , Xia, F. and Su, J. (2004). Electric EAP. In Electroactive Polymer Actuators as Artificial Muscle, Ed. Bar-Cohen, Y, Proc. SPIE Press, Bellingham, Washington, pp. 95–170. , Zhang, Q.

It is of course critical that the actuator be designed so that moisture cannot create a short circuit across the electrodes. Since the electrodes are exposed to high voltage, even a small amount of moisture could create a short. 7 FUTURE IMPROVEMENTS AND DISCUSSION While the discovery of commercially available silicones and acrylics as the basis of top performing classes of materials was reported in 1995 and 2000 for silicone and acrylic, respectively, these materials continue to attract the most interest for applications.

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