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Category
Material Name
Contact Information
EAP Category
Response Time (sec)
Configuration
Applications
Uses
Operation at various
temperatures, humidity and
pressure conditions
Power Requirements
Fracture Toughness
Maximum Bending Curvature
(1/mm.V)
Maximum Strain (%)
Maximum Pressure or Stress
(MPa)
Tensile elastic (or Young’s)
Modulus
Specific Elastic Energy Density
(J/g)
Elastic Energy Density (J/cm^3)
Electrically Induced Force [g], or
Charge (C) {stress}
Stress/strain curve {stiffness
graph}
Damping
Maximum Efficiency %
Electrical Response
Power Created
Life Cycle
Permanent Deformation
Coefficient of thermal expansion
[ppm/C]
Dielectric breakdown strength [V]
Impedance spectra [ohms and
phase angle]
Nonlinear Current [A]
Dielectric Constant (relative
permittivity)
Density
Thickness (electrode & EAP)
Availability
Relative Cost
Information
Acrylic Dielectric Elastomer
SRI International, www.sri.com/crad.html
Dielectric elastomer
microsecond range
Block
Actuator, speaker
Artificial muscle, loudspeaker (tweeter)
-10 to 70 °C, humidity not a problem, pressure causes a
lowered expansion rate
10-150 v/micrometer
resilient, elastic
n/a
380, 800 for elongation
7.2
n/a
3.4
3.4
.18 at 20 Hz
82 at 80 Hz
Applied voltage will compress the electrodes; this pressure, p =
e(r) * e(o) * E^2 = e(r) * e(o) * (V/t)^2; where e(r) =permittivity of
free space, e(o) relative permittivity (dielectric constant) of the
polymer; E is the applied electric field; v is the applied voltage,
and t is the film thickness.
for large strain deformations, electrical energy generated per
unit volume of material, e, is e = e(r) * e(o) * E^2 = e(r) * e(o) *
(V/t)^2; where e(r) =permittivity of free space, e(o) relative
permittivity (dielectric constant) of the polymer; E is the applied
electric field; v is the applied voltage, and t is the film thickness.
10 million+ cycles, actuator; 130,000 generator
none
n/a
n/a
n/a
n/a
n/a
1.5 G/cc
n/a
Commercially Produced, AMI Technologies
low
Controllability
Additional Information
high
This information was taken from the following references. None
of it was actual data, and some data needed to be extrapolated
from known data. Large improvements have been made since
the publication of this data, but that is unavailable at this
moment.
References (If appropriate)
R. Kornbluh, R. Pelrine, Q. Pei, and S.V. Shastri, "Application
of Dielectric Elastomer EAP Actuators," in "Electroactive
Polymer (EAP) Actuators as Artificial Muscles," ed. Y. BarCohen, Ch 16, pp. 457-495, SPIE Press, Bellingham,
Washington, 2001.
R. Korbluh, R. Pelrine, Q. Pei, R. Heydt, S. Stanford, S. Oh,
and J. Eckerle, "Electroelastomers: Applications of Dielectric
Elastomer Transducers for Actuation, Generation and Smart
Structures." SRI International, Menlo Park, California, 2001.
Y. Bar-Cohen, "EAP History, Current Status, and
Infrastructure" in "Electroactive Polymer (EAP) Actuators as
Artificial Muscles," Ed. Y. Bar-Cohen, Ch 1, pp. 3-12, SPIE
Press, Bellingham, Washington, 2001.
Y. Bar-Cohen, S. Sherrit, S. Lih, "Characterization of the
Electromechanical Properties of EAP materials." Proceedings
of EAPAD, SPIE Press, Bellingham, Washington, 2001.