1. Date of download: 10/22/2017
Copyright © ASME. All rights reserved.
From: Enhanced Compressive Sensing of Dielectric Elastomer Sensor Using a Novel Structure
J. Appl. Mech. 2015;82(10): doi: /
Figure Legend:
The cross section of the sensor element with three states. (a) Reference state: the outer radius of the sensor element without prestretch is R0. An arbitrary particle of the sensor element is indicated by the distance R away from the center. (b) Prestretched state: the outer radius of the sensor element is prestretched to (b). (c) Current state: the out-of-plane axisymmetric configuration of the deformed sensor element subjected to external force F. Coordinates (r, z) are adopted.

2. Date of download: 10/22/2017
Copyright © ASME. All rights reserved.
From: Enhanced Compressive Sensing of Dielectric Elastomer Sensor Using a Novel Structure
J. Appl. Mech. 2015;82(10): doi: /
Figure Legend:
The primary part of the sensor element: a silicone rubber membrane covered by carbon grease on both sides. A rigid disk is attached on its center to accommodate the weight. Two rigid rings sandwich the sensor element to keep its configuration. Tinfoil is used to connect the two electrodes to the capacitance meter.

3. Date of download: 10/22/2017
Copyright © ASME. All rights reserved.
From: Enhanced Compressive Sensing of Dielectric Elastomer Sensor Using a Novel Structure
J. Appl. Mech. 2015;82(10): doi: /
Figure Legend:
The schematic diagram of the components of the DE sensor. (a) The covering layer with cylindrical bar attached. (b) The membrane layer covered by electrodes on both sides. (c) The base layer with cylindrical hole.

4. Date of download: 10/22/2017
Copyright © ASME. All rights reserved.
From: Enhanced Compressive Sensing of Dielectric Elastomer Sensor Using a Novel Structure
J. Appl. Mech. 2015;82(10): doi: /
Figure Legend:
The experimental results of the variation of capacitance versus load for the sensor element with (a) different prestretches of the sensor element are adopted while aspect ratio b/a is kept constant as 4, and (b) different aspect ratios are adopted while prestretch is held as λpre = 1.2. C0 is the capacitance of the sensor element without load.

5. Date of download: 10/22/2017
Copyright © ASME. All rights reserved.
From: Enhanced Compressive Sensing of Dielectric Elastomer Sensor Using a Novel Structure
J. Appl. Mech. 2015;82(10): doi: /
Figure Legend:
The free-body diagrams of the sensor element describing the mechanical equilibrium of the configuration: (a) the deformed state and (b) half of the circular truncated cone. φ(R) is the tangential slope of the membrane with respect to the horizontal direction. s1 (R) and s2 (R) are the nominal stresses along the radial and circumferential directions of the membrane. θ denotes the angular position.

6. Date of download: 10/22/2017
Copyright © ASME. All rights reserved.
From: Enhanced Compressive Sensing of Dielectric Elastomer Sensor Using a Novel Structure
J. Appl. Mech. 2015;82(10): doi: /
Figure Legend:
The comparison of the normalized capacitance versus load relationships of the sensor elements predicted by both the analytical model and experiment. Three prestretches and three aspect ratios are adopted.

7. Date of download: 10/22/2017
Copyright © ASME. All rights reserved.
From: Enhanced Compressive Sensing of Dielectric Elastomer Sensor Using a Novel Structure
J. Appl. Mech. 2015;82(10): doi: /
Figure Legend:
The capacitance versus time relationship of the sensor element (aspect ratio b/a = 4 with b = 20 mm, and λpre = 1.2) after 0, 500, 1000, and 2000 cycles under displacement-controlled cyclic loading