Fracture toughness, hysteresis and stretchability of dielectric elastomers under equibiaxial and biaxial loading

Ahmad, Dilshad; Sahu, Sujit K.; Patra, Karali

doi:10.1016/j.polymertesting.2019.106038

Cited by 36 publications

(11 citation statements)

References 43 publications

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“…Hysteresis of the sensor was investigated for maximum strains of 20%, 50%, and 100%. Small hysteresis was observed at a strain of 20%, while a larger hysteresis was observed at 50 and 100%, as shown in Figure 8 b [ 41 , 42 ]. Figure 8 c shows

in a repeat test with 1000 cycles of 100% strain.…”

Section: Resultsmentioning

confidence: 99%

Stretchable Strain Sensor with Small but Sufficient Adhesion to Skin

Nishikawa

Yamane

Matsuhisa

et al. 2023

Sensors

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Stretchable strain sensors that use a liquid metal (eutectic gallium–indium alloy; E-GaIn) and flexible silicone rubber (Ecoflex) as the support and adhesive layers, respectively, are demonstrated. The flexibility of Ecoflex and the deformability of E-GaIn enable the sensors to be stretched by 100%. Ecoflex gel has sufficiently large adhesion force to skin, even though the adhesion force is smaller than that for commercially available adhesives. This enables the sensor to be used for non-invasive monitoring of human motion. The mechanical and electrical properties of the sensor are experimentally evaluated. The effectiveness of the proposed sensors is demonstrated by monitoring joint movements, facial expressions, and respiration.

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in a repeat test with 1000 cycles of 100% strain.…”

Section: Resultsmentioning

confidence: 99%

Stretchable Strain Sensor with Small but Sufficient Adhesion to Skin

Nishikawa

Yamane

Matsuhisa

et al. 2023

Sensors

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“…The inspection of the compression process indicates that the prepreg has a significant velocity-dependent compression property. It is due to the viscoelastic behavior of the resin and fiber bed in the prepreg laminates, which include the entanglement of resin's molecular chains and the deformation and flow resistance of the fiber bed [32,33]. The results related to the relaxation behavior of prepreg are depicted in figure 8(B).…”

Section: Resultsmentioning

confidence: 99%

A numerical approach to characterize the compression and relaxation behavior of uncured prepreg laminates in the process of hot press-forming

Liu

Yue

et al. 2022

Mater. Res. Express

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In the pre-forming process of uncured prepreg laminates with hot press, the compaction stress is an important parameter that affects the performance and quality of the final product. Therefore, it is necessary to explore the compaction response of the prepreg during manufacturing processes. In this study, the compression and relaxation viscoelastic behaviors of uncured prepreg laminates were investigated in different temperatures, displacements, velocities, and thicknesses. The results show that the power law model and the fractional viscoelastic model could accurately describe the compression and relaxation behaviors, respectively. The theoretical fitting curves match very well with experimental data at each condition and the R-squared value is greater than 0.95. The effect mechanism of compression and relaxation viscoelastic behaviors is analyzed and the obtained results could provide a reference for the process of hot press-forming and numerical simulation.

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“…We next use a combination of experimental data and our material model to estimate the toughness of our sample. The toughness of a silicon elastomer of similar composition in pure shear was measured to be 3.58 KJ/m 2 [11]. From the provided stress-stretch plots, we estimate their modulus to be 0.25 MPa.…”

Section: Materials Model and Mechanical Propertiesmentioning

confidence: 97%

A Stretchable and Tough Small-Scale Magnetic Actuator for Biomedical Applications

Berbner¹,

Dennis

2022

J Stud Res

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A stretchable, tough, small-scale magnetic actuator capable of multimodal locomotion under magnetic fields is proposed. The actuator consists of a silicone elastomer (Ecoflex 00-10) embedded with neodymium-iron-boron (NdFeB) particles and coated with a poly(2-methacryloyloxyethyl phosphorylcholine) (PMPC) triple network hydrogel layer. The hydrogel layer is biocompatible and decreases the surface friction of the actuator. Mechanically, the actuator is highly stretchable, tough, and fatigue-resistant. The application of the actuator in drug delivery is demonstrated.

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Fracture toughness, hysteresis and stretchability of dielectric elastomers under equibiaxial and biaxial loading

Cited by 36 publications

References 43 publications

Stretchable Strain Sensor with Small but Sufficient Adhesion to Skin

Stretchable Strain Sensor with Small but Sufficient Adhesion to Skin

A numerical approach to characterize the compression and relaxation behavior of uncured prepreg laminates in the process of hot press-forming

A Stretchable and Tough Small-Scale Magnetic Actuator for Biomedical Applications

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