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Materiale Plastice
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Materiale Plastice (Mater. Plast.), Year 2013, Volume 50, Issue 2,





VLAD CARLESCU1 FLORIN BREABAN, GHEORGHE PRISACARU, GELU IANUS, MARIA CAZACU Electromechanical Strain Response of PDMS/TiO2/SiO2 at Variable Electric Fields


Abstract:
This paper refers to the electromechanical strain response of PDMS/TiO2/SiO2 composites as an electroactive polymer actuator. Lightweight electro-active polymers (EAPs) are ideal for control surface since they offer high strain rate, fast response, high elastic energy density and ease of manufacture <1,2>. We investigate the frequency response and vibrational modes of rectangular films with aluminum electrodes using Scanning Laser Doppler Vibrometry (SLDV) technique described elsewhere <3,4>. The results showed a similar behaviour with those of acrylic and silicone films coated with carbon-based compliant electrodes from literature. Field-induced vibrational strains decrease with frequency due to the increase in stiffness of sample and change of dielectric permittivity. These materials are possible candidates in polymer actuators for micro-pump and micro-valve applications in MEMS. Keywords: electroactive polymers, dielectric elastomers, non-destructive technique, frequency response, vibrational modes



Issue: 2013 Volume 50, Issue 2
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