Investigation of the mechanical properties of the Ni–P–CNTs coated copper composite materials: Experiments and modeling

Li, Tiefeng; Qu, Shaoxing; Li, Zhenhua; Tao, Wenjie; Wang, Miao

doi:10.1016/j.msea.2008.09.035

Cited by 19 publications

(12 citation statements)

References 40 publications

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“…Dielectric Elastomers (DEs) are in a specific class of Electro-Active Polymers (EAPs) that are of particular research interest due to their simplicity of structure, low mass/inertia, robustness, noise-free operation, and actuation force density that is similar to that of human muscles [1][2][3][4][5][6][7][8][9][10]. A Dielectric Elastomer Actuator (DEA) may be fabricated from a single layer of DE that is coated with a compliant conductive material on both sides.…”

Section: Introductionmentioning

confidence: 99%

Novel Arrangements for High Performance and Durable Dielectric Elastomer Actuation

Zhang

Huang

et al. 2016

Actuators

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This paper advances the design of Rod Pre-strained Dielectric Elastomer Actuators (RP-DEAs) in their capability to generate comparatively large static actuation forces with increased lifetime via optimized electrode arrangements. RP-DEAs utilize thin stiff rods to constrain the expansion of the elastomer and maintain the in-plane pre-strain in the rod longitudinal direction. The aim is to study both the force output and the durability of the RP-DEA. Initial design of the RP-DEA had poor durability, however, it generated significantly larger force compared with the conventional DEA due to the effects of pre-strain and rod constraints. The durability study identifies the in-electro-active-region (in-AR) lead contact and the non-uniform deformation of the structure as causes of pre-mature failure of the RP-DEA. An optimized AR configuration is proposed to avoid actuating undesired areas in the structure. The results show that with the optimized AR, the RP-DEA can be effectively stabilized and survive operation at least four times longer than with a conventional electrode arrangement. Finally, a Finite Element simulation was also performed to demonstrate that such AR design and optimization can be guided by analyzing the DEA structure in the state of pre-activation.

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Section: Introductionmentioning

confidence: 99%

Novel Arrangements for High Performance and Durable Dielectric Elastomer Actuation

Zhang

Huang

et al. 2016

Actuators

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“…As a specific class of materials in the electro-active polymer (EAP) family, dielectric elastomers (DEs) posses the attributes of large deformation, light weight and noise-free operation [1][2][3][4][5][6][7][8][9]. The electromechanical coupling behavior of DEs has been studied extensively in numerous applications, including soft robotics [10][11][12][13][14][15], artificial muscles [16][17][18], energy harvesters [19][20].…”

Section: Introductionmentioning

confidence: 99%

Novel dielectric elastomer structure of soft robot

Xie

Huang

et al. 2015

SPIE Proceedings

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Inspired from the natural invertebrates like worms and starfish, we propose a novel elastomeric smart structure. The smart structure can function as a soft robot. The soft robot is made from a flexible elastomer as the body and driven by dielectric elastomer as the muscle. Finite element simulations based on nonlinear field theory are conducted to investigate the working condition of the structure, and guide the design of the smart structure. The effects of the prestretch, structural stiffness and voltage on the performance of the smart structure are investigated. This work can guide the design of soft robot.

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“…3 The primary objectives of composite electroless coatings have been to improve the wear resistance and/or corrosion resistance and/or lubricity of machinery parts. 4,8 Among different second phases codeposited with Ni-P, carbon nanotubes (CNTs) and SiC particles have the highest potential. 8 Owing to their high wear resistance and the low cost of ceramic powder, metal matrix composite coatings containing SiC have been investigated for the protection of friction parts.…”

Section: Introductionmentioning

confidence: 99%

Porosity measurement of electroless Ni–P coatings reinforced by CNT or SiC particles

Zarebidaki

Allahkaram

2012

Surface Engineering

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Ni-P composite coatings containing SiC nanoparticles or carbon nanotubes (CNTs) were deposited on steel substrates via electroless plating technique. An electrochemical polarisation technique was employed to measure the porosity of Ni-P and composite coatings in as plated condition. The technique was based on the changes observed in the corrosion potential with varying cathode and/or anode area on a bimetallic corroding system. Electrochemical impedance spectroscopy (EIS) test was used to assess the corrosion resistance of the coatings. Results showed that incorporation of nanoscaled second phases could decrease the area fraction of porosity from 2?5610 25 for Ni-P coating to 2610 27 for Ni-P-CNT coating. Ni-P-CNT coating exhibited the least porosity that it could be attributed to the morphology of CNTs and their ability to fill out the pores more effectively as compared to SiC nanoparticles. EIS results were in agreement with the porosity results as Ni-P-CNT coatings illustrated the highest corrosion resistance.

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Investigation of the mechanical properties of the Ni–P–CNTs coated copper composite materials: Experiments and modeling

Cited by 19 publications

References 40 publications

Novel Arrangements for High Performance and Durable Dielectric Elastomer Actuation

Novel Arrangements for High Performance and Durable Dielectric Elastomer Actuation

Novel dielectric elastomer structure of soft robot

Porosity measurement of electroless Ni–P coatings reinforced by CNT or SiC particles

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