Arquimea Ingenieria

Leganés, Spain

Arquimea Ingenieria

Leganés, Spain
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Otero T.F.,Technical University of Cartagena | Schumacher J.,Arquimea Ingenieria | Pascual V.H.,Technical University of Cartagena
RSC Advances | Year: 2016

Polypyrrole-dodecylbenzenesulphonate-multi-walled carbon nanotube (PPy-DBS-MWCNT) films, thick enough (48.6 μm) to be peeled off from the steel electrode, were electrogenerated. Bilayer PPy-DBS-MWCNT/tape artificial muscles were constructed and submitted to potential sweeps with parallel video-recording of their angular displacements. The coulodynamic (angle-charge) responses reveal that the composite shrinks/swells by oxidation/reduction, respectively, due to the reaction-driven cation exchange. Reversible bending movements of 106° occur under faradaic (linear) control of the consumed charge. Minor deviations and hysteresis were identified with irreversible reactions and osmotic processes. The muscle is a faradaic motor. © The Royal Society of Chemistry 2016.


Nava N.,Arquimea Ingenieria | Collado M.,Arquimea Ingenieria | Cabas R.,Arquimea Ingenieria
Journal of Materials Engineering and Performance | Year: 2014

A new HDRA based on SMA technology, called REACT, has been designed for development of loads and appendixes in space applications. This design involves a rod supported by spheres that block its axial movement during a preload application. The rod shape allows misalignment and blocks the rotation around axial axis for a proper installation of the device. Because of the high preload requirements for this type of actuators, finite element analysis (FEA) has been developed in order to check the structure resistance. The results of the FEA have constrained the REACT design, in terms of dimensions, materials, and shape of the mechanical parts. A complete test campaign for qualification of REACT is proposed. Several qualification models are intended to be built for testing in parallel. Therefore, it is a way to demonstrate margins which allows getting some statistics. © 2014 ASM International.


Nava N.,Arquimea Ingenieria | Collado M.,Arquimea Ingenieria | Cabas R.,Arquimea Ingenieria
Journal of Materials Engineering and Performance | Year: 2014

Two different versions of the Pin Puller were designed during this activity, such as one with 100 N and other with 500 N of pull force. The design of both versions is based on spheres which support the pin at the initial position and a compression spring driving once the release takes place by means of the SMA. The mechanical design of the Pin Pullers has been conceived in order to optimize the device's weight, reduce the parts complexity, and achieve a suitable stiffness. A qualification test campaign for the Pin Puller with 500 N of pull force has been developed in order to check the success of the proposed mechanism for space applications. The main performed tests have been thermal-vacuum actuation, thermal-vacuum cycling, sine vibration, and random vibration. The Pin Puller has presented successful results of actuation during the test campaign © 2014 ASM International.

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