Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 41 for “"artificial muscles"”.
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Fatigue Characteristics of Pressurized Artificial Muscles
Pressurized artificial muscles show promise in both standard aircraft actuation operations and in morphing structures as an alternative to currently used actuation systems due to their high power-to-weight ratio. Pressurized artificial muscles have already demonstrated the necessary force …
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Development of laboratory spine with artificial muscles
… Thus the aim of this research is to develop an artificial laboratory spine that will have the same physical and biomechanical properties as the human spine. Validation of computer model is difficult hence an active artificial laboratory spine is being developed. A number of spinal elements have …
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Stochastic recruitment strategies for controlling artificial muscles
This thesis presents a new architecture for controlling active material actuators inspired by biological motor recruitment. An active material is broken down into many small fibers and grouped together to form one large actuator. Each of these fibers is held in a binary state, either relaxed or …
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Passive upper-limb exoskeleton based on Pneumatic Artificial Muscles
L'abstract è presente nell'allegato / the abstract is in the attachment
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High performance materials for artificial muscles and energy storage devices
Artificial muscles (i.e., stimuli-responsive materials) are muscle-like materials and devices that mimic muscle's functionality (e.g., contraction, rotation, and bending) in different aspects. Some of the common performance metrics used for evaluating artificial muscles are cycle life, …
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Creating Human-Like Facial Expressions Utilizing Artificial Muscles and Skin
… and takes into account the skin stiffness. The artificial skin materials for facial expression were synthesized using platinum-cured silicone elastomeric material (Reynolds Advanced Materials Inc.) with base consisting of mainly polyorganosiloxanes, amorphous silica and platinum-siloxane complex …
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Tailoring Artificial Muscles for the Design and Development of Soft Underwater Robots
… First, we start by characterizing unconventional artificial muscles used as the main actuators in the robots such as the twisted and coiled polymer fishing line (TCPFL) and NiTi shape memory alloy (SMA) actuators. As compared to current conventional actuators such as stepper motors and pnuematic …
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Soft pneumatic artificial muscles with low threshold pressures for a cardiac compression device
… and characterization of fully soft pneumatic artificial muscles (PAMs) with low threshold pressures that are intended for direct cardiac compression (DCC). McKibben type PAMs typically have a threshold pressure of at least lOOkPa and require rigid end fittings which may damage soft tissue and …
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Design and Analysis of an Orderly Recruitment Valve for Bio-inspired Fluidic Artificial Muscles.
North Carolina State University Theses Mechanical and Aerospace Engineering.
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Healing-on-Demand Polymer Composites Based on Shape Memory Polyurethane Fibers and Polymeric Artificial Muscles
… based on shape memory polyurethane fibers and artificial muscles are investigated, for understanding and developing a novel healing-on-demand composite so that it would be used for industrial applications that could heal structural-length scale damage and leaking autonomously, repeatedly, …
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Polysiloxane-based liquid crystal block copolymers for piezoelectric and mechano-optical applications
… as actuators. These devices can be used as artificial muscles, in microrobotics, in micromachinery, in MEMS, and in other applications that require gates or valves. Artificial muscles have previously been prepared using multilayer composites of conducting polymers and non-conducting …
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Soft Robotics Applied to the Development of a Diaphragm Assist System
… soft actuator mechanisms. We find that pneumatic artificial muscles are capable of driving the diaphragm function in a respiratory simulator and replicating the work of breathing. Taking inspiration from this biomimetic system, pneumatic artificial muscles are designed and optimized for use in the …
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Novel Fabrication and Characterization Methods for Conducting Polymer Nanostructures and Microstructures
… the benefit of humanity - such as, for example, artificial muscles and lab-on-a-chip diagnostics - we require the ability to reliably fabricate and understand these materials at the micro and nano scales. In this thesis I present research towards that goal, by developing novel experimental …
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Inkjet printing for fabrication of organic photonics and electronics
… react with each other, for the use in making artificial muscles and for the developments of inkjet combinatorial techniques. Many factors including surface tension of the printed solution, substrate surface properties, and drying conditions have a direct effect on the final quality and …
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Electroactive polymer actuators: theory and computations
… where they are sometimes referred to as “artificial muscles”. We present continuum-mechanical theories and finite element computations for three common types of electroactive polymer actuators: (1) ionic polymer-metal composites (IPMCs), (2) piezoelectric polymers, and (3) dielectric …
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Dielectric elastomers for space robotics applications
… composites offer many advantages as artificial muscles; they are lightweight, have a high work density, and are capable of artificial proprioception. Taking inspiration from nature, we have developed low-mass robots capable of performing complex motion and compacting to a fraction of …
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The development and characterization of soft robotic contractile actuators
… of a soft-robotic myocardium and pneumatic artificial muscles (PAMs) that replicate the physiological motion of the heart. We were able to generate physiological twisting motion in a confined geometry, but additional actuators would be required to generate physiological force for blood …
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Development of conducting polymer based biomimetic muscles and fabrication techniques for an artificial pectoral fish fin
… which make it possible to grow rather than build artificial muscles for an articulated device. Their potential for co-fabrication make it possible to implement simpler more integrated designs as they have been shown to provide all the basic elements required for a Biomimetic robot including: force …
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Large contraction conducting polymer molecular actuators
The development of powerful and efficient artificial muscles that mimic Nature will profoundly affect engineering sciences including robotics and prosthetics, propulsion systems, and microelectromechanical systems (MEMS). Biological systems driven by muscle out-perform human-engineered systems in …
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Constitutive modeling of active polymers
… variety of fields, most notably in the field of artificial muscles. This thesis first reviews the basic principles of continuum mechanics, followed by a review of the classical and current statistical mechanics based constitutive models for rubber-like materials. A theoretical model for …
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