Results 51 to 60 of about 4,736,953 (298)
Rotor-System Log-Decrement Identification Using Short-Time Fourier-Transform Filter
International Journal of Rotating Machinery, 2015 With the increase of the centrifugal compressor capability, such as large scale LNG and CO2 reinjection, the stability margin evaluation is crucial to assure the compressor work in the designed operating conditions in field.
Qihang Li +3 more
doaj +1 more source
On the self-propulsion of an -sphere micro-robot [PDF]
Journal of Fluid Mechanics, 2013 AbstractThe aim of this paper is to describe the self-propulsion of a micro-robot (or micro-swimmer) consisting of $N$ spheres moving along a fixed line. The spheres are linked to each other by arms with their lengths changing periodically. We use the asymptotic procedure containing the two-timing method and a distinguished limit.
openaire +3 more sources
Adaptive Foam 3D Printing of Ultralight and Multifunctional Materials
Advanced Engineering Materials, EarlyView.Adaptive foam 3D printing, enabled by expandable microspheres, imparts cellular structures to thermoplastic and thermosetting polymers, manufactured through a variety of processes including fused filament fabrication, direct ink writing, digital light processing, and inkjet printing.
Nariman Rajabifar, Amir Ameli
wiley +1 more source
Geometric Visualization of Self-Propulsion in a Complex Medium
Physical Review Letters, 2013 4 pages, 5 figures, published in Physical Review Letters ...
Hatton, Ross L. +3 more
openaire +4 more sources
Cooperative self-propulsion of active and passive rotors [PDF]
Soft Matter, 2012 Using minimal models for low Reynolds number passive and active rotors in a fluid, we characterize the hydrodynamic interactions among rotors and the resulting dynamics of a pair of interacting rotors. This allows us to treat in a common framework passive or externally driven rotors, such as magnetic colloids driven by a rotating magnetic field, and ...
Fily, Yaouen +2 more
openaire +2 more sources
Fabrication Routes for Ionic Conducting Fiber Strain Sensors
Advanced Engineering Materials, EarlyView.Ionic conducting fiber strain sensors (ICFSs) offer compliant, textile‐integrable sensing. Thus far, the commercialization of ICFSs has been constrained by fiber fabrication routes. This review provides a fabrication‐centric analysis of ICFSs correlating processing strategies with material properties and scalability.
Leo John Kershaw +3 more
wiley +1 more source
Displaced geostationary orbit design using hybrid sail propulsion [PDF]
, 2011 Due to an increase in number of geostationary spacecraft and limits imposed by east-west spacing requirements, the geostationary orbit is becoming congested.
Biggs, James +3 more
core +3 more sources
Fish biorobotics: kinematics and hydrodynamics of self-propulsion [PDF]
Journal of Experimental Biology, 2007 SUMMARYAs a result of years of research on the comparative biomechanics and physiology of moving through water, biologists and engineers have made considerable progress in understanding how animals moving underwater use their muscles to power movement, in describing body and appendage motion during propulsion, and in conducting experimental and ...
Lauder, George +3 more
openaire +4 more sources
From Food to Power: Hydrogel Thermoelectrics for Ingestible Electronics
Advanced Functional Materials, EarlyView.We introduce a fully edible thermoelectric–electrochromic platform that harvests heat from food and converts it into a visible color change. N‐type and p‐type hydrogel thermoelectric generators connected in series power anthocyanin‐based electrochromic displays, demonstrating the feasibility of safe, biodegradable, ingestible systems for on‐food ...
Antonia Georgopoulou +3 more
wiley +1 more source
Turbulence in active fluids caused by self-propulsion [PDF]
Asymptotic Analysis, 2019 A rigorous analytical justification of turbulence observed in active fluids and caused by self-propulsion is presented. We prove existence of unstable wave modes for the generalized Stokes and Navier–Stokes systems by developing an approach in spaces of Fourier transformed Radon measures.
Christiane Bui +2 more
openaire +2 more sources