Results 91 to 100 of about 19,020 (254)
High-efficiency dielectrophoretic ratchet
Physical Review E, 2012 Brownian ratchets enable the use of thermal motion in performing useful work. They typically employ spatial asymmetry to rectify nondirected external forces that drive the system out of equilibrium (cf. running marbles on a shaking washboard). The major application foreseen for Brownian ratchets is high-selectivity fractionation of particle or molecule
Germs, W.C. +7 more
openaire +3 more sources
Knee Surgery, Sports Traumatology, Arthroscopy, EarlyView.Abstract Purpose A single hip–knee–ankle angle (HKA) angle does not reflect the biomechanics of native, arthritic or prosthetic knees. Since HKA varies throughout flexion, dynamic coronal alignment is best represented by a kinematic curve plotting HKA against the range of motion.
Petros Ismailidis +3 more
wiley +1 more source
Ratcheting Assessment of Medium Carbon and Austenitic Steel Alloys at Elevated Temperatures
Journal of Manufacturing and Materials ProcessingThe present study intends to evaluate the ratcheting of ER9 wheel medium carbon steel and austenitic steel samples at room and elevated temperatures subjected to uniaxial loading cycles through the use of the Ahmadzadeh–Varvani (A–V) kinematic hardening ...
Petar Jevtic, Ahmad Varvani-Farahani
doaj +1 more source
Wear Assessment in High Cycle Rolling Contact Fatigue Using Semi-Analytical Approach [PDF]
Transactions of the VŠB-Technical University of Ostrava, Mechanical Series, 2013 Presented paper deals with ratcheting prediction in the field of contact fatigue for the case of line contact. For the stated purposes, the wear model proposed by A. Mazzu [1] is used, which stands out for its simplicity and time efficiency. The model is
Michal ŠOFER +2 more
doaj +1 more source
High cycle fatigue and ratcheting interaction of laser powder bed fusion stainless steel 316L:Fracture behaviour and stress-based modelling [PDF]
, 2018 Variations in the physical and mechanical properties of parts made by laser power bed fusion (L-PBF) could be affected by the choice of processing or post-processing strategies.
Hardacre, David +5 more
core +1 more source
Casimir-Force-Driven Ratchets [PDF]
Physical Review Letters, 2007 We explore the non-linear dynamics of two parallel periodically patterned metal surfaces that are coupled by the zero-point fluctuations of the electromagnetic field between them. The resulting Casimir force generates for asymmetric patterns with a time-periodically driven surface-to-surface distance a ratchet effect, allowing for directed lateral ...
openaire +4 more sources
Small, EarlyView.ABSTRACT The rapid expansion of the Internet of Things (IoT) and wearable electronics necessitates sustainable power sources to replace the limited electrochemical battery. While mechanical energy harvesting offers a promising solution, traditional harvesters face challenges of irregular and low−frequency environmental sources. This review presents the
Yongbin Han +2 more
wiley +1 more source
Rocking feedback-controlled ratchets
Physical Review E, 2009 LaTeX, 8 pages, 8 figures. To appear in Phys.
Feito, M. +2 more
openaire +6 more sources
Australian Journal of Public Administration, EarlyView.Abstract Remarkably little is known about what factors drive success or failure in foreign policy. In part, this is because there is little fundamental agreement on what constitutes success or failure in this domain in the first place. This article engages with these shortcomings by comparing two similar regional order‐building initiatives overseen by ...
Benjamin Day
wiley +1 more source
Applied MechanicsThe present study evaluates the ratcheting response of notched cylindrical samples made of 1045 steel alloy subjected to asymmetric loading cycles using the kinematic hardening framework, coupled with Neuber’s rule.
Faezeh Hatami, Ahmad Varvani-Farahani
doaj +1 more source