Results 1 to 10 of about 35,887 (91)

Characterization of an Antagonistic Actuation System with Nonlinear Compliance for an Upper-Arm Exoskeleton

open access: yesActuators, 2023
The parallel connection of technical and biological systems with a comparable mechanical behavior offers the possibility of reducing the interaction forces between those systems.
Max Jäger   +4 more
doaj   +1 more source

Generation of high order geometry representations in Octree meshes [PDF]

open access: yesPeerJ Computer Science, 2015
We propose a robust method to convert triangulated surface data into polynomial volume data. Such polynomial representations are required for high-order partial differential solvers, as low-order surface representations would diminish the accuracy of ...
Harald G. Klimach   +2 more
doaj   +2 more sources

Dynamic Process Simulation of a Molten-Salt Energy Storage System

open access: yesApplied Sciences, 2021
The main objective of this work was the construction of a numerical model using Advanced Process Simulation Software to represent the dynamic behaviour of a thermal storage system (TSS).
Wisam Abed Kattea Al-Maliki   +3 more
doaj   +1 more source

Manipulation and control of droplets on surfaces in a homogeneous electric field

open access: yesNature Communications, 2022
Control of droplet coalescence is a major challenge of droplet microfluidics. Here, the authors show that homogenous external electric field can induce dipoles inside droplets, which can be used to withdraw samples from an array of droplets.
Johannes Hartmann   +2 more
doaj   +1 more source

Manipulation of single sub-femtolitre droplets via partial coalescence in a direct-current electric field

open access: yesFlow, 2021
It is demonstrated how aqueous droplets with volumes down to the sub-femtolitre range can be manipulated, including the withdrawal of minute samples from the droplets.
Mostafa Shojaeian, Steffen Hardt
doaj   +1 more source

Influence of Residual Stresses on the Crack Initiation and Short Crack Propagation in a Martensitic Spring Steel

open access: yesMetals, 2022
The crack initiation and short crack propagation in a martensitic spring steel were investigated by means of in-situ fatigue testing. Shot peened samples as well as untreated samples were exposed to uniaxial alternating stress to analyze the impact of ...
Anna Wildeis   +2 more
doaj   +1 more source

SenGlove—A Modular Wearable Device to Measure Kinematic Parameters of The Human Hand

open access: yesBioengineering, 2023
For technical or medical applications, the knowledge of the exact kinematics of the human hand is key to utilizing its capability of handling and manipulating objects and communicating with other humans or machines.
Jonas Paul David   +2 more
doaj   +1 more source

Influence of Particle Reinforcement and Heat Treatment on the Wear Resistance of Inductively Melted Hardpaint Coatings

open access: yesMetals, 2020
Wear-resistant coatings can reduce the high economic damage caused by wear processes. In this study, various protective layers based on the alloy X400CrVMo17-15-2 were investigated. Commonly, the prealloyed metal powder is used for plasma transferred arc
Patrick Schwarz   +2 more
doaj   +1 more source

Weak Solutions and Their Kinetic Energy Regarding Time-Periodic Navier–Stokes Equations in Three Dimensional Whole-Space

open access: yesMathematics, 2021
The existence of weak time-periodic solutions to Navier–Stokes equations in three dimensional whole-space with time-periodic forcing terms are established. The solutions are constructed in such a way that the structural properties of their kinetic energy
Mads Kyed
doaj   +1 more source

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