Results 71 to 80 of about 114,321,802 (286)

Design of a Multistable Finger Prosthesis with Programmable Metamaterials

open access: yesAdvanced Engineering Materials, EarlyView.
This research article shows the development of a multistable programmble metamaterial for the use as a finger prosthesis. The material was designed on different hierarchical levels where the influence of geometrical parameters and combination of mechanical elements was explored.
Franziska Wenz   +5 more
wiley   +1 more source

Morphology, Transport, and Dynamics of Protein Adsorption in Open‐Cell Metal Foam

open access: yesAdvanced Engineering Materials, EarlyView.
Stainless steel (SS) open‐cell foams are shown to adsorb more protein per unit area than previously reported 316L SS and chromium oxide surfaces under static and flow conditions. An integrated approach combining 3D pore imaging, flow simulation, and protein adsorption experiments characterizes the foam’s performance.
Chinmaya Prerana Inguva   +2 more
wiley   +1 more source

Prediction of screw loosening by measuring the insertion torque in non-osteoporotic patients: an in vitro study

open access: yesBMC Musculoskeletal Disorders
Background Pedicle screws are commonly used in spinal surgeries, but screw loosening remains a major concern, even in non-osteoporotic patients. Predicting pedicle screw stability via the insertion torque is a controversial topic, mainly studied on ...
Jan Ulrich Jansen   +5 more
doaj   +1 more source

Three-Dimensional Finite Element Analysis Of Hyrax Expander Design

open access: yesInternational Dental Journal
Aim or purpose: Simple geometric shapes facilitate the analysis of underlying principles. This study used finite element analysis with 3D beam elements to investigate the mechanics of different Hyrax expander designs and identify influencing factors for ...
Wanqi Wu, Jie Lin, Pingping Zhong
doaj   +1 more source

A Novel Approach to Estimate the Transition Temperature via Dynamic Nanoindentation

open access: yesAdvanced Engineering Materials, EarlyView.
A new dynamic nanoindentation‐based method was developed that uses the stiffness ratio as an indicator of the elastic–plastic deformation contributions at different temperatures. The approach successfully identified transition temperatures in ferritic steel and distinguished them from continuously ductile austenitic steel.
Stefan Zeiler   +4 more
wiley   +1 more source

Thermodynamic Design of Screw Motors for Constant Waste Heat Flow at Medium Temperature Level [PDF]

open access: yes, 2012
This paper focuses on the interaction of the geometric parameters of screw motors and the fluid parameters of the system in compliance with the boundary condition of constant waste heat flow.
Brümmer, Andreas, Hütker, Jan
core   +1 more source

Rotary 3D Printing With Integrated Electroplating

open access: yesAdvanced Engineering Materials, EarlyView.
A rotary material extrusion platform integrates localized copper electroplating with printing and encapsulation to fabricate cylindrical polymer–metal structures containing fully embedded, low‐resistance conductive pathways that enable internal Joule heating and thermally activated shape‐memory responses.
Antonio Zagaria   +5 more
wiley   +1 more source

INFLUENCE OF DIAMETER AND GEOMETRY IN THE TAPPING OF THE PILOT HOLE IN PEDICLE SCREWS

open access: yesColuna/Columna
Objective: To evaluate the insertion torque and the pulling force of each screw with different diameters and tap. Methods: Polyurethane blocks with a pilot hole of 2.7 mm were used in the study.
Helton Luiz Aparecido Defino   +3 more
doaj   +1 more source

Optimal Active Control of Structures Using a Screw Jack Device and Open-Loop Linear Quadratic Gaussian Controller

open access: yesFrontiers in Built Environment, 2019
A screw jack is a device which converts input torque into amplified axial force, capitalizing on the device's gearbox mechanism. Traditionally used in auto repair shops, the screw jack has been studied for the first time for active structural control ...
Ali Noormohamed   +2 more
doaj   +1 more source

Blending of Newtonian and Shear-Thinning Fluids in a Tank Stirred with a Helical Screw Agitator [PDF]

open access: yes, 2000
Newtonian and non-Newtonian laminar fluid flow has been simulated using Computational Fluid Dynamics for a cylindrical vessel stirred by a helical screw agitator.
Aubin, Joelle   +3 more
core   +1 more source

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