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Tablet ejection: A systematic comparison between force, static friction, and kinetic friction

International Journal of Pharmaceutics
The magnitude of the frictional forces during the ejection of porous pharmaceutical tablets plays an important role in determining the occurrence of tabletting defects.
Dingeman L H Van Der Haven, James A Elliott   +1 more
exaly   +3 more sources

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Influence of Contact Aging on Nanoparticle Friction Kinetics

Physical Review Letters, 2014
One of the oldest concepts in tribology is stick-slip dynamics, where a disruptive sequence of stick and slip phases determine the overall resistance in sliding friction. While the mechanical energy dissipates in the sudden slip phase, the stick phase has been shown to be characterized by contact strengthening mechanisms, also termed contact aging.
Feldmann, M., Dietzel, D., fuchs, H., Schirmeisen, A.   +3 more
openaire   +3 more sources

Kinetic excitation of solids: The concept of electronic friction

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2006
Abstract The energy dissipation into electron–hole pairs has been simulated ab initio within time-dependent density-functional theory for hydrogen atoms with a low kinetic energy in the range below 10 eV impinging on an Al(1 1 1) surface. The H-atoms penetrate into the crystal via the fcc-hollow site and are backscattered by the third atomic layer ...
Lindenblatt, M., Pehlke, E., Duvenbeck, Andreas, Rethfeld, B., Wucher, Andreas   +4 more
openaire   +1 more source

Frictional Insertion Kinetics of Bone Biopsy Needles

Journal of Biomechanical Engineering, 2001
Patients undergoing a percutaneous bone biopsy often complain of pain during needle insertion, despite local anesthesia. Bone biopsy needles are typically inserted with combined axial and twisting motions. These motions could cause pain through frictional heating or direct mechanical irritation. The hypothesis of this study is that the insertion energy
A D, Heiner, T D, Brown, V, Rossin, J A, Buckwalter   +3 more
openaire   +2 more sources

Dynamics of Transition from Static to Kinetic Friction

Physical Review Letters, 2009
We propose a model for a description of dynamics of cracklike processes that occur at the interface between two blocks prior to the onset of frictional motion. We find that the onset of sliding is preceded by well-defined detachment fronts initiated at the slider trailing edge and extended across the slider over limited lengths smaller than the overall
O M, Braun, I, Barel, M, Urbakh
openaire   +2 more sources

The determination of the coefficient of kinetic friction

Proceedings of the Physical Society, 1943
Movement is caused by applying a succession of uniformly increased forces. The accelerations produced are in turn plotted, by means of the Vector Trolley Apparatus, against a constant acceleration at right angles, and by direct reading the resisting force is measured. The surfaces in contact remain constant.
openaire   +1 more source

Friction in macroscopic thermodynamics: A kinetic point of view

Annals of Physics, 2015
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Kinetic friction

American Journal of Orthodontics and Dentofacial Orthopedics, 2004
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kinetic friction

2021
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