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tungsten/fatiga muscular
L'enllaç es desa al porta-retalls
Pàgina 1 des de 40 resultats
Characterization of micro-contact resistance between a gold nanocrystalline line and a tungsten electrode probe in interconnect fatigue testing.
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An electromechanically-coupled micro-contact resistance measurement system is built to mimic the contact process during fatigue testing of nanoscale-thickness interconnects using multiple probe methods. The design combines an optical microscope, high-resolution electronic balance, and
Fatigue Resistant Bioinspired Composite from Synergistic Two-Dimensional Nanocomponents.
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Portable and wearable electronics require much more flexible graphene-based electrode with high fatigue life, which could repeatedly bend, fold, or stretch without sacrificing its mechanical properties and electrical conductivity. Herein, a kind of ultrahigh fatigue resistant graphene-based
Contact fatigue response of porcelain-veneered alumina model systems.
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Fatigue damage modes and reliability of hand-veneered (HV) and over-pressed (OP) aluminum-oxide layer structures were compared. Influence of luting cement thickness on mechanical performance was investigated. Sixty-four aluminum-oxide plates (10 × 10 × 0.5 mm) were veneered with hand built-up or
Influence of Adhesive Strength, Fatigue Strength and Contact Mechanics on the Drilling Performance of Diamond Coating.
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Adhesive strength of the coating significantly affects the lifetime of the coating. However, it is still inevitable for the coating, even with strong adhesive strength, to peel off from the substrate after working for a while. In this work, fatigue and wear behaviors were employed to analyze the
Effect of core thickness differences on post-fatigue indentation fracture resistance of veneered zirconia crowns.
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OBJECTIVE
Despite the excellent esthetics of veneered zirconia crowns, the incidence of chipping and fracture of veneer porcelain on zirconia crowns has been recognized to be higher than in metal ceramic crowns. The objective of this investigation was to study the effect of selected variations in
Recrystallization and grain growth induced by ELMs-like transient heat loads in deformed tungsten samples.
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Tungsten has been chosen as the main candidate for plasma facing components (PFCs) due to its superior properties under extreme operating conditions in future nuclear fusion reactors such as ITER. One of the serious issues for PFCs is the high heat load during transient events such as ELMs and
Study on fracture of tungsten wire induced by acoustic cavitation at different hydrostatic pressures and driving electric powers
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The near-solid wall multi-bubble cavitation is an extremely complex phenomenon, and cavitation has strong erosiveness. The melting point (about 3410 °C) of tungsten is highest among all pure metals, and its hardness is also very high (its yield strength is greater than 1 GPa). What would happen to
Measurement of Fracture Toughness of Pure Tungsten Using a Small-Sized Compact Tension Specimen.
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The evaluation of fracture toughness of pure tungsten is essential for the structural integrity analysis in a fusion reactor. Therefore, the accurate quantification of fracture toughness of tungsten alloys is needed. However, due to the inherent brittleness of tungsten, it is difficult to introduce
Surface Fatigue Behaviour of a WC/aC:H Thin-film and the Tribochemical Impact of Zinc Dialkyldithiophosphate.
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In wind turbine gearboxes, (near-)surface initiated fatigue is attributed to be the primary failure mechanism. In this work, the surface fatigue of a hydrogenated tungsten carbide/amorphous carbon (WC/aC:H) thin-film was tested under severe cyclic tribo-contact using PolyAlphaOlefin (PAO) and PAO +
Phase Exchange Driven Wake-Up and Fatigue in Ferroelectric Hafnium Zirconium Oxide Films.
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Ferroelectric hafnium zirconium oxide holds great promise for a broad spectrum of CMOS compatible and scaled microelectronic applications, including memory, low voltage transistors, and infrared sensors, among others. An outstanding challenge hindering implementation of this material is polarization
Intramuscular stimulation of tibialis anterior in human subjects: the effects of discharge variability on force production and fatigue.
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Continuous intramuscular stimulation of tibialis anterior (TA) was used to test the hypothesis that irregular trains of stimuli can increase force production and offset the magnitude of fatigue when compared with a continuous train of regular stimuli at an identical mean frequency (19 or 24 Hz). To
Influence of Antagonist Material on Fatigue and Fracture Resistance of Zirconia Crowns.
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Fatigue measurement system designed for a chalcogenide-based device using a homemade heater tip.
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A fatigue measurement system is designed using a homemade tungsten (W) heater tip. This system is composed of a pulse generator and an atomic force microscope with the W heater tip attached. Also included are a parameter analyzer and control devices. The entire measurement process is controlled by a
[A comparative study on cyclic and static fatigue of dental ceramic by means of Hertzian's contact].
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OBJECTIVE
To compare the difference in strength degradation and morphology damage of brittle dental ceramic after static load and cyclic fatigue.
METHODS
Hertzian's contact technique with a tungsten carbide sphere was used to investigate the response of feldspathic dental porcelain to static load
Caffeine increases time to fatigue by maintaining force and not by altering firing rates during submaximal isometric contractions.
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Caffeine increases time to fatigue [limit of endurance (T(lim))] during submaximal isometric contractions without altering whole muscle activation or neuromuscular junction transmission. We used 10 male volunteers in a randomized, double-blind, repeated-measures experiment to examine single motor
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