Results 11 to 20 of about 733,717 (305)
Contaminant film thickness affects walkway friction measurements [PDF]
Frontiers in Public Health, 2022 Walkway tribometers are used to measure available friction for evaluating walkway safety and pedestrian slip risk. Numerous variables can affect tribometer measurements, including the type and distribution of contaminants on the surface.
Dennis D. Chimich +4 more
doaj +2 more sources
Nuclear Engineering and Technology, 2022 The porous corrosion deposits (known as CRUD) adhered to the cladding have an important effect on the heat transfer from fuel rods to coolant in PWRs. The vapor film is the main constituent in the two-phase film boiling model. This paper presents a vapor
Yuan Shen +9 more
doaj +1 more source
Quantification of oil film thickness on the top ring sliding surface by visualization
Nihon Kikai Gakkai ronbunshu, 2023 The oil film thickness of the piston ring at the sliding surface affects oil consumption, friction loss and wear of the ring and liner in internal combustion engines.
Akito WATANABE +5 more
doaj +1 more source
Research on Properties of X-Ray Detection Film Based on Thallium Doped Cesium Iodide [PDF]
E3S Web of Conferences, 2021 As X-ray detection imaging has a wide range of applications in medicine, industry, public safety, etc., it is of great significance to study its imaging mechanism and improve its imaging performance.
Yanbei Yang, Chunhui Tian, Shuang Liu
doaj +1 more source
A method for the measurement of hydrodynamic oil films using ultrasonic reflection [PDF]
, 2004 The measurement of the thickness of an oil film in a lubricated component is essential information for performance monitoring and control. In this work, a new method for oil film thickness measurement, based on the reflection of ultrasound, is evaluated ...
Drinkwater, B.W. +2 more
core +1 more source
The measurement of lubricant-film thickness using ultrasound [PDF]
, 2003 Ultrasound is reflected from a liquid layer between two solid bodies. This reflection depends on the ultrasonic frequency, the acoustic properties of the liquid and solid, and the layer thickness.
Astridge D. G. +6 more
core +1 more source
The phase shift of an ultrasonic pulse at an oil layer and determination of film thickness [PDF]
, 2005 An ultrasonic pulse incident on a lubricating oil film in a machine element will be partially reflected and partially transmitted. The proportion of the wave amplitude reflected, termed the reflection coefficient, depends on the film thickness and the ...
Astridge D. G. +4 more
core +1 more source
PFPE Lubricant Molecular Weight Effects on Slider-Disk Interactions
Tribology Online, 2014 Slider wear is investigated as a function of D-4OH lubricant film thickness and molecular weight. Slider wear increases with decreasing lubricant film thickness and with increasing molecular weight when compared at the same film thickness in the ...
Robert Waltman +4 more
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Nihon Kikai Gakkai ronbunshu, 2023 In order to obtain the fundamental information for the measurement of thin oil film thickness adhered on lubrication surface using ultrasonic method, the ultrasonic calculation considering the scattering attenuation at each interface and the influence of
Akitoshi TAKEUCHI
doaj +1 more source
Slow dynamics near glass transitions in thin polymer films [PDF]
, 2001 The $\alpha$-process (segmental motion) of thin polystyrene films supported on glass substrate has been investigated in a wider frequency range from 10$^{-3}$ Hz to 10$^4$ Hz using dielectric relaxation spectroscopy and thermal expansion spectroscopy ...
A. Hensel +38 more
core +3 more sources