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RISAnalysis of Ultra-Thin Gas Film Lubrication Based on Linearized Boltzmann Equation: First Report—Derivation of a Generalized Lubrication Equation Including Thermal Creep Flow
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A generalized Reynolds-type lubrication equation valid for arbitrary Knudsen numbers, defined as the ratio of the molecular mean free path to the film thickness, is derived from a linearized ...
Experimental Investigation of Externally Pressurized Bearings Under High Knudsen Number Conditions
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The characteristics of the externally pressurized bearings under high Knudsen number conditions were investigated experimentally by the use of surface restriction bearings in a medium vacuum on ...
A Database for Interpolation of Poiseuille Flow Rates for High Knudsen Number Lubrication Problems
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper proposes the use of a Poiseuille flow rate database for rapid calculation of a generalized lubrication equation for high Knudsen number gas films. The database is created by numerical ...
Nanoindentation Hardness Tests Using a Point Contact Microscope
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The Point Contact Microscope (PCM), developed in NTT’s Kaneko Research Laboratory, is used to conduct hardness tests on polycarbonate and gold at indentation depths in the range of about 5-100 ...
On the Physical Meanings of Λ/Q̃p0 and σ/Q̃p0 in Molecular Gas Film Lubrication Problems
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: To estimate molecular gas film lubrication (MGL) characteristics, we propose a modified bearing number Λ′ and a modified squeeze number σ′, which are, respectively, the conventional bearing Λ ...
Interaction Force Between Thin Film Disk Media and Elastic Solids Investigated by Atomic Force Microscope
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Atomic force microscopy is used to investigate the interaction force between the sharp tips of various elastic solids and four different samples. The samples are: thin film disk media coated ...
Dynamic Characteristics of Gas-Lubricated Slider Bearings Under High Knudsen Number Conditions
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents numerical analyses of the dynamic characteristics of gas-lubricated slider bearings under high Knudsen number conditions using a generalized lubrication equation based on the ...
Micro-Tribological Studies on Fluorinated Carbon Films
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Micro-tribology is a key technology in micro-mechanics and the magnetic recording head-media interface. The atomic-scale surface state is very important in micro-tribology. However, the concepts ...
Design of Negative Pressure Slider for Magnetic Recording Disks
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper reports on investigations of static and dynamic characteristics of a negative pressure slider for magnetic recording disks. The negative pressure slider is composed of two narrow ...
Wear Resistance of N+-Implanted Silicon Investigated by Scanning Probe Microscopy
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A scanning probe microscope with a 80 nm radius diamond tip was used to investigate the wear resistance of single-crystal silicon and N+ -implanted silicon. The N+ implantation conditions were ...