Results 131 to 140 of about 77,448 (312)
Mechanisms of rolling contact spalling [PDF]
The results of a study aimed at analyzing the mechanical material interactions responsible for rolling contact spalling of the 440 C steel, high pressure oxygen turbopump bearings are presented.
Bhargava, V. +4 more
core +1 more source
Journal of Consumer Behaviour, Volume 24, Issue 2, Page 632-654, March 2025.ABSTRACT Existing research examines the relationship between personal life shocks and financial well‐being primarily through the lens of objective markers of the individual's financial situation (e.g., liquidity). Little attention has been paid to the relative roles of these objective markers and more intuitive or affect‐based factors in how an ...
Jordan Bell +2 more
wiley +1 more source
Journal of Materials Research and TechnologyA gradient nanostructured surface layer of ∼600 μm in thickness was prepared on M50 steel with rare earth additions by a surface mechanical rolling treatment.
B. Gao +4 more
doaj +1 more source
The influence of heterogenous porosity on silicon nitride/steel wear in lubricated rolling contact [PDF]
, 2000 Heterogeneous porosity is detected on the surface and subsurface of hot isostatically pressed (HIPed) silicon nitride spherical rolling elements. The extent of the localised porosity accounts for an area of 6% of the rolling element surface and 4% of the
Hadfield, M, Kang, J
core
Advances in Triboelectric Nanogenerators With Rotating Structure
Carbon Energy, EarlyView.The rotating TENG has been widely studied for its superiorities of simple structure, high efficiency, and stable output. This review introduced the four different principles of rotating TENG and offered a thorough summary for performance and application research through three‐level classification. Importantly, the current existing problems, challenges,
Chuguo Zhang +4 more
wiley +1 more source
Rolling contact fatigue life of chromium ion plated 440C bearing steel [PDF]
Rolling contact fatigue (RCF) test specimens of heat treated 440C bearing steel were chromium ion plated in thicknesses from 0.1 to 8.0 micron and tested in RCF tester using 700 ksi maximum Hertzian stress.
Bhat, B. N., Davis, J. H.
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Sizing criterial for traction drives [PDF]
, 1983 A simplified traction drive fatigue analysis which was derived from the Lundberg-Palmgren theory is measured and the effects of rotational speed, multiplicity of contacts, and variation in the available traction coefficient on traction drive system life,
Coy, J. J. +2 more
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Two‐Dimensional Piezoelectric Nanomaterials for Nanoelectronics and Energy Harvesting
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.Two‐Dimensional Piezoelectric Nanomaterials from properties to applications. Smart materials, especially piezoelectric materials, have gained popularity over the last two decades. Two‐dimensional (2D) piezoelectric materials exhibit attributes including great flexibility, ease of workability, extensive surface area, and many active sites, indicating ...
Yujun Cao +12 more
wiley +1 more source
Bearing, gearing, and lubrication technology [PDF]
Results of selected NASA research programs on rolling-element and fluid-film bearings, gears, and elastohydrodynamic lubrication are reported. Advances in rolling-element bearing material technology, which have resulted in a significant improvement in ...
Anderson, W. J.
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ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.In this work, a polyurethane‐based fluorinated SICEs with excellent mechanical properties (7.35 MPa and 61.4 MJ m−3), conductivity (4.2 × 10−4 S cm−1), and harsh environmental resistance were prepared by a “three birds with one stone” strategy that combines multiple interactions with fluorine effects. The paper‐folding TENG is capable of harvesting not
Zequan Li +9 more
wiley +1 more source