Results 151 to 160 of about 77,448 (312)

Fatigue life of high-speed ball bearings with silicon nitride balls [PDF]

open access: yes
Hot-pressed silicon nitride was evaluated as a rolling-element bearing material. The five-ball fatigue tester was used to test 12.7-mm- diameter silicon nitride balls at maximum Hertz stresses ranging from 4.27 x 10 to the 9th power n/sq m to 6.21 x 10 ...
Parker, R. J., Zaretsky, E. V.
core   +1 more source

Advancing Severe Plastic Deformation for Tubular Samples: Systematic Review and Machine Learning Optimization

open access: yesMetalMat, EarlyView.
This review highlights recent advancements in Severe Plastic Deformation (SPD) techniques tailored for tubular samples. The mechanisms of processing are critically discussed with emphasis on microstructural control and the governing process parameters that enable refinement to ultrafine‐ and nano‐grained structures. Comparative insights into equivalent
Eman M. Zayed   +5 more
wiley   +1 more source

Ferrographic analysis of wear debris generated in accelerated rolling element fatigue tests [PDF]

open access: yes
The types and quantities of wear particles generated during accelerated ball rolling contact fatigue tests were determined. Ball specimens were made of AMS 5749, a corrosion resistant, high-temperature bearing steel.
Jones, W. R., Jr., Parker, R. J.
core   +1 more source

Impact of wheel shape on the vertical damage of cast crossing panels in turnouts [PDF]

open access: yes, 2015
Impact forces generated in the load transfer area of railway crossing panels lead to a range of degradation modes from wear and fatigue of the contacting materials, fatigue of supporting components to ballast/subgrade deterioration.
Bezin, Yann   +3 more
core  

“It's just us”: Families' experiences with temporary tube feeding

open access: yesNutrition in Clinical Practice, EarlyView.
Abstract Background Children with temporary feeding tubes are discharged home with increasing frequency, yet little is known about how families adapt and manage in their home environment. Whereas the physical side effects of temporary feeding tubes are well documented, the psychosocial impact on families remains underresearched. Understanding families'
Claire Reilly   +4 more
wiley   +1 more source

Rolling contact fatigue of ceramics

open access: yes, 1993
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University. Ceramic/ceramic and ceramic/steel contacts under lubricated rolling conditions are studied. This work is of interest to ball bearing manufacturers as the use of ceramics in the design of these components has some advantages over traditional bearing-steel ...
openaire   +1 more source

If you leave it, you lose it: Managing human–wildlife feeding interactions requires constant attention, interdisciplinary approaches and long‐term monitoring

open access: yesPeople and Nature, EarlyView.
Abstract Human–wildlife interactions are becoming more common as we progress through the Anthropocene. People tend to feed wildlife more regularly as it is often popularised by social media and can counteract their disconnect from the natural world. These interactions impact wildlife behaviour, feeding ecology and zoonotic transmission dynamics. Due to
Jane Faull   +9 more
wiley   +1 more source

Stress concentration in the vicinity of a hole defect under conditions of Hertzian contact [PDF]

open access: yes
Two dimensional photoelastic stress analyses were conducted for epoxy resin models containing a hole defect under the conditions of Hertzian contact. Stress concentrations around the defect were determined as a function of several parameters.
Eguchi, M., Murayama, K., Yamamoto, T.
core   +1 more source

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