By Michael Danyluk, Anoop Dhingra
ISBN-10: 331911929X
ISBN-13: 9783319119298
ISBN-10: 3319119303
ISBN-13: 9783319119304
This publication bargains with put on and function checking out of skinny reliable movie lubrication and difficult coatings in an ultra-high vacuum (UHV), a approach which permits quick accumulation of rigidity cycles in comparison with checking out in oil at atmospheric strain. The authors’ lucid and authoritative narrative broadens readers' knowing of the advantages of UHV checking out: a purifier, shorter attempt is completed in excessive vacuum, disturbance rejection by way of the deposition controller should be optimized for optimum fatigue lifetime of the coating utilizing rolling touch fatigue checking out (RCF) in a excessive vacuum, and RCF trying out in UHV stipulations permits a quicker research of deposition regulate parameters. briefly, Rolling touch Fatigue in a Vacuum is an essential source for researchers and engineers fascinated with skinny movie deposition, sun flat panel production, actual vapor deposition, MEMS production (for lubrication of MEMS), tribology in various industries, and automobile and marine put on coatings for engines and transmissions.
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Additional info for Rolling Contact Fatigue in a Vacuum: Test Equipment and Coating Analysis
Example text
The attachments need to support the weight of instruments as well as maintain vacuum integrity for the life of the test: 2wL3 2 À adif 0 6EI 3 wL3 d 3 À t3 À σ y 0: g8 ¼ I3 2 g7 ¼ ð2:10Þ ð2:11Þ Constraints g10, g11, and g12 relate to hoop stress and radial wall deflection in the half nipple attachment tubes. For some test applications, the wall thickness of an attachment tube may need to be minimized to allow optimal passing of magnetic 28 2 Vacuum Chamber Design fields through the wall. For example, if electron-beam heating through one of the half nipple attachments is needed, then external magnets are used to guide the electrons through nipple.
2 Analysis of Rolling Contact in Vacuum Solid lubricants find unique application in systems where the pressure range is 10À3–10À8 Torr, and temperature may range between À100 and 500 C. As far back as 1972, NASA Report SP-5059, SP-5059(01) (1972) outlined testing platforms for high-vacuum and high temperature testing involving sliding contact specimens, rolling contact ball bearings, metal disk and riders, and sliding contact of a sleeve on a cylindrical rod. Lubricant film survival is highly dependent on adhesion and substrate subsurface bonding.
As far back as 1972, NASA Report SP-5059, SP-5059(01) (1972) outlined testing platforms for high-vacuum and high temperature testing involving sliding contact specimens, rolling contact ball bearings, metal disk and riders, and sliding contact of a sleeve on a cylindrical rod. Lubricant film survival is highly dependent on adhesion and substrate subsurface bonding. 1 Calculations of Contact Stress A calculation of contact stresses in rolling elements was first established by Hertz in 1882. 5 times greater than the applied pressure of the contacts if both surfaces were flat.
Rolling Contact Fatigue in a Vacuum: Test Equipment and Coating Analysis by Michael Danyluk, Anoop Dhingra
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