By Viktorov, Vladimir; Belforte, Guido; Trivella, Andrea; Raparelli, Terenziano

ISBN-10: 9533072067

ISBN-13: 9789533072067

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Extra info for Identification of discharge coefficients of orifice-type restrictors for aerostatic bearings and application examples

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Refractive index of the lubricant samples To consider the frequency-dispersion refractive indices of the lubricants, the following equation [7] is used for the refractive indices calculation of the lubricants. ns = ε m (λ )np (λ )2 sin 2 θ ε m ( λ ) − np (λ )2 sin 2 θ (1) where ns = refractive index of lubricant, np(λ) = refractive index of glass prism as a function of wavelength, εm(λ) = relative permittivity of metal film as a function of wavelength and θ = angle of incidence. In the experiment, silver thin film is used as the sensing layer and the glass material of the dove prism is PBH72 O’Hara glass.

Jang, Experimental study on the shear thinning effects of viscosity index improver added lubricant by in-situ optical viscometer, Korea Australia Rheology Journal 15 (3), pp. 117-124, (2003). [23] F. L. Wong, Experimental observation of a dimple-wedge elastohydrodynamic lubricating film, Tribology International 37 (2), pp. 119-127, (2004). [24] P. Yang, J. Cui, M. Kaneta, H. Nishikawa, Influence of a surface bump or groove on the lubricating performance and dimple phenomena in simple sliding point EHL contacts, Journal of Tribology 126 (3), pp.

Fig. 11, shows that the residual stresses in the multi-layers are lower than those of constituent mono-layers. This reduction of the residual stresses is mainly du to the interfaces created between the various superposed layers. 4 times higher if one compares PVD1 (all the mono-layers are with Pt) with PVD6 (all the mono-layers are with Pc). The value of the highest constraints is obtained in multi-layer PVD6. 5 times. 7GPa). 7GPa). Study of CrAlN Multilayred Thin Films 15 These results mean that the underlayer, Cr or CrN improves the constraints intensity of these multi-layer that if they are at their point PT as the surface layer.

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Identification of discharge coefficients of orifice-type restrictors for aerostatic bearings and application examples by Viktorov, Vladimir; Belforte, Guido; Trivella, Andrea; Raparelli, Terenziano


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