Direct Measurement of Supersonic Skin Friction

The Measurement of Skin Supersonic Flow by means of Film Gauges Friction in Heated q'hin

The application of heated thin film gauges to the measurement of mean skin friction in compressible flow is described. It is shown that the calibration of the gauges is independent of Mach number, at least up to M = 3, provided the fluid properties are calculated at the appropriate film temperature. The gauges are calibrated by reference ~ surface tubes and also by comparison with the theoretic...

Direct measurement of friction of a fluctuating contact line.

We report a direct measurement of the friction coefficient of a fluctuating (and slipping) contact line using a thin vertical glass fiber of diameter d with one end glued onto a cantilever beam and the other end touching a liquid-air interface. By measuring the broadening of the resonant peak of the cantilever system with varying liquid viscosity η, we find the friction coefficient of the conta...

A New Advance in Direct Measurement of Moisture in Skin

In this review the potential application of near-infrared spectroscopy for the in vitro and in vivo characterization of skin is presented. The near-infrared attenuated reflectance spectroscopy allows the determination of the overall skin water content as well as of the various components constituting the skin, i.e., stratum corneum, epidermis and dermis. This technique provides the possibility ...

The Accuracy of Measurement of Turbulent Skin Friction by Means of Surface Pitot-Tubes and the Distribution of Skin Friction on a Flat Plate

Friction & Roughness Measurement of Elastomer