METHOD OF FRICTION COEFFICIENT MEASURING BETWEEN PARTICULAR SUBSTANCE OR VISCOUS LIQUID AND WALL AND DEVICE FOR THIS METHOD REALIZATION

The measuring method of the friction coefficient between the particular substance or viscous liquid and the wall deals with the fact that the real normal pressure and tangential stress are scanned synchronously and independently of each other on the wall of the measuring tube, through which the part...

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Bibliographische Detailangaben
Hauptverfasser:	HANYKYR VLADIMIR DOC. DRSC.,CS, KUNES KAREL DOC. CSC.,CS, SABATA STANISLAV ,CS, SMID JIRI CSC.,CS
Format:	Patent
Sprache:	eng
Schlagworte:	INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING PHYSICS TESTING
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Beschreibung
Zusammenfassung:	The measuring method of the friction coefficient between the particular substance or viscous liquid and the wall deals with the fact that the real normal pressure and tangential stress are scanned synchronously and independently of each other on the wall of the measuring tube, through which the particular substance or viscous liquid is pushed. The method is carried out in the device that consists of the pressure source and measuring tubes, which are equipped on the outer wall with electric resistance sensors in the full bridge connection for measurement of the normal pressure of the pushed-through medium independently of the tangential stress. The measuring tube is flexibly separated from the outlet pipe of the pressure source by sealing and connected by means of two or more bending-stressed dynamometric elements in the shape of a part of the ring with electric resistance strain gauges in the full bridge connection for scanning of tangential stresses of the pushed-through medium on the inner surface of the measuring tube.