OS GSO ISO 7884-4:2010
ISO 7884-4:1987
Omani Standard
Current Edition
·
Approved on
31 October 2010
Glass -- Viscosity and viscometric fixed points -- Part 4: Determination of viscosity by beam bending
OS GSO ISO 7884-4:2010 Files
English
12 Pages
Current Edition
Reference Language
OMR
30.98
OS GSO ISO 7884-4:2010 Scope
A method of determining the dynamic viscosity of glass on a rod-shaped test specimen, i.e. a beam, supported at its end is specified. The viscous deflection rate of the beam is measured under given load at the midpoint between the supports. In addition the viscosity-temperature relationship and the dependence of the viscosity on the thermal history of the sample can be determined. The theoretical basis relations and the apparatus including method of measurements are described.
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