ISO-7884-4 › Glass - Viscosity and viscometric fixed points - Part 4 : Determination of viscosity by beam bending
ISO-7884-4
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1ST EDITION
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CURRENT
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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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Document Number
ISO 7884-4:1987
Revision Level
1ST EDITION
Status
Current
Publication Date
Dec. 15, 1987
Committee Number
ISO TC 48/SC 5