ISO 7884-4:1987
Current
The latest, up-to-date edition.
Glass — Viscosity and viscometric fixed points — Part 4: Determination of viscosity by beam bending
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English
26-11-1987
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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.
| Committee |
ISO/TC 48/SC 7
|
| DevelopmentNote |
Also numbered as BS 7034-4(1988) (09/2005)
|
| DocumentType |
Standard
|
| Pages |
12
|
| PublisherName |
International Organization for Standardization
|
| Status |
Current
|
| Standards | Relationship |
| DIN ISO 7884-4:1998-02 | Identical |
| BS ISO 9802:1996 | Raw optical glass. Vocabulary |
| ISO 3585:1998 | Borosilicate glass 3.3 — Properties |
| BS ISO 3585:1998 | Borosilicate glass 3.3. Properties |
| ISO 9802:1996 | Raw optical glass Vocabulary |
| BS ISO 12775:1997 | Guidelines on types of glass of normal bulk-production composition and their test methods |
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