BS EN 2155-14:1993 Test methods for transparent materials for aircraft glazing - Part 14. Determination of the 1/10 Vicat softening temperature
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This standard specifies the method used for the determination of the 1/10 VICAT softening temperature of transparent thermoplastic materials used for aircraft glazing.
Principle
Determination of the temperature at which a standard indenter under a load of 9,81 N penetrates 0.1 mm
into the surface of a test specimen; this temperature is attained during a defined uniform rate of increase of temperature. The temperature corresponding to the 0,1 mm penetration is called 1/10 VICAT softening temperature; it is expressed in °C.