This standard specifies thewith exclusion of changes method to determineThein length due to accidentalreversible linearThermalfactors such as changesexpansion ofin moistureplasticscontent,degree of polymerization and stress release. Since it will not be possible to exclude allThese accidentalfactors,The method can be expected to give only approximate values.
EN 2155-12:1997 history
1997EN 2155-12:1997 Aerospace series - Test methods for transparent materials for aircraft glazing - Part 12: Determination of linear thermal expansion