ASTM F 218 Standard Test Method for Measuring Optical Retardation and Analyzing Stress in Glass
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ASTM F 218 Document Information:
Title
Standard Test Method for Measuring Optical Retardation and Analyzing Stress in Glass
ASTM International
Publication Date:
Sep 15, 2005
Scope:
This test method covers the analysis of stress in glass by means of a
polarimeter based on the
principles developed by Jessop and Friedel (1, 2).(Footnote 2) Stress
is evaluated as a function of
optical retardation, that is expressed as the angle of rotation of an
analyzing polarizer that
causes extinction in the glass.
There is no known ISO equivalent to this standard.
This standard does not purport to address all of the safety concerns,
if any, associated with its
use. It is the responsibility of the user of this standard to
establish appropriate safety and
health practices and determine the applicability of regulatory
limitations prior to use.
Footnote 2 - The boldface numbers in parentheses refer to the reports
and papers appearing in the
list of references at the end of this test method.
Keywords:
- glass
- optical retardation
- polarimeter
- stress
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