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ASTM F218-12

Historical Revision

Standard Test Method for Measuring Optical Retardation and Analyzing Stress in Glass

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1.1 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). 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.

1.2 There is no known ISO equivalent to this standard.

1.3 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.

The performance of glass products may be affected by presence of residual stresses due to process, differential thermal expansion between fused components, and by inclusions. This test method provides means of quantitative evaluation of stresses.

SDO ASTM: ASTM International
Document Number F218
Publication Date March 1, 2012
Language en - English
Page Count 7
Revision Level 12
Supercedes
Committee C14.04
Publish Date Document Id Type View
Oct. 1, 2013 F0218-13 Revision
March 1, 2012 F0218-12 Revision
Sept. 15, 2005 F0218-05 Revision
Jan. 1, 2000 F0218-95 Revision
Aug. 1, 2020 F0218-13R20 Reaffirmation
Jan. 1, 2000 F0218-95R00 Reaffirmation