ASTM-C1377 › Historical Revision Information
Standard Test Method for Calibration of Surface/Stress Measuring Devices (Withdrawn 2014)
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Scope
1.1 This test method covers calibration or verification of calibration, or both, of surface-stress measuring devices used to measure stress in annealed and heat-strengthened or tempered glass using polariscopic or refractometry based principles.
1.2 This test method is nondestructive.
1.3 This test method uses transmitted light, and therefore, is applicable to light-transmitting glasses.
1.4 This test method is not applicable to chemically tempered glass.
1.5 Using the procedure described, surface stresses can be measured only on the “tin” side of float glass.
1.6 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.
Significance and Use
The strength and performance of heat-strengthened and fully tempered glass is greatly affected by the surface and edge stress induced during the heat-treating process.
The edge and surface stress levels are specified in Specification C 1048
Surface stresses can be measured nondestructively using methods, such as Test Method C 1279
Keywords
calibration; stress measurements; surface stress; tempered glass; Calibration; Calibration--load testing machines; Stress; Surface-stress measuring devices; ICS Number Code 17.180.30 (Optical measuring instruments); 81.020 (Processes in the glass and ceramics industries)
To find similar documents by ASTM Volume:
15.02 (Glass; Ceramic Whitewares)
To find similar documents by classification:
81.020 (Processes in the glass and ceramics industries)
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Document Number
ASTM-C1377-97(2009)
Revision Level
1997 R09 EDITION
Status
Superseded
Modification Type
Replaced
Publication Date
Sept. 1, 2009
Document Type
Test Method
Page Count
5 pages
Committee Number
C14.08