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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.

Keywords

calibration; stress measurements; surface stress; tempered glass

To find similar documents by ASTM Volume:

15.02 (Glass; Ceramic Whitewares)

To find similar documents by classification:

17.180.30 (Optical measuring instruments Including spectroscopes, geodetic instruments, etc. Ophthalmic optics and instruments, see 11.040.70 Laser equipment, see 31.260 Fibre optics, see 33.180 Optical equipment, materials and components, see 37.020 Photographic equipment lenses, see 37.040.10)

81.020 (Processes in the glass and ceramics industries)

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