ASTM C 1279 Standard Test Method for Non-Destructive Photoelastic Measurement of Edge and Surface Stresses in Annealed, Heat-Strengthened, and Fully Tempered Flat Glass
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ASTM C 1279 Document Information:
Title
Standard Test Method for Non-Destructive Photoelastic Measurement of Edge and Surface Stresses in Annealed, Heat-Strengthened, and Fully Tempered Flat Glass
ASTM International
Publication Date:
Apr 1, 2005
Scope:
This test method covers the determination of edge stresses and surface
stresses in annealed,
heat-strengthened, and fully tempered flat glass products.
This test method is non-destructive.
This test method uses transmitted light and is, therefore, applicable
to light-transmitting
glasses.
The test method is not applicable to chemically-tempered glass.
Using the procedure described, surface stresses can be measured only
on the "tin" side of float
glass.
Surface-stress measuring instruments are designed for a specific range
of surface index of
refraction.
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:
- annealed glass
- heat-strengthened glass
- polariscopic examination
- stress measurement
- tempered glass
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