ASTM C1279
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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About This Item
ASTM C1279 is the standard for non-destructive photoelastic measurement of edge and surface stresses in annealed, heat-strengthened, and fully tempered flat glass. It provides a technical framework for evaluating stress conditions without damaging the specimen, which is useful when glass quality, performance, or compliance must be checked efficiently. By focusing on measurable edge and surface stress, the standard supports more consistent testing and clearer interpretation of glass condition.
What is ASTM C1279?
ASTM C1279 is a test method that uses photoelastic principles to measure edge and surface stresses in flat glass by non-destructive means. The official title indicates its application to annealed, heat-strengthened, and fully tempered glass, making it relevant to controlled evaluation of processed flat glass products. As an ASTM standard, it helps define a repeatable technical approach for assessing stress conditions that may affect product performance, quality verification, or acceptance decisions in laboratory and production settings.
Where is ASTM C1279 used?
ASTM C1279 is commonly used in glass testing environments where flat glass must be evaluated without being cut, altered, or otherwise damaged. It is especially relevant in quality control, product verification, and technical assessment of annealed, heat-strengthened, and fully tempered flat glass. The method may also support specification review, incoming inspection, and troubleshooting when edge or surface stress conditions need to be measured with a non-destructive approach.
Why is ASTM C1279 important?
ASTM C1279 matters because it helps users measure stress conditions in flat glass in a way that preserves the test specimen. That can improve consistency in testing, support compliance with internal or external requirements, and reduce uncertainty during product evaluation. For manufacturers, laboratories, and specifiers, the standard offers a recognized method for comparing results, documenting quality, and helping reduce risk when stress-related glass performance is a concern.
- Non-destructive photoelastic measurement
- Edge and surface stress evaluation
- Flat glass testing and quality checks
- Applicable to processed glass types
- Supports repeatable technical assessment
- Publication Date: 2023-12-01
- Publisher: ASTM
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