The stress in glass directly affects its strength. Thermal shock in glass is caused by excessive thermal stress; impact breakage is due to excessive mechanical stress from mechanical impact or collisions; spontaneous breakage occurs due to excessive internal stress in the glass. Additionally, the increased strength of glass through thermal or chemical tempering is due to the increase in surface compressive stress. Therefore, stress and strength in glass have an inseparable relationship.
The glass surface stress meter primarily measures the stress distribution on the glass surface under external stress, helping to detect potential cracks, defects, or uneven stress distribution, which could impact the glass's strength, durability, and safety.
Tempered glass generates significant internal stress during heating and cooling, affecting its strength and safety. A glass surface stress meter can be used to measure surface stress in tempered glass to ensure it meets design requirements.
For the glass used in touchscreens of various phones, tablets, and other electronic products, using a glass surface stress meter to test surface stress can help assess its impact resistance and scratch resistance.
Moreover, due to glass surface stress meter can effectively detect potential defects or stress concentration areas during the production and quality control of glass without damaging the material itself, they are a form of non-destructive testing.
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