Tempered glass strength detecting device

Abstract

The invention discloses a tempered glass strength detecting device. The tempered glass strength detecting device comprises a machine frame and a detection component, a spring, an air cylinder, a deformation component, and liquid drainage pipes; the detecting component is arranged on the machine frame and comprises an upper fixing plate; each of the two ends of the lower part of the upper fixing plate is slidingly connected with a subordinate guide rod, the middle part of the upper fixing plate is fixedly connected with a principal guide rod, and the lower part of the principal guide rod is provided with a pressure rod; the principal guide rod and the pressure rod are sleeved with the spring; the air cylinder comprises a piston and a piston rod; the lower end of the piston rod is connected with the principal guide rod; a hydraulic cylinder is arranged between the principal guide rod and each subordinate guide rod; each hydraulic cylinder comprises an upper cylinder, a lower cylinder, a push plate, and a first connecting rod; one end of each first connecting rod is connected with the corresponding push plate; a second connecting rod is connected with the upper part of each push plate; the second connecting rods are fixedly connected with the upper fixing plate; a hydraulic air bag is arranged below a test block; and the hydraulic air bag is connected with the two lower cylinders via the two liquid drainage piles respectively.

Description

technical field

[0001] The invention belongs to the technical field of testing materials. Background technique

[0002] Glass is a typical brittle material with a tensile strength much lower than its compressive strength. When there are cracks or defects on the surface or inside of glass, stress concentration and crack propagation are easily generated, resulting in catastrophic damage. The strength of ordinary glass is relatively low, generally only tens of megapascals, and the edges of the fragments have relatively large edges and corners during the breaking process, which is likely to cause personal injury. In order to improve the strength and safety reliability of glass, chemical or physical toughening methods are usually used to form compressive stress on the surface of glass. When the glass is subjected to external force, the compressive stress of the surface layer is firstly offset, thereby greatly improving the bearing capacity of the glass and overcoming the weakne...

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