Method and device for detecting impurities and defects of tempered glass curtain wall

Abstract

The invention relates to a method and a device for detecting impurities and defects in tempered glass curtain walls, and relates to the field of material detection. This method adopts the principle of transmission photoelasticity, uses natural light and the design of the dark box analyzer to form a light intensity difference without energy consumption, obtains the stress stripe image of the curtain wall glass, and then performs image processing and analysis on the stress stripe to find out the stress stripe in the stress stripe. Singular or abrupt points, including stress concentration points, are further enlarged and analyzed to determine the type, size and location of impurities or defects. The device includes—a transmission photoelasticity system for scanning and collecting images,—an image transmission system, and—a stress analysis system, through which the type, position and size of impurities and defects of the glass curtain wall are detected. The invention solves the problem of detecting impurities and defects in the tempered glass curtain wall in service, and is of great significance for ensuring the safety and reliability of the glass curtain wall. The invented testing device has wide application prospects.

Description

technical field [0001] The invention relates to the field of material detection, in particular to an energy-free detection method for impurities and defects in tempered glass curtain walls. Specifically, the stress state of the tempered glass is obtained by observing the difference in the transmitted light intensity difference between the polarizer and the analyzer, and the area where the stress spot occurs suddenly is judged, so as to determine the surface or internal impurities and defects of the tempered glass curtain wall. A detection method of type, size and location. Background technique [0002] In many modern buildings, the majority of the exterior surface is composed of glass, forming a glass curtain wall. Since the 1980s, a large number of glass curtain wall buildings have been built in major cities in my country. A large glass curtain wall building generally has thousands to tens of thousands of pieces of glass. In most cases, because the strength of tempered g...

AI Technical Summary

Problems solved by technology

This technique generally requires an additional light source, and the glass samples that can be detected are relatively small. The crossed polarizer cannot be moved but needs to move the glass sample. It is generally suitable for the detection of glass when it leaves the factory, and is not suitable for online detection of large glass curtain walls.

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