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

Abstract

The invention discloses a method and a device for detecting the impurities and defects of a tempered glass curtain wall, which relate to the field of material detection. The method comprises the following steps: through a transmissive photo-elastic principle, forming a light intensity difference without energy consumption by utilizing natural light and a camera bellows analyzer so as to acquire astress fringe pattern of the glass of the curtain wall; performing image processing and analyzing on stress fringes to find out singularities or catastrophe points including stress concentration points in the stress fringes; and further performing amplification and analysis on the areas to determine the types, sizes and positions of the impurities or the defects. The device comprises a transmissive photo-elastic instrument system used for scanning and acquiring an image, an image transmission system and a stress analysis system, and is used for detecting the types, positions and sizes of the impurities and the defects of the glass curtain wall. The method and the device solve the problem of detecting the impurities and defects of the serving tempered glass curtain wall, and are significantfor ensuring the safety and reliability of the glass curtain wall; and an invented test device has a vast application prospect.

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.

Images