In situ inspection of inclusions in toughened glass panels of high-rise buildings

Xiang Li; Zhong Ping Fang; Ivan Reading; Liping Zhao; Siew Loong Chow

doi:10.1117/12.621451

12 April 2005 In situ inspection of inclusions in toughened glass panels of high-rise buildings

Xiang Li, Zhong Ping Fang, Ivan Reading, Liping Zhao, Siew Loong Chow

Proceedings Volume 5852, Third International Conference on Experimental Mechanics and Third Conference of the Asian Committee on Experimental Mechanics; (2005) https://doi.org/10.1117/12.621451
Event: Third International Conference on Experimental Mechanics and Third Conference of the Asian Committee on Experimental Mechanics, 2004, -, Singapore

Abstract

Transparent toughened glass panels are widely installed in high-rise buildings. There is a growing need for inspection to detect the presence of detrimental inclusions of Nickel Sulfide. These inclusions can cause toughened glass to shatter, possibly causing property damage or injury. Optical equipment has been developed which can detect the inclusions in-situ. Light is coupled into a glass panel and propagates along the glass by total internal reflection. An inclusion in the glass will cause the light to scatter. Once an inclusion is found, it will be observed at higher magnification and the detailed image will be processed. By the analysis of its key features, the inclusion type can be identified. The coupling medium is made of a transparent, soft and deformable material. The equipment can be attached to a glass panel by vacuum suction. The optical system can scan the whole glass panel with a constant force spring as anti-weight structure. The whole system is fast, convenient and highly effective. A patent has been filed for this apparatus.

Citation Download Citation

Xiang Li, Zhong Ping Fang, Ivan Reading, Liping Zhao, and Siew Loong Chow "In situ inspection of inclusions in toughened glass panels of high-rise buildings", Proc. SPIE 5852, Third International Conference on Experimental Mechanics and Third Conference of the Asian Committee on Experimental Mechanics, (12 April 2005); https://doi.org/10.1117/12.621451

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