A Mobile Shearography System for Non-Destructive Testing of Industrial and Artwork Components
By reason of their sensitivity, accuracy and non-contact as well as non-destructive characteristics, modern optical methods such as digital speckle shearography have found an increasing interest for NDT applications on factory floors. With new carbon fiber technologies and other lightweight constructions in aircraft and automotive manufacturing, adapted examination designs and especially developed testing methods are necessary. Shearography as a coherent optical method has been widely accepted as a useful NDT tool. It is a robust interferometric method to determine locations with maximum stress on various material structures. However, limitations of this technique can be found in the bulky equipment components, the interpretation of complex shearographic result images and at the work with non-cooperative surfaces such as dark absorber and bright shining reflectors. We report a mobile shearography system that was especially designed for investigations at aircraft and automotive construction sites. It is also useful to find out the current conditions of artworks.
Yongsheng Gao, Shuetfung Tse and Wei Gao
M. Kalms and W. Jueptner, "A Mobile Shearography System for Non-Destructive Testing of Industrial and Artwork Components", Key Engineering Materials, Vols. 295-296, pp. 165-170, 2005