This paper presents an improved automated grid method using loop encoding technique which can be used to measure deformation of large specimen with cavity in situation. The method represents an extension of the applied field of automated grid method. New software for grid auto process and analysis based on the improved method is developed. Computer simulations are conducted and validated against the experiments. The accuracy of the method is also discussed.
Shi Ping He,
"Improved automated grid method", Proc. SPIE 4537, Third International Conference on Experimental Mechanics, (29 May 2002); doi: 10.1117/12.468850; https://doi.org/10.1117/12.468850