@article{CHEN2007, 
author = {Junda CHEN and Guanchang JIN and Libo MENG},
title = {Applications of Digital Correlation Method to Structure Inspection},
year = {2007},
journal = {Tsinghua Science and Technology},
volume = {12},
number = {3},
pages = {237-243},
keywords = {structure inspection, optical non-destructive technique, digital correlation method (DCM), 3-D strain measurements},
url = {https://www.sciopen.com/article/10.1016/S1007-0214(07)70035-4},
doi = {10.1016/S1007-0214(07)70035-4},
abstract = {In structure inspections, applications of optical techniques are rare, but the advantages of a non-contact, full field technique using a simple apparatus are attractive. The main requirements for structure inspection are the full-field strain measurement with the required precision and on-site measurement ability. The digital correlation method (DCM), a new optical deformation measurement tool, can satisfy all of the requirements for structure inspection. A smoothing algorithm which can greatly improve the strain measurement precision, and a 3-D DCM have been developed in this paper. For verifying this improvement, a comparison of strain measurements by computer-simulated speckle images has been carried out. Additionally, three structure inspection examples that cover typical materials and structure styles are presented: the interface shear stress distribution for reinforced concrete piles bedded on rock, the 3-D strain distribution of a composite vessel structure, and stresses in a hookup that connects two steel bridge structures. All the examples show that the new structural inspection tool is exemplary and illustrates the obvious advantages of this optical non-destructive technique.}
}