Application of the Digital Image Correlation Technique to Deformation Problems and Dynamic Characteristics of Mechanical System and Civil Structure

This thesis uses Digital Image Correlation (DIC) technique developed in our laboratory to experimental measurement of deformation of solids and structures for multi-scale and interdisciplinary problems. Digital Image Correlation is a non-contact and full-field measurement technique. The advantage of Digital Image Correlation is the simplicity and convenience of experiment setup. Recording the images of the deformation object, Digital Image Correlation has ability to measure displacement, velocity, acceleration and strain fields through our self-developed image processing technique. Using high-speed camera for dynamic problem like wave propagation of cantilever beam, however the issue of material testing problem in civil engineering can be measured by using high-resolution camera. The measurement of deformation for large structures in civil engineering is an important application and is also presented in the thesis. The trajectory analysis of precision table and high-speed spindle, vibration of cantilever beam, tensile test of reinforced and compression test of concrete related to mechanical and civil engineering are investigated. The results obtained from the Digital Image Correlation are also compared with that obtained by other experimental techniques to verify its reliability and accuracy.