Displacements and strains are very important to evaluate the materials and structures because it are one of the important factors to machine's life cycle and safety. Typically the strain gauge, which are contacting-type and point wise measurement methods has been employed to measure the displacement and strain. It has very low cost and measurement errors so that it are very widely used in the in the solid mechanics and industry. However, it has disadvantages that are impossible to be applied under condition of specific object shape, surface roughness and temperature. Also, it is difficult to measure the defect propagation and stress distribution because many strain gauges are needed and it should be installed as an array form. There are various non-contacting measurement methods to measure the deformation and strain. the non-contacting measurement methods, such as the ESPI (Electric Speckle Pattern Interferometer), Moire, Shearography, Holography, have been developed and applied for measuring the deformation and strain. These are possible to measure the full-field measurement system and it have very high sensitivity of the object deformations by using the interferometer. But, these measurement methods require a coherent light source(Laser), and the measurement of the deformation and strain are normally conducted in the laboratory because it are very sensitive of the vibrations. Therefore, it are impossible to apply the industry because vibration isolations are impossible in the factories. As a representative strain gage and non-interferometric optical measurement methods, The digital image correlation method has been widely accepted and used as a powerful and flexible tool for the displacement and strain measurement in the field of the experimental solid mechanics. Digital image correlation is a non-contacting vision measurement method. It is based on the image analysis technology which uses gray-scale values of the reflective light distribution between the reference and the deformed images under influence of external forces. Therefore, it is possible to measure displacement and strain rates by using images from X-ray, CT(Computed-tomography) and SEM (Scanning electron microscope) devices. Furthermore, it is possible to measure defect propagation and strain distribution of the measured objects under external forces. However, digital image correlation measurement methods required many times to analysis the image correlation. In this study, digital image correlation measurement system are developed to replace the conventional contacting and non- contacting measurement system for measuring a displacement and strain rate. Portable digital image correlation devices are designed and image analysis algorithms are developed to apply the experimental solid mechanics in the industry. To implement of developed image analysis algorithms for portable digital image correlation measurement system, LabVIEW 2012 programming platform was used. To secure the reliability of the developed digital image correlation system, foundational test are conducted by using conventional measuring methods such as the universal test machine, extensometer and so on. The developed digital image correlation system is possible to measure the 0.001 sub-pixel displacements and it has less than 5% error rate comparing with the conventional measuring methods.In the application field of the digital image correlation system, the open hole tension test for carbon composite materials and tensile test for measuring the characteristics of the friction stir welding zone were conducted.The open hole tension test was conducted for measuring the mechanical properties of carbon composite materials under the stress concentration by using the developed portable digital image correlation system. The carbon composite material has a high elastic modulus and it is very brittle. Also, measuring the fracture position is very difficult. The developed portable digital image correlation system was possible to measure the fracture mechanism, fracture positions, and stress distribution of the carbon composite by the stress concentration phenomenon at the open hole.Tensile tests were conducted by using the developed portable digital image correlation system to evaluate the characteristics of friction stir welding zone. Friction stir welding has a higher welding strength than other welding methods in the aluminum and magnesium welding. Also, it is possible to weld the dissimilar materials. However, it has different welding strength into the welding zone because it is solid state welding methods. The friction stir welding zone consists of the SZ(Stir zone), TMZ(Thermo-mechanically heat affected zone), and HAZ(Heat affected zone). The HAZ has a lower welding strength than other welding zones. Particularly, dissimilar friction stir welding zone has a different mechanical property than conventional friction stir welding zone. The developed digital image correlation system is possible to measure the facture mechanism of the friction stir welding zone quantitatively.