Abstract
The work presents examples of possibilities created by multi-unit 3D correlation system. Experience is the non-contact measurement of displacement and strains of slender compression bars or tensile samples. Experimental research show that as a result of axial compression of slender elements with the length substantially exceeding the cross-sectional dimensions, element destruction occurs at loads less than the respective compressive strength, resulting in deformation of the object. We present the results of numerical analysis, compared with exercise of carrying on a test bench.
Highlights
Today's facilities are characterized by high functional diversity, which, while maintaining high quality of workmanship, is very difficult
The first was the determination of the deformation in tensile test specimens made of the base material and with a welded joint, while the other consisted in determining the displacement of the compression slim bar
The use of multi-camera 3D correlation system allowed the analysis of deformation for the selected material points throughout the measuring sample
Summary
Today's facilities are characterized by high functional diversity, which, while maintaining high quality of workmanship, is very difficult. The advantage of using optical measurement methods of deformation, strains or stress distribution is the ability to identify changes in the surface of the examined material at the microscale level, allowing for early identification of the process before its dynamic development. The digital image correlation method uses images taken at the same time by several optical cameras with high sensitivity to deformation and vibration of the object being observed. This method of measurement is increasingly used to determine the components of stresses, deformations or displacements in laboratory conditions, and to identify defects in machine components under the influence of static loads or dynamic variables over time [1]. Measurement methods allow for easier adaptation to the measurement of parts of machine parts in their natural industrial environment under real operating conditions
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