PSI - Issue 73

Petr Mynarcik et al. / Procedia Structural Integrity 73 (2025) 112–118 Petr Mynarcik, Miroslav Vacek, David Mikolasek, Vladislav Bures/ Structural Integrity Procedia 00 (2025) 000–000

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Fig. 5. Precision 3D profilometric scan - sample 100 days in corrosion atmosphere exposition

Fig. 6. Precision 3D profilometric scan - sample 140 days in corrosion atmosphere exposition

3. Conclusion Structures with this type of truss system can be dangerous because the wires that hold the whole truss together can collapse due to the brittle fracture of the prestressing wires. This is a big problem because these failures can occur quickly and without warning, which is dangerous. It is essential to understand how likely the wires will be damaged by corrosion and how quickly it will happen. This information is necessary to assess the safety of the structure and ensure that it will last. This problem is made worse by the fact that these supports often support roofs in places where people work. To better understand how the wire would corrode, a detailed test was performed on 30 samples. These samples were also scanned using the Keyence VR-6200 3D profilometer, which made a high-resolution 3D model of the wire surfaces. With the 3D model of the corroded surface, it is possible to accurately measure the cross-sectional area at points of damage after a destructive test. This provides crucial data to assess the extent of damage. It is also possible to export the 3D models of the damaged wire surfaces from the 3D profilometer. These models can be used as input geometry for the finite element method (FEM) software. However, at this stage, the usage of