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Various fissures and signs of corrosion in structural elements (a,b) Cracks of welded joints in bucket wheel support area caused by variable stresses; (c,d) Fissures caused by high roughness (Rz) value and material fatigue; (e,f) Cracks of welded joints in Heat Affected Zones (HAZ); (g,h) Corrosion of structural elements caused by exposure to environmental factors).
