Effect of Scratching and Bending Degree on the Residual Stress of the 7055 Aluminum Alloy Plate

Abstract This study investigated the effects of scratches and bending on surface stress aluminum alloy plates with varying thicknesses. The purpose this was to provide guidance for testing different “birth death” element method used simulate generation scratches, while field under pre-stretched state obtained through displacement one end board by 2.5%. X-ray residual analyzer (μ-x360 s) experimentally characterize level plate. research results showed that near decreases significantly, plate significantly after bending. changes in values increasing degree thicknesses thicker plate, greater tensile effect resulting smaller compressive stress. longitudinal non-uniformity also analyzed, it found error within ±5 MPa. In conclusion, provides useful accurate measurement thicknesses, considering