FIELD: physics.
SUBSTANCE: cuts are made in compression flanges of arched steel thin-sheet cold-rolled profiles followed by measurement of physical parameters and calculation of residual stress using a formula. The cuts are made in form of two parallel saw cuts with formation of strips of length L and width b, measurement of bending in the middle of the cut strip V and calculation of residual stress σz res using a formula.
EFFECT: simple method and accuracy of obtained values without significant effect on the bearing capacity of the structure.
4 cl, 5 dwg
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