Abstract
The strength deformation behavior of thin walled aluminium alloy 6063 tubes under flexure has been presented. The effects of deformation, thinning, thickening of the tube wall surfaces, ovalness of the tube and springback angleat critical cross sections of the aluminium tubes are studiedunder different computer numerical control (CNC) bending conditions. Aluminium alloy tubes of 25mm outer diameter, 390 mm length and varying thickness of 1, 1.5 and 3mm have been used for testing. It is observed that, thinning and thickening of inner and outer bend of tube gradually rises with increase in the bend angle and meantime surface flattening and non-circularity of tube in terms diameters also upsurges for the increase in bend angle.Furthermore, experimental outcome of deformed tube is compared and characteristic result for effect of experimental parameters is found to be in good agreement with literature values.
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