STStudy of Stress Strain Curve of sheet metal by using Three Roller Bending Machine- A review

Abstract

Abstract-Roller bending process is used to transform a sheet or plate into hollow cylindrical shapes implementing plastic deformation techniques. Cylindrical and conical shells are the basic elements used for the various engineering applications like cylindrical tanks, boiler chambers, heat exchanger shells, pressure vessels and structures. In these cases, it is important to bend the sheet safely and working for longer life. In bending operation a metal sheet is subjected to sequential bending stresses for different position of top roller. Advanced techniques are used for verification of stress values up to ultimate tensile strength of material. Failure of material is detected at UTS value by visualizing the cracks.