The effects of process parameters on residual stresses in single point incremental forming of A1050 aluminum using ANOVA model

Abstract EN

Incremental sheet metal forming is a modern technique of sheet metal forming in which a uniform sheet is locally deformed during the progressive action of a forming tool.

The tool movement is governed by a CNC milling machine.

The tool locally deforms and by this way the sheet with pure deformation stretching.

The aim of the present work is to inspect, experimentally, the state of the residual stresses induced in SPIF parts made by A1050 aluminum.

The forming surface was measured at four different angles using a ORIONRKS 6000 test (the X-ray diffraction technology was used to detect the residual stress) measuring instrument with the angles (0o, 15o, 30o and 45o) and the average residual stress value is recorded in (MPa), the residual stress in original blanks is (-6.29MPa).

This specialized stress analysis system using the side-inclination method includes stress analysis software, the stress analysis sample stand and X-ray tube.

A comparison study is made for tabulated values and experimental values for residual stress by using ANOVA model with the contribution of rotational speed, feed rate and forming depth with respect to residual stress is (63.7, 4.3 and 32)% respectively..