Application of Taguchi approach on investigation of formability for perforated Al 8011 sheets

Abstract

Sheet metal forming is a vital manufacturing process used in the automobile, aerospace, agriculture and architecture industries. The sheet metal is formed to various shapes to make useful components. The perforated sheets replace the solid sheet in some applications because of aesthetic appearance and low weight compared to solid sheet metal. The ability of the sheet metals to be formed into various shapes without failure is termed as formability. The formability of perforated sheet depends on chemistry of the material, the forming parameters, dimensions of the perforations and ligament width. In this paper, the forming limit diagram for perforated Al 8011 sheet of 1mm thickness has been evaluated and the influences of the diameters of perforations and ligament widths on the forming limit strains have been studied. The ligament width is the most influencing factor which has the percentage contribution of 70.04 and 72.55 in Tension-Compression, 69.65 in Plane strain and 51.49 and 71.84 in Tension-Tension conditions. This work gives reasonable forming limit plastic strains of the perforated sheets with various combinations of the diameters of perforations and ligament widths and also gives the prediction of these strains by varying it.

Influence of process parameters on the cup drawing of aluminium 7075 sheet

“…The age hardening behaviour of thin walled tubes for various aging temperature, time and solutionizing temperature was successfully studied and predicted by using response surface methodology. Elangovan et al (2010) studied the influence of the diameters of perforations and ligament widths on the forming limit strains. It was observed that the forming limit strains were increased with the ligament width and decreased with diameter of perforations.…”

Protective properties of PPy‐Au nanocomposite coatings prepared by sonoelectrochemisty and optimized by the Taguchi method

“…In the Taguchi method, orthogonal arrays and analysis of variance (ANOVA) are used as tools of analysis. This method can minimize the number of experiments using a statistical design of experiments …”

Numerical modelling of aluminium sheets formability using response surface methodology

“…These results can be analysed and compared to bring out the common outcomes. An analytical method is presented for predicting the forming limit diagrams, which were achieved during the sheet metal forming operations, for the sheets having isotropy nature [2]. Results from this analysis are compared with the experimental data for AA3105 and AA8011 aluminium alloys.…”

“…Extensive research on its formability aspects is required to develop useful components of complex shapes [1]. The ability of the sheet metals to be formed into various shapes without failure is termed as formability [2]. In the past decade, many researchers investigated the results of mechanical properties and forming and fracture limit strains of various aluminium alloys.…”