Reason-A Technical Journal (Formerly Reason-A Technical Magazine)

The PDF file you selected should load here if your Web browser has a PDF reader plug-in installed (for example, a recent version of Adobe Acrobat Reader).

If you would like more information about how to print, save, and work with PDFs, Highwire Press provides a helpful Frequently Asked Questions about PDFs.

Alternatively, you can download the PDF file directly to your computer, from where it can be opened using a PDF reader. To download the PDF, click the Download link above.

Fullscreen Fullscreen Off


Martensitic stainless steels are very difficult to weld. In this proposed work, effort is given on picking TIG welding optimum input parametric combination to join AISI 420 grade sheets.Welding current, shielding gas flow rate and welding (travel) speed are taken as input parameters. Whereas, ultimate tensile strength (UTS) and ductility (D) i.e. elongation of the weldment are considered as response or output parameters. Initially, response surface methodology (RSM) based face-centered central composite design (CCD) is employed for mathematical modeling by regression analysis. Next, six efficient metaheuristics and RSM optimization have been applied to maximize the output welding parameters. From the simulated results, the optimum parametric setting i.e. best set of welding current, gas flow rate and welding speed is identified in for maximization of UTS and D. Confirmatory tests are also conducted to validate the proposed approach.

Keywords

AISI 420 Grade Martensitic Stainless Steel, Homogeneous TIG Welding, RSM Modeling, Metaheuristic, Optimization.
User
Notifications
Font Size