Open AccessMulti-Response Optimization of Parameters in FSW for Tailor Welded Blanks AA5052-H32 and AA5083-O using Response Surface Methodology
Author(s) -
Praveen Kumar*,
Sharad Sharma
Publication year - 2020
Publication title -
international journal of innovative technology and exploring engineering
Language(s) - English
Resource type - Journals
ISSN - 2278-3075
DOI - 10.35940/ijitee.e3205.039520
Subject(s) - formability , response surface methodology , ultimate tensile strength , materials science , welding , indentation hardness , elongation , composite material , central composite design , joint (building) , design of experiments , blank , composite number , rotational speed , structural engineering , mathematics , mechanical engineering , engineering , microstructure , statistics
Tensile properties, microhardness, and formability of the tailor welded blank of AA5052-H32 and AA5083-O were investigated. To detect the influence of FSW parameters such as shoulder diameter (SD), rotational speed (RS), and travel speed (TS), a central composite design (CCD) was derived. The response surface methodology (RSM) technique is used to develop the mathematical model and optimization of multiple responses, i.e., ultimate tensile strength (UTS), Yield strength (YS), percentage elongation (TE), dome height (DH), and microhardness (μH). Analysis of variance (ANOVA) technique is used to validate the competency of the established model, and the regression equation is derived to predict the value of output responses. It is found that the welding parameter of FSW plays a significant role in fabricating the joint. It is observed that for the welded combination of AA5052-H32 and AA5083-O, the metallurgically defect-free and sound weld produced. The results are very much significant to a better understanding of the effect of the combination of SD, TS, RS to fabricate the FSW joint. The experimental and predicted result shows a good relationship with each other.