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Experimental study and statistical analysis of bending titanium alloy sheet with continuous wave fiber laser

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Hussain M. , Gupta A. , Kumar P. , Hussain M. I. , Das A. K.

Archives of Civil and Mechanical Engineering

2022

tom Vol. 22, no. 3

art. no. e110

This paper represents the study of the bending behavior of sheets made of titanium alloy (Ti-6Al-4V) by irradiating with the continuous waveform fiber laser with maximum power capacity of 400 W. For this research, the impacts of various input parameters i.e., as laser scanning speed, laser power, and diameter of laser beam, on bending of Ti6Al4V sheet were taken into consideration. The effects on the bending angle by various parameters were investigated. All the experiments were conducted on 1 mm thick Ti6Al4V sheet. Microscopic analysis was also performed to observe the microstructural changes in the bend region of titanium sheet with increase in energy density of laser system. Laser scanning speed, laser power, and spot diameter of laser beam showed a significant amount of contribution in bending of titanium alloy sheet. Bending angle was found to increase with increase in energy density up to threshold level while it was found to decrease with increase in spot diameter and spot diameter. Fiber laser power and laser scanning speed were the most influential input parameters in deciding the amount of bending angle using statistical tools like Principal component analysis (PCA) and ANOVA. On successful application of Response surface methodology (RSM), laser power of 50.573 W and scanning speed of 108.242 mm/min were found to be optimum values for significant bend angle.