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Effects of Process Parameters on the Circular Contour Laser Transmission Welding Process
N. Kumar, S. Mondal, A. Bandyopadhyay and B.K. Bhattacharyya

In the present work circular contour diode laser transmission welding of acrylic plastics has been investigated. Lap joints are made. The key process parameters selected are laser current, stand-off distance and rotational speed. The experiments are performed through L9 Taguchi orthogonal array. Weld width and breaking load have been taken as responses. MINITAB 16 software has been used for experimental design and analyses. Statistical techniques and signal-to-noise ratio (SNR) have been applied on experimental data to identify the significant process parameter/s influencing the responses. Response surface methodology (RSM) is applied for developing mathematical models based on experimental results. Comparison between experimental and predicted values has been made to validate the developed mathematical models.

Keywords: Diode laser, circular contour weld, transmission welding, laser welding, Taguchi method, signal-to-noise ratio (SNR), response surface methodology (RSM), mathematical model

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