Available online at www.sciencedirect.com ScienceDirect Materials Today: Proceedings 4 (2018) 3674–3681 www.materialstoday.com/proceedings 2214-7853© 2017 Elsevier Ltd. All rights reserved. Selection and/or Peer-review under responsibility of 7th International Conference of Materials Processing and Characterization. ICMPC 2017 A Study On The Effect Of Process Parameters On Weld Width And Heat Affected Zone Of Pulsed Laser Welding Of Dissimilar Transparent Thermoplastics Without Filler Materials In Lap Joint Configuration Raktim Bhattacharya a* , Nitesh Kumar b , Nikhil Kumar c , Asish Bandyopadhyay d a M.Tech. Student, School of Laser Science and Engineering, Jadavpur University, Kolkata-700032,India b Assistant professor, Mechanical Engineering Department,Brainware Group of Instituions, Kolkata-700124,India c Ph.D Student, Mechanical Engineering Department, Jadavpur University, Kolkata-700032,India d Professor, Mechanical Engineering Department, Jadavpur University, Kolkata-700032,India Abstract In the present work, through transmission laser welding of polycarbonate and acrylic have been conducted forming lap joint configuration. The effect of process parameters, namely, laser power, scanning speed and frequency on the weld width and HAZ (Heat affected zone) of weld bead geometry have been investigated, by using an empirical model developed by response surface methodology (RSM). The quadratic model has been developed to correlate the input parameters with responses. Also analysis-of- variance (ANOVA) has been conducted to find out the significant parameter/s in the process. It is found that power and scanning speed have significant influence in controlling the weld width. Whereas, power, frequency and scanning speed have played that role in case of HAZ. The statistical software design expert 10 has been used for experimental design and analysis. © 2017 Elsevier Ltd. All rights reserved. Selection and/or Peer-review under responsibility of 7th International Conference of Materials Processing and Characterization. Keywords: Laser welding; Response surface methodology; Analysis-of-Variance; Weld width; HAZ. * Corresponding author. Tel.:+9-189-001-72670. E-mail address: raktimdgp@gmail.com