Multi-Factors Interaction Effects of Process Parameters on the Joint Strength of Laser Transmission Joining between PC and PA66

Abstract

This paper presents a laser transmission joining (LTJ) experiment between thermoplastic Polycarbonate (PC) and glass reinforced nylon (PA66GF) using diode laser equipment. Laser transmission joining experimental design and experiment are carried out according to a single process parameters window. Response surface methodology (RSM) in Design-Expert v7 software is employed to develop mathematical models between LTJ process parameters and joint strength. The interaction effects of joining process parameters (line energy, spot diameter, clamp pressure) on the joint strength are investigated using analysis-of-variance (ANOVA), the result shows that the interaction effect of line energy and spot diameter has maximum influence on the joint quality. Finally, the predicted values from mathematical models developed by RSM are compared with the experimental values and it is found that they are nearly agreed with each other. The purpose of predicting joint strength based on reasonable process parameters is achieved.

Effect of laser processing parameters and carbon black on morphological and mechanical properties of welded polypropylene

“…A greater variation was observed on the Thermo-mechanical performance at 0.5 wt.% CB due to volumetric heat generation. According to the literature, there may be a generation of higher van der Waals forces at higher line energy and an improved weld strength [50] with more material being melted, resulting in a wider WW.…”

Laser Transmission Welding of Semi-Crystalline Polymers and Their Composites: A Critical Review

“…Multiple factors and their interactions have to be kept in mind to develop a good joint strength product. Huang et al [ 195 ] studied joint strength based on line energy and clamp pressure interaction with the help of a response surface plot while using a 130/140 diode laser CW type for joining PC and PA66GF (glass reinforced polyamide). The response surface plot showed an increase in the joint strength with line energy at 0.11~5.00 J/mm and clamp pressure at 0~0.4 MPa.…”