Analysis of Quasi-Simultaneous Laser Welding in T-Joint Configuration for PMMA-ABS Using Circular Wobble Geometry
Antonio Lezzoche, Giulia Mossotti, Carmelo Nicosia, Marco Baggi, Michele Perlo, Luciano Scaltrito, Andrea Ancillao
TL;DR
This study explores laser welding of PMMA and ABS in a T-joint using a circular wobble path to optimize weld quality and speed for industrial use.
Contribution
The study introduces a quasi-simultaneous laser welding method optimized for T-joints using a circular wobble geometry.
Findings
Higher energy density increases penetration depth in PMMA-ABS welds.
Weld strength peaks at 20 scans and laser power above 130 W.
A configuration with 1137 N strength and 0.8 s welding time is suitable for mass production.
Abstract
The focus of this study was the investigation of the quasi-simultaneous laser welding (QSW) technique of polymethyl methacrylate (PMMA) and acrylonitrile butadiene styrene (ABS) in a T-joint configuration using a circular wobble laser path. The main aim was to find how laser parameters, such as scanning speed, number of scans, and laser power, influence key indicators of weld quality: penetration depth and weld strength. A range of scanning speeds (1–2 m/s) and scan repetitions (20–70) was explored, with the goal of keeping the total welding time around 1 s, a time compatible with industrial mass production. The results demonstrated a clear correlation between linear energy density and penetration depth. Deeper penetrations were achieved at higher energy levels. Weld strength was maximized with a lower number of scans (20) and higher powers (above 130 W). The configuration offering the…
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Taxonomy
TopicsManufacturing Process and Optimization · Additive Manufacturing Materials and Processes · Welding Techniques and Residual Stresses