Comparison of pulse mode nd:yag laser assisted metal plastic joining with competitive technologies

Abstract

The joining of plastics and metals in order to produce lightweight but high strength parts becomes more and more relevant for modern industry. Bonding different materials was carried so far out primarily by adhesives, however, novel technologies, like laser assisted metal-plastic joining are showing benefits against current technologies. In the course of this study, the authors joined PMMA plastic to structural steel by adhesives and by laser assisted metal-plastic joining, applying continuous mode and pulse mode beam sources as well. Mechanical tests were carried out to compare the different methods, and to be able to position the LAMP joining within the field of joining technologies. Results show clearly the advantages of pulse mode laser transmission joining.