Abstract
Laser processing is a rapidly growing key technology driven by several advantages such as cost and performance. Laser welding presents numerous advantages in comparison with other welding technologies, providing high reliability and cost-effective solutions. Significant interest in this technology, combined with the increasing demand for high-strength lightweight structures has led to an increasing interest in joining high-performance engineering thermoplastics by employing laser technologies. Laser transmission welding is the base method usually employed to successfully join two polymers, a transmitting one through which the laser penetrates, and another one responsible for absorbing the laser radiation, resulting in heat and melting of the two components. In this work, the weldability of solely transmitting high-performance engineering thermoplastic is analyzed. ERTALON® 6 SA, in its white version, is welded by a pulsed Nd:YAG laser. Tensile tests were performed in order to evaluate the quality of each joint by assessing its strength. A numerical model of the joint is also developed to support the theoretical approaches employed to justify the experimental observations.
Highlights
Laser processing is a key technology, addressing some major manufacturing challenges.Laser welding has become a very competitive technology [1]
The results presented below show results compared to the information provided by the manufacturer
The results presented below that thethat sizethe limitation did notdid affect results, obtaining realisticrealistic tensile tensile strength values. values
Summary
Laser welding has become a very competitive technology [1]. Automated laser welding systems are highly reliable, providing high quality, productivity, and cost-effective solutions. The automotive and aerospace industries, as well as the medical and electronic sectors, are some examples. This significant increasing demand is justified by the common requirements of high-quality, durable, reliable welds, which are essential in high-performance applications, especially when the welds are exposed to a wide span of environmental and load conditions [2,3], as well as by the low cost and ease of manufacture of high-strength polymeric materials and their lightweight composites [4,5,6,7,8]
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