Mechanical Strength of Thermoplastic Polyamide Welded by Nd:YAG Laser

Polymers

AlfredoB. de Morais¹  FábioA. O. Fernandes²  João Quintão²  AntónioB. Pereira² 

[1] Department of Mechanical Engineering, RISCO Research Unit, University of Aveiro, Campus Santiago, 3810-193 Aveiro, Portugal;TEMA—Centre for Mechanical Technology and Automation, Department of Mechanical Engineering, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal;

关键词: pulsed Nd:YAG laser welding;    thermoplastic;    polymer;    polyamide 6;    mechanical testing;   

DOI  :  10.3390/polym11091381

来源: DOAJ

【 摘 要 】

Welding is a fundamental process in many industries. It is a fast-changing technology, continuously evolving, with recent developments in laser and robotic welding, virtual reality and machine learning. Focusing on laser welding, there is a significant interest in this technology, as well as an increasing demand for high-strength lightweight structures, replacing metals in some applications. This work presents an experimental study of the mechanical properties of three types of polyamide 6 joints welded by Nd:YAG laser. After welding, tensile tests were carried out in order to evaluate the influence of the joint type and weld passes on joint strength and weld stresses. The results showed that fairly high weld stresses could be achieved, indicating that good-quality welds were achieved.

【 授权许可】

Unknown