研究目的
To analyze the weldability of solely transmitting high-performance engineering thermoplastic, specifically ERTALON 6 SA in its white version, using a pulsed Nd:YAG laser, and to evaluate the quality of each joint by assessing its strength through tensile tests and developing a numerical model of the joint.
研究成果
The study successfully contributed to the transmission welding of white polymers, considered the most difficult to weld, by establishing an excellent background for future studies. It identified the main mechanisms of failure and the way the welding parameters need to be optimized to improve the mechanical strength of the joint. The numerical model revealed necking behavior and non-uniform local stress concentrations in the joint ends, supporting the findings of premature failure for relatively low loads.
研究不足
The joint strength values are still far from the base material performance, indicating that the welding parameters need further optimization. The study also highlights the challenge of welding two transmitting components, especially white ones, without employing an absorptive part.
1：Experimental Design and Method Selection:
The study employed a pulsed Nd:YAG laser for welding ERTALON 6 SA, a high-performance engineering thermoplastic. The methodology included optimizing welding parameters to achieve successful welds with similar mechanical properties to the base material.
2：Sample Selection and Data Sources:
The material was obtained in the form of rods with a diameter of 30 mm, cut into 1 mm thick discs, polished to achieve smooth and uniform surfaces.
3：List of Experimental Equipment and Materials:
A Sisma SWA300 Nd:YAG laser machine was used for welding, and tensile tests were performed in a Shimadzu AGX 10 kN universal testing machine.
4：Experimental Procedures and Operational Workflow:
The welding configuration adopted was an overlap configuration, with samples welded in a clamp system to ensure proper contact. Tensile tests were performed to assess the quality of the welds.
5：Data Analysis Methods:
The quality of each joint was evaluated by assessing its strength through tensile tests, and a numerical model of the joint was developed to support the theoretical approaches.
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