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引用次数: 0
摘要
我们的研究表明，在激光作用期间和之后的热应力和膨胀收缩力的影响对实现强焊接，即焊缝的抗拉强度高于原热塑性塑料的80%起着最终的作用。这对工程参数有直接的影响，使得有必要在焊接体积上有最小的激光束直径。在模型中引入这一因素可以实现高达14 m s-1的搭接焊接速度，以及通过这种新的传输焊接技术进行焊接切割
Influence of thermal stresses in modelling the lap welding of thermoplastic films
Our study has shown that the influence of the thermal stresses and expansion and contraction forces acting during and after laser action plays an ultimate role on the achievement of strong welds, that is, weld with tensile strength higher than 80% of that of the original thermoplastic. This has direct influence on engineering parameters, making necessary to have a minimum laser beam diameter on the welding volume. Introduction of this factor on the model allowed the achievement of lap welding speeds up to 14 m s-1, as well as cutting with welding through this new transmission welding technique
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