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Mathematical modeling of heat distribution on carbon fiber Poly(ether-ether-ketone) (PEEK) composite during laser ablation
Optics & Laser Technology ( IF 5 ) Pub Date : 2020-03-06 , DOI: 10.1016/j.optlastec.2020.106190
Timur Canel , İrem Bağlan , Tamer Sınmazçelik

Since large amounts of energy are transferred precisely to the material in a very short time, laser and material parameters strongly affect the laser process quality. Mathematical modeling of heat distribution during cavity formation on carbon fiber reinforced PEEK composite material was performed. The temperature distribution equation has been obtained by the Fourier method.

At the first stage, 1 J energy laser beam was sent onto the material and the cavity on the composite material was obtained. The constants in the temperature distribution equation obtained by making measurements over the cavity were found. Then the cavities were created with 2, 3 and 4 J laser beams to prove its reliability of the model. The results obtained from the measurement on the cavities and calculated from the temperature distribution equation were compared.

Since the unidirectional carbon fibers were used, the obtained cavities have an elliptical shape. Verification experiments were carried out using two different heat conduction constants for in direction along fibers and perpendicular to carbon fibers. Experimental results and the mathematical model are in good agreement.



中文翻译:

碳纤维聚醚醚酮(PEEK)复合材料激光烧蚀过程中热分布的数学模型

由于大量能量会在很短的时间内精确地传递到材料,因此激光和材料参数会严重影响激光加工质量。对碳纤维增强的PEEK复合材料在型腔形成过程中的热分布进行了数学建模。温度分布方程式已通过傅立叶方法获得。

在第一阶段,将1 J能量激光束发送到材料上,并在复合材料上获得空腔。发现了通过对型腔进行测量而获得的温度分布方程中的常数。然后用2、3和4 J激光束创建腔体,以证明其模型的可靠性。比较了从模腔测量获得的结果和从温度分布方程计算得到的结果。

由于使用了单向碳纤维,因此所得到的空腔为椭圆形。验证实验是使用两个不同的热传导常数进行的,分别沿纤维方向和垂直于碳纤维的方向进行。实验结果与数学模型吻合良好。

更新日期:2020-03-06
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