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On the temperature evolution during continuous laser-assisted tape winding of multiple C/PEEK layers: The effect of roller deformation
International Journal of Material Forming ( IF 2.4 ) Pub Date : 2020-06-30 , DOI: 10.1007/s12289-020-01568-7
S. M. Amin Hosseini , Ismet Baran , Martin van Drongelen , Remko Akkerman

Laser-assisted tape winding (LATW) is a highly automated process for manufacturing tubular-like fiber-reinforced thermoplastic composites such as flywheels and pipes. One of the crucial parameters in the LATW process is the temperature of the nip point at which the incoming prepreg tape is bonded with the substrate by a compaction roller. Therefore, the temperature evolution of the nip point plays a significant role to have a proper consolidation at the tape-substrate interface. The nip point temperature is highly affected by the time-dependent geometry of the substrate and roller during continuous LATW of thick composite rings. In this paper, a critical assessment of the substrate and tape surface temperature evolution is investigated experimentally by means of a thermal camera during the LATW process of a 26-layers thick carbon/PEEK composites. A three-dimensional (3D) optical model is coupled with a thermal model in which the substrate computational domain is updated with respect to the deposited tapes. A good agreement is found between the measured and predicted tape and substrate temperatures. The total absorbed heat and heated length of the substrate and tape are described based on the roller deformation. An increase in tape and substrate nip point temperatures is found with an increase in roller deformation during consecutive winding. It is also found that the consolidation pressure and contact length at the roller-substrate interface increases during the winding process. Accordingly, the heat transfer coefficient at the roller-substrate interface is studied using the developed process model.



中文翻译:

连续C / PEEK多层激光辅助胶带缠绕过程中的温度变化:辊变形的影响

激光辅助绕带(LATW)是一种高度自动化的过程,用于制造管状纤维增强的热塑性复合材料,例如飞轮和管道。LATW工艺中的关键参数之一是压区的温度,在该温度下,进入的预浸料带通过压实辊与基材粘合。因此,咬合点的温度变化对于在带-基底界面处具有适当的固结起着重要作用。压区温度在厚复合材料环的连续LATW期间受基材和辊子随时间变化的几何形状的高度影响。在本文中,在26层厚的碳/ PEEK复合材料的LATW过程中,通过热像仪对基材和胶带表面温度演变的关键评估进行了实验研究。三维(3D)光学模型与热模型耦合,其中相对于沉积的磁带更新了基板计算域。在测得的和预测的胶带和基材温度之间找到了很好的一致性。根据辊的变形来描述基材和胶带的总吸收热量和加热长度。随着连续卷绕期间辊变形的增加,发现带和基材咬合点温度的增加。还发现在卷绕过程中,在辊-基底界面处的固结压力和接触长度增加。因此,使用所开发的过程模型研究了辊-基底界面处的传热系数。

更新日期:2020-06-30
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