Stamp forming of partially consolidated CF/PEEK tape preforms produced in a high-speed automated tape laying process

J. Weber, J. Schlimbach
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Abstract

To achieve short cycle times, CF/PEEK tape preforms are laid up quickly in ATL, thus tape preforms are only partially consolidated. Different gas volume flows are set to vary the energy input during tape laying at 1 m/s. The tape preforms are characterized by means of thickness measurements, microsection analysis, peel-test, compression thermal analysis and flexural test to assess the degree of consolidation. Subsequently to ATL, tape preforms are processed in stamp forming at different pressure settings in a rapid-closing downstroke press. The resulting laminates are analyzed to assess the influence of tape preform consolidation and molding pressure. The results reveal a dependency between gas volume flow during automated tape laying and consolidation of the correspondent tape preforms. Laminate quality of specimen after stamp forming is independent to the tape preform consolidation according to the results of this investigation.
在高速自动化胶带铺设过程中生产的部分固结CF/PEEK胶带预制件的冲压成型
为了实现较短的周期时间,CF/PEEK带预成型在ATL中快速堆积,因此带预成型仅部分固化。设置不同的气体体积流量来改变胶带敷设过程中1m /s的能量输入。通过厚度测量、显微切片分析、剥离测试、压缩热分析和弯曲测试来评估胶带预制体的固结程度。随后,在ATL中,在快速关闭的下冲程压力机中,在不同压力设置下处理带预成形件。对所得到的层压板进行了分析,以评估胶带预制体固结和成型压力的影响。结果表明,在自动化胶带铺设过程中,气体体积流量与相应胶带预制件的固结之间存在依赖关系。研究结果表明,冲压成形后试样的层压质量与带坯固结无关。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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