@inproceedings{5e8037575a9a49e290aa2c754982ee0d,
title = "Online monitoring system for the tack of prepreg slit tapes used in automated fiber placement",
abstract = "The tack of prepreg slit tapes is a crucial parameter for ensuring defect free lay-up of complex parts via Automated Fiber Placement. Therefore, exact knowledge of the tack during placement is essential. Different methods for measuring tack are known in literature. However, the existing methods are not applicable to online monitoring of prepreg tack during part production. A novel testing principle was developed measuring the transverse force generated by slit tape sliding over a probe. This allows for online monitoring of the tack. A test bench was designed for validating the principle. In addition, a first parametric study was carried out investigating the influence of compaction force, tape velocity and age of the material on the measured transverse force. Increasing transverse forces with increasing compaction forces and decreasing velocities were observed in the experiments. The aging of the material and therefore the loss of tack also led to decreasing transverse forces.",
keywords = "Aging, Automated Fiber Placement, Online Monitoring, Prepreg, Tack",
author = "Benno B{\"o}ckl and Christian Jetten and Klaus Heller and Christoph Ebel and Klaus Drechsler",
note = "Publisher Copyright: {\textcopyright} CCM 2020 - 18th European Conference on Composite Materials. All rights reserved.; 18th European Conference on Composite Materials, ECCM 2018 ; Conference date: 24-06-2018 Through 28-06-2018",
year = "2020",
language = "English",
series = "ECCM 2018 - 18th European Conference on Composite Materials",
publisher = "Applied Mechanics Laboratory",
booktitle = "ECCM 2018 - 18th European Conference on Composite Materials",
}