Experimental quality assessment of thermoplastic composite corner regions manufactured using laser-assisted tape placement

Daniël Peeters, David Jones, Ronan O'Higgins*, Paul M. Weaver

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)
67 Downloads (Pure)

Abstract

Over the past 25 years, interest in thermoplastic composites in aircraft has steadily increased. Combining winding and laser-assisted tape placement is a promising method to manufacture thermoplastic structures using in-situ consolidation, as shown recently by manufacturing a variable stiffness, unitized, integrated-stiffener thermoplastic wingbox at the University of Limerick. The corner regions are a critical point of the structure and require in-depth characterization studies, for example by unfolding L-shaped samples in a 4-point bend test. In this work, samples with radii varying from 2 to 10 mm were manufactured and tested. Two manufacturing parameters were varied: the rotational speed and acceleration of the tool. Test data show that decreasing the radius increases the corner strength, but an optimum radius exists to withstand a maximum unfolding force/moment. In addition, the slowest deposition rate with least acceleration of the head used during manufacturing lead to the highest corner strength for the same radius.

Original languageEnglish
Article number115911
JournalComposite Structures
Volume297
DOIs
Publication statusPublished - 2022

Keywords

  • A. Thermoplastic resin
  • D. Mechanical testing
  • E. Automated fibre placement
  • E. Tape placement

Fingerprint

Dive into the research topics of 'Experimental quality assessment of thermoplastic composite corner regions manufactured using laser-assisted tape placement'. Together they form a unique fingerprint.

Cite this