Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Characterization and Simulation of the Interface between a Continuous and Discontinuous Fiber Reinforced Thermoplastic by Using the Climbing Drum Peel Test Considering Humidity

Nicolas Christ
* ORCID logo ,
Benedikt M. Scheuring
* ORCID logo ,
Christoph Schelleis
ORCID logo ,
Wilfried V. Liebig
ORCID logo ,
John Montesano
ORCID logo ,
Kay A. Weidenmann
,
Jörg Hohe
Version 1 : Received: 23 February 2024 / Approved: 26 February 2024 / Online: 26 February 2024 (11:46:50 CET)

A peer-reviewed article of this Preprint also exists.

Christ , N.; Scheuring , B.M.; Schelleis , C.; Liebig , W.V.; Montesano, J.; Weidenmann , K.A.; Hohe , J. Characterization and Simulation of the Interface between a Continuous and Discontinuous Carbon Fiber Reinforced Thermoplastic by Using the Climbing Drum Peel Test Considering Humidity. Polymers 2024, 16, 976. Christ , N.; Scheuring , B.M.; Schelleis , C.; Liebig , W.V.; Montesano, J.; Weidenmann , K.A.; Hohe , J. Characterization and Simulation of the Interface between a Continuous and Discontinuous Carbon Fiber Reinforced Thermoplastic by Using the Climbing Drum Peel Test Considering Humidity. Polymers 2024, 16, 976.

Abstract

The objective of this paper is to investigate the debonding behavior of the interface between continuously and discontinuously fiber reinforced thermoplastics using the climbing drum peel test. The study emphasizes the importance of considering different climatic boundary conditions due to the properties of thermoplastics. Specimens with varying moisture contents are prepared and tested. It is observed that an increase in moisture content initially results in a higher fracture surface energy being required to separate the two materials, but a further increase results in a decrease of the required energy. The study presents an explanatory model of increasing plasticization of the polymer due to increased polymer chain mobility, which results in more deformation energy being required to propagate the crack. The experiment is also modeled numerically for the first time with cohesive surfaces, which successfully reproduces the force-displacement curve in the experiment.

Keywords

Carbon fibers; Polyamide 6; Layered structures; Delamination; Cohesive interface modeling; Mechanical testing; Continuous-Discontinuous FRP

Subject

Chemistry and Materials Science, Polymers and Plastics

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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