Please use this identifier to cite or link to this item:
Publisher DOI: 10.1016/j.jcomc.2021.100191
Title: Strain sensing in GFRP via fully integrated carbon nanotube epoxy film sensors
Language: English
Authors: Buggisch, Christina 
Gibhardt, Dennis 
Felmet, Nils 
Tetzner, Yannick 
Fiedler, Bodo  
Keywords: Damage; Glass fibre; Health monitoring; Multifunctional composite; SHM
Issue Date: Oct-2021
Publisher: Elsevier
Source: Composites Part C: Open Access 6 : 100191 (2021-10)
Abstract (english): 
Structural health monitoring of composite structures enables early damage detection to prevent critical component failure. Surface-mounted strain gauges are commonly applied to monitor the integrity of composite structures in highly loaded areas. However, strain gauges can only measure strain on the structure's surface and are exposed to environmental influences. Within this paper, fully integrated carbon nanotube thin-film sensors for strain and damage sensing in glass fibre reinforced polymers (GFRP) via electrical resistance measurements are presented. Single wall carbon nanotube epoxy thin-films were manufactured using a manual film applicator, partially pre-cured, placed on dry glass fabrics and infused in a resin transfer moulding process. The mechanical properties of the composites and strain sensing capabilities of the integrated sensors were studied for various load cases and different laminate lay-ups. Results of quasi-static and step-wise three-point bending and tensile tests show that the integrated films allow for localised strain measurements in GFRP without significant loss of mechanical properties. Open hole tensile tests proof the ability to monitor local strain and damage in highly loaded areas enabling failure prediction via threshold resistance change values. The proposed thin-films enable a tailored strain and damage monitoring of GFRP offering the possibility for measurements at different material depths, over large sections or selectively in highly loaded areas. The manufacturing process is easily automatable and suitable for large scale manufacturing.
DOI: 10.15480/882.4118
ISSN: 2666-6820
Journal: Composites Part C: Open Access 
Institute: Kunststoffe und Verbundwerkstoffe M-11 
Document Type: Article
Project: Multifunktionale Komposite - Gedruckte Elektronik zur strukturintegrierten Zustandsüberwachung von Faser-Kunststoff-Verbunden 
Publikationsfonds 2021 
Funded by: Deutsche Forschungsgemeinschaft (DFG) 
More Funding information: This research was funded by the Deutsche Forschungsgemeinschaft (DFG - German Research Foundation) within the project number 393868053. We acknowledge support for the Open Access fees by Hamburg University of Technology (TUHH) in the funding programme Open Access Publishing.
License: CC BY-NC-ND 4.0 (Attribution-NonCommercial-NoDerivatives) CC BY-NC-ND 4.0 (Attribution-NonCommercial-NoDerivatives)
Appears in Collections:Publications with fulltext

Files in This Item:
File Description SizeFormat
1-s2.0-S2666682021000840-main.pdfVerlagsversion1,86 MBAdobe PDFView/Open
Show full item record

Page view(s)

Last Week
Last month
checked on Jun 2, 2023


checked on Jun 2, 2023

Google ScholarTM


Note about this record

Cite this record


This item is licensed under a Creative Commons License Creative Commons