Detail publikace

Self-stimulating sandwich structure with resistive heating honeycomb core for quick thermographic inspection

TŘÍSKA, V. HNIDKA, J. ROZEHNAL, D.

Originální název

Self-stimulating sandwich structure with resistive heating honeycomb core for quick thermographic inspection

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

The paper presents the novel concept of a honeycomb sandwich structure with carbon fibre reinforced plastics face sheets capable of its own internal thermal stimulation for rapid active thermographic inspection, where an adapted electrically powered honeycomb core serves as a heat source. The proposed sandwich structure effectively reduces the equipment necessary for external thermal stimulation, while improving the controllability of the thermal pulse. A new design of the modified aluminum honeycomb core, required for resistance heating with sufficient homogeneity, is proposed. Numerical modeling was used to test the concept's viability and to predict its efficiency for defect detection. The altered honeycomb was then manufactured and its heating characteristics were measured. This structure was then used as a core in a sandwich specimen with carbon fibre reinforced plastics face sheets, which also contained artificial defects embedded in the face sheets and in the face sheet/core interface. The applicability of the proposed modified honeycomb structure for thermal stimulation for active infrared thermography was experimentally confirmed, demonstrating the ability to visualize even very small defects simulating disbonding, or delamination. The impact of water ingress on the operation of the concept was tested as well. The proposed method has the potential to simplify and expedite the non-destructive inspection of aviation-grade sandwich structures in service via active infrared thermography.

Klíčová slova

non-destructive inspection; honeycomb sandwich; aerospace; resistive core; active infrared thermography

Autoři

TŘÍSKA, V.; HNIDKA, J.; ROZEHNAL, D.

Vydáno

1. 8. 2023

Nakladatel

IOP Publishing

Místo

BRISTOL

ISSN

2053-1591

Periodikum

Materials Research Express

Ročník

10

Číslo

8

Stát

Spojené království Velké Británie a Severního Irska

Strany od

1

Strany do

16

Strany počet

16

URL

https://iopscience.iop.org/article/10.1088/2053-1591/ace237

Plný text v Digitální knihovně

http://hdl.handle.net/11012/245023

BibTex

@article{BUT184655,
  author="Václav {Tříska} and Jakub {Hnidka} and Dalibor {Rozehnal}",
  title="Self-stimulating sandwich structure with resistive heating honeycomb core for quick thermographic inspection",
  journal="Materials Research Express",
  year="2023",
  volume="10",
  number="8",
  pages="1--16",
  doi="10.1088/2053-1591/ace237",
  issn="2053-1591",
  url="https://iopscience.iop.org/article/10.1088/2053-1591/ace237"
}