Photothermal defect imaging in hybrid fiber metal laminates using the virtual wave concept-Reference-Cited by-同舟云学术

Photothermal defect imaging in hybrid fiber metal laminates using the virtual wave concept

Published:2024-02-16 Issue:7 Volume:135 Page:
ISSN:0021-8979
Container-title:Journal of Applied Physics
language:en
Short-container-title:

Author:

Gahleitner L.¹^ORCID,Thummerer G.²^ORCID,Plank B.³^ORCID,Wiedemann J.⁴^ORCID,Mayr G.¹^ORCID,Hühne C.⁴⁵^ORCID,Burgholzer P.⁶^ORCID,Cakmak U.⁷^ORCID

Affiliation:

1. Research Group of Thermography & NDT, University of Applied Sciences Upper Austria 1 , Stelzhamerstrasse 23, 4600 Wels, Austria

2. voidsy gmbh, Stelzhamerstrasse 16 2 , 4600 Wels, Austria

3. Research Group of Computed Tomography, University of Applied Sciences Upper Austria 3 , Stelzhamerstrasse 23, 4600 Wels, Austria

4. TU Braunschweig, Institute of Mechanics and Adaptronics 4 , Langer Kamp 6, 38106 Braunschweig, Germany

5. German Aerospace Center (DLR), Institute of Lightweight Systems 5 , Lilienthalplatz 7, 38108 Braunschweig, Germany

6. Research Center for Non Destructive Testing GmbH 6 , Altenbergerstrasse 69, 4040 Linz, Austria

7. Johannes Kepler University Linz, Institute of Polymer Product Engineering (IPPE) 7 , Altenbergerstrasse 69, 4040 Linz, Austria

Abstract

This study presents photothermal imaging results of subsurface material defects within fiber metal laminates utilizing the virtual wave concept. Therefore, we theoretically analyze the propagation of the virtual wave signal in a hybrid composite laminate via the method of images. For provoking local material damage, the hybrid composite sample is subjected to a defined impact loading. The results obtained from photothermal defect imaging, utilizing rectangular laser pulse excitation, are compared with results obtained from 3D x-ray computed tomography. To sum up, we demonstrate a fast, non-invasive, and easily interpretable reconstruction of defects within macroscopic hybrid composite laminates based on the virtual wave concept.

Funder

Austrian Research Funding Association

Publisher

AIP Publishing

Link

https://pubs.aip.org/aip/jap/article-pdf/doi/10.1063/5.0188449/19831343/074903_1_5.0188449.pdf

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