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Capabilities of Lock-in Thermography for Non-destructive Inspection of Fibre Reinforced Composites

Ullmann, Thomas and Shi, Yuan and Aoki, Rodolfo (2012) Capabilities of Lock-in Thermography for Non-destructive Inspection of Fibre Reinforced Composites. In: Web-based Proceedings of QIRT2012. International Conference on Quantitative InfraRed Thermography - QIRT2012, 11.-14. Juni 2012, Neapel, Italien.

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Official URL: http://qirt.gel.ulaval.ca/archives/qirt2012/papers/QIRT-2012-384.pdf


Fundamental knowledge of process parameters for the manufacturing of fibre reinforced composites is essential for design and engineering of high performance lightweight structures. This concerns oxide and non-oxide fibre reinforced ceramics (CMC) as well as reinforced polymers (e.g. CFRP). The manufacturing of a layered fibre reinforced composite structure is similar to a primary shaping process and demands an efficient and consistently process monitoring to ensure sufficient quality standards. Consequently, more detailed non-destructive investigations focusing the composite’s microstructure combined with the acquired knowledge of critical manufacturing process parameters are necessary. Optically excited lock-in thermography is a qualified and proven inspection technique that provides valuable information of the composite material’s microstructure. For more sophisticated signal interpretation, the lock-in thermography measurement results are compared with other non-destructive evaluation (NDE) techniques as reference.

Item URL in elib:https://elib.dlr.de/80437/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:Capabilities of Lock-in Thermography for Non-destructive Inspection of Fibre Reinforced Composites
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Ullmann, Thomasthomas.ullmann (at) dlr.deUNSPECIFIED
Shi, Yuanyuan.shi (at) dlr.deUNSPECIFIED
Aoki, Rodolfor.aoki (at) dlr.deUNSPECIFIED
Date:11 June 2012
Journal or Publication Title:Web-based Proceedings of QIRT2012
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:lock-in thermography, carbon composites, CMC, WHIPOX, delamination, porosity, thermal diffusion length, air-coupled ultrasound, computed tomography, CT
Event Title:International Conference on Quantitative InfraRed Thermography - QIRT2012
Event Location:Neapel, Italien
Event Type:international Conference
Event Dates:11.-14. Juni 2012
Organizer:Dep. of Aerospace Engineering, University of Naples Federicio II
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Structures & Materials (old)
Location: Stuttgart
Institutes and Institutions:Institute of Structures and Design > Ceramic Composite Structures
Deposited By: Ullmann, Thomas
Deposited On:09 Apr 2013 11:01
Last Modified:31 Jul 2019 19:39

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