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ACCURACY OF 3D THERMO-TOMOGRAPHY MODEL FOR THE EVALUATION OF AEROSPACE COMPONENTS

Frommel, Christoph and Dutta, Somen and Kupke, Michael and Schuster, Alfons and Drechsler, Klaus (2019) ACCURACY OF 3D THERMO-TOMOGRAPHY MODEL FOR THE EVALUATION OF AEROSPACE COMPONENTS. In: Proceedings ICCM 2019. 22nd International Conference on Composite Materials 2019, 11.-16. August 2019, Melbourne, Australien.

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Abstract

Slowly but surely, more and more automated thermography measurement is being applied in industry. Thermography provides a high sensitivity for most defects, high accuracy in locating defects and mostly used in reflection mode, which is important for complex and large aerospace components. Furthermore, due to focal plane array detector, a large area can be measured comparatively in much less time than ultrasound inspection. By measuring components (< 6 mm thickness) with thermography the load of water coupled ultrasonic machine can be relieved. Recently, for the first time FACC [2] has qualified thermography inspection method for CFRP components and has reduced the inspection time up to 50 %, although measurement is conducted manually. Already in 2012 [1] , DLR Augsburg carried out the automated thermography measurement of an aircraft structure and published the results. Since then, both the automated measurement process and the evaluation process have been continuously improved. To reduce the evaluation process time by means of 3D visualisation model for a large number of 2D thermography images, 2 independent methods [3] are developed at DLR. A further development of the evaluation process for both methods occurred first by generating a 3Dthermo-tomography model [4] (Measurement results according to their thermal depth). The defect analysis with this generated model takes place directly in the CAD environment. Along with their development phase accuracy of system components for two methods were analysed [5] within the scope of those respective test series. Moreover, experiments were performed for complete evaluation (the absolute and relative system accuracy between two methods), and 3D thermography models were generated with both methods to analyse visualisation accuracy of 3D model in CAD environment. The results are discussed in this paper.

Item URL in elib:https://elib.dlr.de/131469/
Document Type:Conference or Workshop Item (Speech)
Additional Information:Vortrag auf Konferenz
Title:ACCURACY OF 3D THERMO-TOMOGRAPHY MODEL FOR THE EVALUATION OF AEROSPACE COMPONENTS
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Frommel, ChristophChristoph.Frommel (at) dlr.dehttps://orcid.org/0000-0002-3717-1087
Dutta, Somensomen.dutta (at) dlr.deUNSPECIFIED
Kupke, Michaelmichael.kupke (at) dlr.deUNSPECIFIED
Schuster, AlfonsAlfons.Schuster (at) dlr.dehttps://orcid.org/0000-0002-7444-366X
Drechsler, KlausTU MünchenUNSPECIFIED
Date:August 2019
Journal or Publication Title:Proceedings ICCM 2019
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:3D Thermography, CFRP, NDT, Automation, Robot
Event Title:22nd International Conference on Composite Materials 2019
Event Location:Melbourne, Australien
Event Type:international Conference
Event Dates:11.-16. August 2019
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Structures and Materials (old)
Location: Augsburg
Institutes and Institutions:Institute of Structures and Design
Deposited By: Frommel, Christoph
Deposited On:28 Nov 2019 11:38
Last Modified:28 Nov 2019 11:38

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