Abstract
Due to recent advances in automated fibre placement (AFP) methods there is a demand for non-destructive evaluation of fibres during structural fabrication. A thermal wave imaging technique is proposed for the evaluation of defects in the AFP process, such as misaligned fibres, debonding between layers and broken fibres. The method focuses on the evaluation of thermal images taken with infrared cameras during the AFP fibre placement procedure. Thermal wave imaging determines defects/damages by assessing the uniformity of heat dissipating through materials. This work looks at the potential of such a system to accurately map the AFP process one layer at a time and build a three-dimensional defect/damage analysis of the final structure, which would provide potential for automated algorithms to locate areas of misaligned fibres, layer debonding or fibre breaks. Defects were evaluated by capturing thermal images in real-time after fibre placement, this was done by evaluating a simulated AFP process, by adding additional layers to a test sample. By parametrically assessing any changes in results between successively captured areas and layers it was possible to identify defects. An X-Y gantry system was used to provide evidence for the concept in terms of real-time adaptability within the production process of structures, yielding layer by layer information of the built structure, while also providing information about part to part repeatability of the process.
Original language | English |
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Title of host publication | Structural Health Monitoring 2019, Volume 2 |
Subtitle of host publication | Enabling Intelligent Life-Cycle Health Management for Industry Internet of Things (IIOT) - Proceedings of the 12th International Workshop on Structural Health Monitoring |
Editors | Fu-Kuo Chang, Alfredo Guemes, Fotis Kopsaftopoulos |
Publisher | DEStech Publications Inc. |
Pages | 2294-2301 |
Number of pages | 8 |
ISBN (Electronic) | 9781605956015 |
Publication status | Published - 1 Nov 2019 |
Event | 12th International Workshop on Structural Health Monitoring: Enabling Intelligent Life-Cycle Health Management for Industry Internet of Things (IIOT), IWSHM 2019 - Stanford, USA United States Duration: 10 Sept 2019 → 12 Sept 2019 |
Conference
Conference | 12th International Workshop on Structural Health Monitoring: Enabling Intelligent Life-Cycle Health Management for Industry Internet of Things (IIOT), IWSHM 2019 |
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Country/Territory | USA United States |
City | Stanford |
Period | 10/09/19 → 12/09/19 |
ASJC Scopus subject areas
- Computer Science Applications
- Health Information Management