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Flying Laser Spot Thermography technique for the NDE of Fibre Metal Laminates disbonds
- Publication Year :
- 2017
- Publisher :
- Elsevier Ltd, 2017.
-
Abstract
- The present work investigates the features of an active Infrared-NDT Thermography technique derived from a Flying Laser Spot set-up for the analysis of interlaminar disbonds in layered structures in general and Fibre Metal Laminates in particular. The presented technique uses a laser-spot heat source, which moves at a constant speed, raster scanning the object surface. Interlaminar defects parallel to the surfaces act as barriers towards through-the-thickness heat diffusion. This produces some modifications over the surface thermal field which are well identified in the Standard Deviation calculated over a Reference Area following the heat source. The mechanisms leading to such defect signature are investigated in this work by means of Finite Element Analyses which model the dynamic thermal problem on a GLARE sample with triangular disbond defects at inner interfaces. An extended number of parameters is changed to study their influence on the defect signature, and the FEA analysis is also compared to an analytical and an experimental case studies for further validation.
- Subjects :
- Work (thermodynamics)
Materials science
Non-destructive testing
Laser
Ceramics and Composite
02 engineering and technology
01 natural sciences
law.invention
Settore ING-IND/14 - Progettazione Meccanica E Costruzione Di Macchine
Layered structure
law
Nondestructive testing
0103 physical sciences
Thermal
Finite Element Analysis (FEA)
Composite material
Civil and Structural Engineering
010302 applied physics
business.industry
Delamination
021001 nanoscience & nanotechnology
Finite element method
IR thermography
Ceramics and Composites
Heat equation
0210 nano-technology
Raster scan
business
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....ad7a30a4569403ec59a74bf604ecd4a9