NDT thermographic techniques on CFRP structural components for aeronautical application
| Autor: | Francesco W. Panella, A. Saponaro, V. Dattoma, Riccardo Nobile |
|---|---|
| Přispěvatelé: | Dario Amodio, Nicola Bonora, Gabriele Arcidiacono, Luigi Bruno, Francesco Frendo, Giuseppe Mirone, Francesco Iacoviello, Dattoma, V., Nobile, R., Panella, F. W., Saponaro, Andrea |
| Rok vydání: | 2018 |
| Předmět: |
Materials science
business.industry Acoustics Phase (waves) 02 engineering and technology 021001 nanoscience & nanotechnology Characterization (materials science) Ultrasonic analysis 020303 mechanical engineering & transports 0203 mechanical engineering Nondestructive testing Thermography NDT pulsed thermography thermal contrast real defects CFRP aeronautical components Transient (oscillation) 0210 nano-technology business Heating time Reliability (statistics) Earth-Surface Processes |
| Zdroj: | Procedia Structural Integrity. 8:452-461 |
| ISSN: | 2452-3216 |
| DOI: | 10.1016/j.prostr.2017.12.045 |
| Popis: | This paper describes the application of active pulsed Thermography (PT) as a Non-Destructive Test (NDT) method for the investigation of CFRP aeronautical components. The analyzed specimens include T-shaped stringers, previously monitored by ultrasonic analysis, and laminated flat plates with internal production defects. Several set-up tests allowed to identify optimal configurations for the defect detection, according to specimen geometry and defect location. A custom post-processing algorithm has been developed to improve thermographic data for more precise defect characterization, whilst a successive full-field contrast mapping allows to achieve a reliable defect distribution map and a better definition on larger areas. Detection of defects was studied with a specific thermal contrast evaluation, with a suitable choice of undamaged reference area during the transient cooling phase. The influence of heating time and experimental set-up on the thermal contrast results has also been studied; moreover, the ability of thermographic technique to detect real small production defects with accuracy and reliability is verified for CFRP aeronautical components. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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