Non destructive evaluation of bi-material structures: a case study

Chehami, Lynda; Declercq, Nico; Lohmuller, Paul; Pomarede, Pascal; Pitrowski, Boris; Meraghni, Fodil; Ahmed Mohamed, Esam; Ez-Zahraouy, Othmane

Document type :

Direction scientifique d'une publication (ouvrage, numéro spécial de revue, proceedings): Proceedings

DOI :

10.1121/2.0000608

Title :

Non destructive evaluation of bi-material structures: a case study

Author(s) :

Chehami, Lynda [Auteur]

Transduction, Propagation et Imagerie Acoustique - IEMN [TPIA - IEMN]
Georgia Tech Lorraine [Metz]
Declercq, Nico [Auteur]
Georgia Tech Lorraine [Metz]
Lohmuller, Paul [Auteur]
Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]
Pomarede, Pascal [Auteur]
Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]
Pitrowski, Boris [Auteur]
Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]
Meraghni, Fodil [Auteur]
Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]
Ahmed Mohamed, Esam [Auteur]
Georgia Tech Lorraine [Metz]
Ez-Zahraouy, Othmane [Auteur]
Georgia Tech Lorraine [Metz]

Publication date :

2017

English keyword(s) :

Chemical compounds and components
Ultrasonics
Elasticity
Modulation spectroscopy

HAL domain(s) :

Sciences de l'ingénieur [physics]/Matériaux

English abstract : [en]

Due to their specific elastic properties (high stiffness to mass ratio), regular microstructure materials (architectural materials), are widely used in industry. This work deals with nondestructive evaluation of a 3D ...
Show more >Due to their specific elastic properties (high stiffness to mass ratio), regular microstructure materials (architectural materials), are widely used in industry. This work deals with nondestructive evaluation of a 3D bi-material structure made of an architectural ABS polymer embedded in an Epoxy resin. The difficulty of applying ultrasonic techniques to bi-material structures lies in the fact that different phenomena coexist, such as diffraction effects caused by the periodicity and the nonlinear effects caused by the adhesion properties between matrix and fibers. A combination of techniques have, therefore, been applied. For this purpose, a series of measurements in reflection mode were first employed to measure the characteristic Bragg spectrum of a healthy sample and after compressive loadings. The results show that the damage disturbs the periodicity of the structure and consequently alters the Bragg spectrum. Then the nonlinear effects, possibly due to adhesion, are investigated using cross-modulation spectroscopy technique. The transducers used were chosen according to the thickness and the periodicity scale of the sample. Based on the preliminary results, higher harmonics and sidebands increase in amplitude with increasing damage has been realized. Finally, a total difference frequency distortion parameter TDFD was introduced as a damage indicator for quantifying the damage.Show less >

Language :

Anglais

Audience :

Internationale

Collections :

Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520

Source :

Harvested from HAL

Files

2.0000608
Open access
Access the document

Non destructive evaluation of bi-material ... BibTeX CSV Excel RIS

Files

Non destructive evaluation of bi-material ...

BibTeX

CSV

Excel

RIS