A laser ultrasonic method is proposed for the nondestructive evaluation (NDE) of structural adhesive bonding. Zero-group-velocity (ZGV) resonances were generated and detected in five trilayer assemblies composed of two asymmetric aluminum alloy plates bonded with an epoxy adhesive. Cohesive and adhesive defects were introduced to degrade the practical adhesion. The attenuation of the temporal signal of ZGV resonances was found to provide sufficient information to discriminate between strong and weak bonding. Two metrics characterizing the attenuation were identified, which allow us to quantitatively evaluate the differences between the manufactured samples. A 2D scan of a trilayer assembly with different bond defects demonstrates the imaging capability of this all-optical NDE method.
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9 March 2020
Research Article|
March 09 2020
Nondestructive evaluation of structural adhesive bonding using the attenuation of zero-group-velocity Lamb modes
R. Hodé
;
R. Hodé
a)
1
Laboratoire d'Acoustique de l'Université du Mans, LAUM–UMR 6613 CNRS, Le Mans Université
, Avenue O. Messiaen, 72085 Le Mans Cedex 9, France
2
Safran Tech, Rue des Jeunes Bois, Châteaufort
, 78772 Magny-les-Hameaux, France
a)Author to whom correspondence should be addressed: [email protected]
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S. Raetz
;
S. Raetz
b)
1
Laboratoire d'Acoustique de l'Université du Mans, LAUM–UMR 6613 CNRS, Le Mans Université
, Avenue O. Messiaen, 72085 Le Mans Cedex 9, France
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J. Blondeau;
J. Blondeau
1
Laboratoire d'Acoustique de l'Université du Mans, LAUM–UMR 6613 CNRS, Le Mans Université
, Avenue O. Messiaen, 72085 Le Mans Cedex 9, France
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N. Chigarev;
N. Chigarev
1
Laboratoire d'Acoustique de l'Université du Mans, LAUM–UMR 6613 CNRS, Le Mans Université
, Avenue O. Messiaen, 72085 Le Mans Cedex 9, France
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N. Cuvillier
;
N. Cuvillier
2
Safran Tech, Rue des Jeunes Bois, Châteaufort
, 78772 Magny-les-Hameaux, France
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V. Tournat
;
V. Tournat
1
Laboratoire d'Acoustique de l'Université du Mans, LAUM–UMR 6613 CNRS, Le Mans Université
, Avenue O. Messiaen, 72085 Le Mans Cedex 9, France
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M. Ducousso
M. Ducousso
c)
2
Safran Tech, Rue des Jeunes Bois, Châteaufort
, 78772 Magny-les-Hameaux, France
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a)Author to whom correspondence should be addressed: [email protected]
b)
Electronic mail: [email protected]
c)
Electronic mail: [email protected]
Appl. Phys. Lett. 116, 104101 (2020)
Article history
Received:
December 20 2019
Accepted:
February 25 2020
Citation
R. Hodé, S. Raetz, J. Blondeau, N. Chigarev, N. Cuvillier, V. Tournat, M. Ducousso; Nondestructive evaluation of structural adhesive bonding using the attenuation of zero-group-velocity Lamb modes. Appl. Phys. Lett. 9 March 2020; 116 (10): 104101. https://doi.org/10.1063/1.5143215
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