Study of multiple cracks repair by collage of composite patches

Study of multiple cracks repair by collage of composite patches

Yamina Chelahi Chikr

Laboratoire de mécanique physique des matériaux (LMPM), Université Djillali Liabes, cité Ben M’Hidi, BP 89, Sidi Bel Abbès, Algérie

Corresponding Author Email: 
ychelahi@yahoo.com
Page: 
301-318
|
DOI: 
https://doi.org/10.3166/rcma.2017.00025
Received: 
| |
Accepted: 
| | Citation

ACCESS

Abstract: 

Using the finite element method, the present study deals first, with the behavior of a cracked structure repaired and not repaired by a patch, then the interaction effect between two surface cracks moving in opposite directions. The stress intensity factors (SIFs) and adhesive stresses will be estimated; the transverse and longitudinal displacements of a crack for an invariable length will be studied, as well as the effect of a crack oriented on a plane inclined with respect to the main crack. The results obtained clearly indicate that the interaction effect is decisive when these cracks are very close to each other. In this case, the distribution of shear stresses in the adhesive layer along the virtual line is also analyzed using the finite element method.

Keywords: 

finite elements, cracks, displacements, interaction, stress intensity factors (SIFs), adhesive stresses

1. Introduction
2. Présentation du logiciel
3. Résultats et discussions
4. Interaction entre deux fissures de longueur fixes
5. Déplacement horizontal de la fissure (b) par rapport à la fissure (a)
6. Déplacement vertical de la fissure (b) par rapport à la fissure (a)
7. Déplacement incliné de la fissure (b) par rapport à la fissure (a)
8. Analyse et résultats
9. Analyse des contraintes de cisaillements dans la couche adhésive
10. Conclusion générale
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