scholarly journals Bonded Composite Patch Repairs on Cracked Aluminum Plates: Theory, Modeling and Experiments

10.5772/16227 ◽  
2011 ◽  
Author(s):  
Fabrizio Ricci ◽  
Francesco Franco ◽  
Nicola Montefusco
Keyword(s):  
Composite Patch ◽  
Bonded Composite ◽  
Patch Repairs ◽  
Modeling And Experiments ◽  
Aluminum Plates

Debonding of adhesively bonded composite patch repairs of cracked steel members

2011 ◽  
Vol 42 (5) ◽  
pp. 1262-1270 ◽  
Author(s):  
E.S. Aggelopoulos ◽  
T.D. Righiniotis ◽  
M.K. Chryssanthopoulos
Keyword(s):  
Adhesively Bonded ◽  
Composite Patch ◽  
Steel Members ◽  
Bonded Composite ◽  
Patch Repairs

scholarly journals Elastoplastic analysis of cracked Aluminum plates with a hybrid repair technique using the bonded composite patch and drilling hole in opening mode I

2020 ◽  
Vol 14 (52) ◽  
pp. 256-268
Author(s):  
Wahiba Nessrine Bouzitouna ◽  
Wahid Oudad ◽  
Mohamed Belhamiani ◽  
Djamel Eddine Belhadri ◽  
Leila Zouambi
Keyword(s):  
Elastoplastic Analysis ◽  
Mode I ◽  
Composite Patch ◽  
Repair Technique ◽  
Drilling Hole ◽  
Opening Mode ◽  
Bonded Composite ◽  
Hybrid Repair ◽  
Aluminum Plates

scholarly journals Fatigue Life Improvement of Cracked Aluminum 6061-T6 Plates Repaired by Composite Patches

Materials ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1421
Author(s):  
Armin Yousefi ◽  
Saman Jolaiy ◽  
Reza Hedayati ◽  
Ahmad Serjouei ◽  
Mahdi Bodaghi
Keyword(s):  
Fatigue Life ◽  
Fatigue Behavior ◽  
Weight Ratio ◽  
High Strength ◽  
Plastic Strain Amplitude ◽  
Composite Patch ◽  
Life Improvement ◽  
Cracked Structures ◽  
Aluminum Plates ◽  
High Flexibility

Bonded patches are widely used in several industry sectors for repairing damaged plates, cracks in metallic structures, and reinforcement of damaged structures. Composite patches have optimal properties such as high strength-to-weight ratio, easiness in being applied, and high flexibility. Due to recent rapid growth in the aerospace industry, analyses of adhesively bonded patches applicable to repairing cracked structures have become of great significance. In the present study, the fatigue behavior of the aluminum alloy, repaired by a double-sided glass/epoxy composite patch, is studied numerically. More specifically, the effect of applying a double-sided composite patch on the fatigue life improvement of a damaged aluminum 6061-T6 is analyzed. 3D finite element numerical modeling is performed to analyze the fatigue performance of both repaired and unrepaired aluminum plates using the Abaqus package. To determine the fatigue life of the aluminum 6061-T6 plate, first, the hysteresis loop is determined, and afterward, the plastic strain amplitude is calculated. Finally, by using the Coffin-Manson equation, fatigue life is predicted and validated against the available experimental data from the literature. Results reveal that composite patches increase the fatigue life of cracked structures significantly, ranging from 55% to 100% for different applied stresses.

Development of smart bonded composite patch repair solution

2020 ◽  
Author(s):  
Florian Lambinet ◽  
Zahra Sharif Khodaei
Keyword(s):  
Patch Repair ◽  
Composite Patch ◽  
Bonded Composite

General Method for Optimizing Composite Patch Repairs

2015 ◽  
Vol 1120-1121 ◽  
pp. 670-674
Author(s):  
Abdelmadjid Ait Yala ◽  
Abderrahmanne Akkouche
Keyword(s):  
Mechanical Properties ◽  
Stress Intensity Factor ◽  
Stress Intensity ◽  
Intensity Factor ◽  
Optimization Problem ◽  
Composite Patch ◽  
Matlab Program ◽  
Patch Repairs ◽  
Selection Of ◽  
General Method

The aim of this work is to define a general method for the optimization of composite patch repairing. Fracture mechanics theory shows that the stress intensity factor tends towards an asymptotic limit K∞.This limit is given by Rose’s formula and is a function of the thicknesses and mechanical properties of the cracked plate, the composite patch and the adhesive. The proposed approach consists in considering this limit as an objective function that needs to be minimized. In deed lowering this asymptote will reduce the values of the stress intensity factor hence optimize the repair. However to be effective this robust design must satisfy the stiffness ratio criteria. The resolution of this double objective optimization problem with Matlab program allowed us determine the appropriate geometric and mechanical properties that allow the optimum design; that is the selection of the adhesive, the patch and their respective thicknesses.

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