Numerical model for optimal design of composite patch repair of cracked aluminum plates under tension
Source abstract
Abstract
Abstract In the present work, a numerical model for the optimization of composite patch repair of aluminum plate containing a central crack is developed. The patch is bonded over a cracked aluminum sheet using a small adhesive layer placed in between. The developed model allows us to predict the patch effect on the behavior of the cracked plate under tensile loading and its consequence on the integrity of the structure. To achieve this goal, a finite element model is developed to determine the evolution of the stress intensity factor at the crack tip. After model validation and parametric study, the optimization of the patch volume is formulated and solved by two zero-order and first-order methods. By considering the design variables as the patch height, width and thickness, in addition to adhesive thickness, large reduction of patch material volume can be achieved by applying the developed model. The sensitivity of optimal patch parameters is investigated under various crack lengths. Several stacking sequences and material properties are also considered to reduce the stress concentration in the vicinity of the crack tip, leading to strong volume reduction.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Mechanical Behavior of Composites · Metal Forming Simulation Techniques · Numerical methods in engineering
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (30)
Show source-provided references
1. Experimental and numerical study of the fatigue behaviour of composite patch reinforced cracked steel plates
2. Duong · 2007
3. Baker · 2002 · vols. 1 and 2
4. Development of a proof test for through-life monitoring of bond integrity in adhesively bonded repairs to aircraft structure10.1016/j.ijadhadh.2012.03.004 ↗
5. 3-D modelling of cyclically loaded composite patch repair of a cracked plate10.1016/j.compstruct.2005.11.010 ↗
6. Crack reinforcement by distributed springs10.1016/0022-5096(87)90044-5 ↗
7. Bonded repair of cracks under mixed mode loading10.1016/S0020-7683(97)00240-0 ↗
8. A closed-form solution for the thermal stress distribution in rectangular metal/composite bonded joints10.1016/j.ijadhadh.2008.10.004 ↗
9. Initiation and progression of composite patch debonding in adhesively repaired cracked metallic sheets10.1016/j.compstruct.2006.08.022 ↗
10. Design, analysis and performance of adhesively bonded composite patch repair of cracked aluminum aircraft panels10.1016/j.compstruct.2005.02.023 ↗
11. An experimental study on the Charpy impact response of cracked aluminum plates repaired with GFRP or CFRP composite patches10.1016/j.compstruct.2008.07.032 ↗
12. Finite element-based three-dimensional stress analysis of composite bonded repairs to metallic aircraft structure10.1016/j.ijadhadh.2005.03.016 ↗
13. Computation of stress intensity factors (KI, KII) and T-stress for cracks reinforced by composite patching10.1016/j.compstruct.2005.11.024 ↗
14. Analysis of cracked aluminum plates with one-sided patch repair using p-convergent layered model »10.1016/j.finel.2010.01.008 ↗
15. Reddy · 2003
16. Fatigue and fracture analysis of aluminum plate with composite patches under the hydrothermal effect10.1016/j.compstruct.2010.03.015 ↗
17. Computational analysis and optimization for smart patching repairs10.1023/A:1023916304551 ↗
18. Applying a genetic algorithm to the optimization of composite patches10.1016/j.compstruc.2005.12.004 ↗
19. Patch repair design optimization for fracture and fatigue improvements of cracked plate10.1016/j.ijsolstr.2006.06.006 ↗
20. Optimization of composite patches repairs with the design of experiments method10.1016/j.matdes.2008.04.049 ↗
21. Progressive damage modelling of bonded composite repairs10.1016/j.tafmec.2005.01.004 ↗
22. Sih · 1973
23. Optimum design of symmetric composite patch repair to centre cracked metallic sheet10.1016/S0263-8223(00)00005-2 ↗
24. Design of structure optimization with APDL
25. ANSYS. User manual, version 12. Canonsburg, PA, USA.
26. Irisarri FX. Stratégies de calcul pour l'optimisation multi objectif des structures composites [these de doctorat]. Université Sabatier Toulouse and ONERA Chatillon; 2008.
27. Chen HC, Yeh MK. Optimum structural design of composite xylophone bars. In: Proceedings of the 16th international conference on composite materials; 2007.
28. Uncertainties of unidirectional composite strength under tensile loading and variation of environmental condition10.1016/j.tafmec.2011.11.005 ↗
29. Comparison of symmetrical double sided and stepped patches for repairing cracked metallic structures10.1016/j.compstruct.2007.11.003 ↗
30. Cohesive zone model for the prediction of interfacial shear stresses in a composite-plate RC beam with an intermediate flexural crack10.1016/j.compstruct.2012.05.027 ↗