6533b7d1fe1ef96bd125c32b
RESEARCH PRODUCT
Design and optimization of bonded patch repairs of laminated composite structures
Shahram AivazzadehXiaojing GongXinran XiaoPengcheng Chengsubject
EngineeringDesign and optimizationComposite number02 engineering and technology0203 mechanical engineeringBonded patch repairsmedicineComposite material[SPI.MECA.GEME] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanical engineering [physics.class-ph]Civil and Structural EngineeringComposite structuresbusiness.industryPatch repairFinite element analysis (FEA)StiffnessStructural engineering021001 nanoscience & nanotechnologyFinite element methodHigh stress[SPI.MECA.GEME]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanical engineering [physics.class-ph]Transverse plane020303 mechanical engineering & transportsTensile behaviorCeramics and Compositesmedicine.symptom0210 nano-technologybusinessDimensionless quantitydescription
International audience; The present study proposes a method for design optimization of external patched repairs. The tensile behavior of notched specimens with patched repair was studied using finite element analysis and compared with experimental results. It was found that high stress concentrations along the transverse edges of circular patches and/or at the longitudinal edges of the hole leads to early damage initiation in the parent plate. The damage initiation site and its propagation depend on the patch in-plane stiffness. The optimal patch design can be characterized by a strength ratio R*. The overall design of the patch repair can be considered using a dimensionless design parameter K.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2015-05-01 |