0000000000142739

AUTHOR

Pengcheng Cheng

showing 2 related works from this author

Design and optimization of bonded patch repairs of laminated composite structures

2015

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 paramete…

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 quantity
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Tensile behaviour of patch-repaired CFRP laminates

2011

The present study examines the tensile behaviour of composite structures repaired by bonding external patches. Various patches of different stacking sequences placed on both sides of the parent plate were considered. Damage development and the failure process of the repaired plates were analyzed and a parent plate fracture model has been proposed. Optimised patch repairs were calculated by finite element modelling. It was found that high stress concentration along the longitudinal edges of circular patches and/or at the transverse edges of the hole leads to early damage initiation in the parent plate. However, the position of damage initiation and the process of damage progression depend pa…

Materials sciencebusiness.industryeducationComposite numberPlate fracture02 engineering and technologyStructural engineering[PHYS.MECA.MSMECA]Physics [physics]/Mechanics [physics]/Materials and structures in mechanics [physics.class-ph]021001 nanoscience & nanotechnologyFinite element methodHigh stressTransverse plane020303 mechanical engineering & transports0203 mechanical engineeringUltimate tensile strengthCeramics and CompositesComposite material0210 nano-technologybusinessCivil and Structural EngineeringComposite Structures
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