2007
DOI: 10.1088/0964-1726/17/01/015017
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Finite element analysis of the piezoelectric-based repair of a delaminated beam

Abstract: This paper provides the methodology on the use of piezoelectric patches for the repair of delaminated beams subjected to static loading, considering moment equilibrium. The singularity of the shear stresses induced at the crack tip of the delamination in the beam may result in sliding mode fracture, and a method to erase this singularity via piezoelectric materials is developed. An index defined to measure the effectiveness of repair is proposed. To facilitate design of the repair, a numerical solution obtaine… Show more

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Cited by 23 publications
(21 citation statements)
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“…The study on the efficacy of repairing delaminated beams using the Finite Element Method (FEM) was done by Duan et al [50]. The authors carried out the work with the intent of understanding the physical phenomena underlying the piezoelectric patch repair.…”
Section: Active Repair Of Composite Structuresmentioning
confidence: 99%
“…The study on the efficacy of repairing delaminated beams using the Finite Element Method (FEM) was done by Duan et al [50]. The authors carried out the work with the intent of understanding the physical phenomena underlying the piezoelectric patch repair.…”
Section: Active Repair Of Composite Structuresmentioning
confidence: 99%
“…Piezoelectric patches are also much lighter than conventional materials and create less concentrated stress on the damaged structure. Pioneering researches on repair of damaged steel structures by use of piezoelectric patches were conducted by Wang et al [ 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 ]. The concept was also extended to the repair of reinforced concrete beams [ 59 , 60 ], damaged structures with a moving mass [ 61 ], and analyzed by analytical fracture mechanics [ 62 ] and boundary element methods [ 63 ].…”
Section: Piezoelectric Materials and Applicationsmentioning
confidence: 99%
“…Wang et al [ 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 ] developed models to study the use of piezoelectric materials in structural repair, including mechanical models for the repair of cracked or delaminated beam or plate structures under a variety of load conditions. The placement and size of the piezoelectric layer to provide an optimal voltage design with respect to minimizing/removing the stress singularity at the tip of cracks and delaminations were also investigated.…”
Section: Repair Of Structures With Smart Materialsmentioning
confidence: 99%
“…The repair in active mode is observed better than the repair in passive. A model is developed to analyse the stress singularity at the crack tip of delamination in the composite beam subjected to static loading and presented through the finite element analysis using the ABAQUS (Duan et al, 2007). Piezoelectric material can be used as an active patch to diminish stress close to the crack tip of a notched beam under dynamic loading (Wang et al, 2004).…”
Section: Introductionmentioning
confidence: 99%