Abstract
In the present study, the experimental investigation of the repair of the Al 2024 T3 plate with edge and center crack by Carbon fiber-reinforced polymer (CFRP) patch under tensile loading is carried out. The present work is carried out in two parts. In the first part, the fracture analysis of isotropic and CFRP plates with edge crack under tensile loading is carried out. Where the comparative study of Al plate and CFRP [Unidirectional (UD) and Bidirectional (BD)] is presented for the selection of proper patching material. In the second part, the repair of the cracked isotropic plate by BD CFRP patch is presented. In this present work, it is observed that CFRP (BD) patch is suitable for the crack repair of the Al plate. The crack growth does not take place from the initially generated crack in the repaired plate under tensile loading and the maximum peak load in the edge and center cracked repaired plate is increased by 26% and 16% respectively as compared to the unrepaired plate.
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Abbreviations
- \(u_{i}\) :
-
Conventional degrees of freedom (DOF)
- \(a\) :
-
Extra DOF for crack face
- \(b_{i}^{\alpha }\) :
-
Extra DOF for crack face
- \(\Omega\) :
-
Area of arbitrary area
- \(\Gamma\) :
-
Outer boundary
- \(m\) :
-
Nodes of FEM
- \(m_{C}\) :
-
Crack face enrichment
- \(m_{t}\) :
-
Crack tip enrichment
- \(H_{f}\) :
-
Heaviside function
- \(\Phi_{f}\) :
-
Branch enrichment function
- \(K_{E}\) :
-
Global stiffness matrix
- \(f_{E}\) :
-
Global force vector
- \({\mathbb{C}}\) :
-
Constitutive matrix
- \(\nu\) :
-
Poisson’s ratio
- \(K_{I}\) :
-
First mode SIF
- \(K_{II}\) :
-
Second mode SIF
- \(J\) :
-
J-Integral
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Mishra, K., Lal, A. & Sutaria, B.M. Experimental Investigation of Repair of Plate with Edge and Center Crack by Surface Bounded Composite Patch. Int J Steel Struct 23, 534–547 (2023). https://doi.org/10.1007/s13296-023-00710-w
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DOI: https://doi.org/10.1007/s13296-023-00710-w