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http://dx.doi.org/10.12989/sem.2016.58.2.301

New optimization method of patch shape to improve the effectiveness of cracked plates repair  

Bouchiba, Mohamed S. (Department of Mechanical Engineering, University of Sidi Bel Abbes)
Serier, Boualem (Department of Mechanical Engineering, University of Sidi Bel Abbes)
Publication Information
Structural Engineering and Mechanics / v.58, no.2, 2016 , pp. 301-326 More about this Journal
Abstract
An optimization method of patch shape was developed in this study, in order to improve repair of cracked plates. It aimed to minimize three objectives: stress intensity factor, patch volume and shear stresses in the adhesive film. The choice of these objectives ensures improving crack repair, gaining mass and enhancing the adhesion durability between the fractured plate and the composite patch. This was a multi-objective optimization combined with Finite elements calculations to find out the best distribution of patch height with respect to its width. The implementation of the method identified families of optimal shapes with specific geometric features around the crack tip and at the horizontal end of the patch. Considerable mass gain was achieved while improving the repair efficiency and keeping the adhesive shear stress at low levels.
Keywords
patch repair; stress intensity factor; adhesive shear; finite elements method; shape optimization;
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Times Cited By KSCI : 2  (Citation Analysis)
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