Numerical Analysis of Asymmetrically Bonded Composite Patch Repair and Effect of In-Plane Skewed Crack Front on the SIF
| Autor: | Bachir Bouiedjra Belabbess, Benhamena Ali, Abdelkader Djebli, Aid Abdelkarim, Baltach Abdelghani |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
business.industry Numerical analysis Crack tip opening displacement Front (oceanography) Skew 02 engineering and technology Mechanics Structural engineering 021001 nanoscience & nanotechnology Crack growth resistance curve Finite element method Crack closure 020303 mechanical engineering & transports 0203 mechanical engineering 0210 nano-technology business Stress intensity factor |
| Zdroj: | International Journal of Engineering Research in Africa. 30:11-22 |
| ISSN: | 1663-4144 |
| Popis: | A nonlinear 3-D finite element analysis was conducted to analyze the crack front behavior of a center cracked aluminum plate, asymmetrically repaired with composite patch. According to experimental observations, the crack front was modeled as an inclined shape from the initial state where the crack front is straight and parallel to the thickness direction from the patched side toward the un-patched side. The skew degree is found to strongly influence the stress intensity factor (SIF) distribution along the crack front. In effect, the obtained trends of the SIF’s distribution are different and changes during crack growth stages. The main finding is that regardless the crack front shape (inclination), the average stress intensity factor through the crack front remains constant and consequently, it means to be an effective parameter to estimate the fatigue life and crack growth of the asymmetrically patched structures. The performed models gave good results compared to the literature and the different findings correlate well with the experimental observations and make sense with a realistic crack development. |
| Databáze: | OpenAIRE |
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