Effects of the adhesive disband on the performances of bonded composite repairs in aircraft structures |
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| Affiliation: | 1. LMPM, Department of Mechanical Engineering, University of Sidi Bel Abbes, BP 89, Cité Ben M’hidi, Sidi Bel Abbes 22000, Algeria;2. Mechanical Engineering Department, College of Engineering, King Saud University, Riyadh, Saudi Arabia;3. Department of Mechanical Engineering, University of Relizane, Relizane, Algeria;1. Instituto de Física Corpuscular (IFIC), Centro Mixto CSIC-Universidad de Valencia, Institutos de Investigación de Paterna, Aptd. 22085, E-46071 Valencia, Spain;2. School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China;3. Research Center for Hadron and CSR Physics, Lanzhou University and Institute of Modern Physics of CAS, Lanzhou 730000, China;1. School of Mechanical and Aerospace Engineering, Gyeongsang National University, Jinju, Gyeongnam 52828, Republic of Korea;2. Research Center for Aircraft Core Technology, Gyeongsang National University, Jinju, Gyeongnam 52828, Republic of Korea;1. Department of Civil and Environmental Engineering, University of Delaware, USA;2. Department of Mechanical Engineering, University of Delaware, USA;3. Department of Materials Science and Engineering, University of Delaware, USA;4. Department of Civil and Environmental Engineering, Portland State University, USA;5. Center for Composite Materials, University of Delaware, USA |
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| Abstract: | In this study, the effects of the adhesive disband on the efficiency of bonded composites repair in aircraft structures were analyzed. The three-dimensional finite element method was used to achieve the objectives of the study. The stress intensity factor at the crack tip was chosen as fracture criteria. The analysis was extended to the single and double symmetric bonded composite patches. The obtained results show that the repair efficiency is negatively influenced if the adhesive disband growths perpendicularly to the crack. In the case of double symmetric patch, the presence of double adhesive disband highly decreases the repair efficiency and increases the risk of adhesion failure between the composite patch and the cracked aluminum structures. |
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