Effects of the initial adhesive disbonding on patch repaired composites

The adhesive layer plays an important role on the stress and deformation transfer between composite patch and parent plate in a repaired structure. In this paper, based on the nonlinear material properties and continuum damage mechanics, the three-dimensional progressive damage model of the repaired...

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Bibliographic Details
Published in:Journal of the Brazilian Society of Mechanical Sciences and Engineering 2018-04, Vol.40 (4), p.1-9, Article 225
Main Authors: Tie, Ying, Xu, Ping, Li, Cheng, Tian, Zhi-zong
Format: Article
Language:English
Subjects:
Adhesives
Continuum damage mechanics
Damage assessment
Deformation
Engineering
Failure load
Mechanical Engineering
Plates (structural members)
Property damage
Technical Paper
Three dimensional models
Ultimate tensile strength
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Summary:The adhesive layer plays an important role on the stress and deformation transfer between composite patch and parent plate in a repaired structure. In this paper, based on the nonlinear material properties and continuum damage mechanics, the three-dimensional progressive damage model of the repaired specimen has been built to investigate the effect of initial adhesive disbonding on the ultimate strength and the damage state. The results indicate that the initial adhesive disbonding does not change the final failure mode, but results in the decrease of the final failure load. The decreasing amount of final failure load for the repaired specimen with four-layer patch is larger than that for the repaired specimen with two-layer patch.
ISSN:1678-5878
1806-3691
DOI:10.1007/s40430-018-1149-x