In situ analysis of interfacial damage in adhesively bonded composite joints subjected to various surface pretreatments
KAUST DepartmentComposite and Heterogeneous Material Analysis and Simulation Laboratory (COHMAS)
Mechanical Engineering Program
Physical Science and Engineering (PSE) Division
KAUST Grant NumberOSR-2017-CRG6-3388.01
Online Publication Date2018-10-25
Print Publication Date2019-01
Permanent link to this recordhttp://hdl.handle.net/10754/630617
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AbstractSecondary bonding of carbon fiber-reinforced polymer (CFRP) using structural adhesives is a promising technology. However, the joint performance can be ultimately affected by surface modifications attained through different surface preparation strategies. Thus, there is still a need for experimental techniques capable of assessing the mechanical properties associated with different surface preparations, and their relation to the damage morphology at initiation. In this work, a refined experimental set-up was used to perform three-point bending tests on miniaturized single-lap composite joints. Such testing configuration features a peel-dominant stress field within the bondline and the possibility to track the evolution of adhesive deformation and damage in situ at the meso-scale using optical microscopy. Epoxy-bonded CFRP joints were evaluated as a function of various surface pretreatments. In situ local observation obtained during mechanical loading provided insights into the detailed mechanisms taking place depending on the surface preparation strategies.
CitationTao R, Alfano M, Lubineau G (2019) In situ analysis of interfacial damage in adhesively bonded composite joints subjected to various surface pretreatments. Composites Part A: Applied Science and Manufacturing 116: 216–223. Available: http://dx.doi.org/10.1016/j.compositesa.2018.10.033.
SponsorsThe research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under award number OSR-2017-CRG6-3388.01.