With the rapid application of the composite structure in the aerospace industry, more load-bearing structures and
components are used with composites instead of conventional engineering materials. However, the composite structures
are inevitably suffered damages in the complex environment, the composites structures repair become more important in
the airplane maintenance. This paper describes the composites patch repair progress. Firstly, the flaws and damages
concerned to composite structures are concluded, and also the repair principles are presented. Secondly, the advantages
and disadvantages for different repair methods are analyzed, as well as the different bonded repair and their applicability
to different structures is discussed. According the recent research in theory and experiment, the scarf repair effects under
different parameters are analyzed. Finally, the failure mechanisms of repair structure are discussed, and some prospects
are put forward.
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