This paper presents a quick repair method for composite structures mainly developed for
aircraft. Existing repair methods use uncured prepreg for repair patches and it takes a long time to
form and cure the repair patches. The developed method uses pre-cured thin repair patches
between which glue is applied. To perform repairs, these patches are formed to fit the area to be
repaired, attached to the area and are then pressurized under atmospheric pressure. Next, the glue
is heated and cured using a heater mat. For verification of the feasibility of the developed method,
a bonding quality confirmation test, an inspectability confirmation test and a strength test were
implemented and the validity of the developed method was confirmed. This technology reduces the
repair time of a composite structure by approximately 70% in comparison to existing methods, and
therefore allows damaged aircraft to return to operation more quickly.
