Pour adhesive into injection car-
(k) Remove any resin lash, deburr, and
tridge. Attach nozzle.
clean up the repair area.
Tape over intermediate injection
Reinspect the delaminated area using
holes with lash breaker tape.
Maintain part at the speciied injec-
If no delamination exists after
repair, or delamination is within
system speciic technical manual
Attach a regulated source of com-
limits for negligible damage, rein-
pressed air to sealant gun. Set air
ish per step (m) below.
regulator for 20 psi and inject adhe-
sive, using sealant gun and nozzle,
If delamination is within edge dam-
into one hole and ill until adhesive
age rebuild limits, repair in accor-
lows of part edge and out of the
other drilled holes. The adhesive
must be allowed to low until it is
If delamination exceeds edge dam-
free of all air bubbles.
age rebuild limits, contact engi-
neering for disposition.
Remove heat lamp.
excess adhesive with clean, dry
Sand the area smooth with 180 grit
abrasive paper. Vacuum sanding
dust from repair area. Wipe with
Too much pressure using a clamping device
clean, dry wiping cloth.
may result in resin starved areas.
Apply inish system in accordance
Failure to properly cure adhesive in accor-
speciic technical manual.
dance with the speciied cure cycle will result in
reduced repair strength may not be detectable
h. Skin to Core Disbond. This repair is applicable
by visual or nondestructive inspection. This
to a disbond through which positive airlow is pos-
may result in loss of structural integrity.
sible. This would typically be used for honeycomb
core and may not apply to other core types. It is
Apply pressure using clamps, release
rapid densiication, can also be used for small skin
to core disbonds. Larger disbonds may be treated
sive to cure or set at according to the
as penetration damage and repaired in accordance
system speciic technical manual or
the manufacturer s recommended cure
cycle per engineering disposition. Heat
system speciic technical manual for damage limits.
may be applied as required using an
This repair procedure is not necessarily applicable
approved heat lamp or other approved
to a particular weapon system. The applicability of
source. Operate heat lamps per para-
this repair depends upon additional factors such as
loading conditions and laminate thickness. Consult
is used, remove clamps, release ilm
the system speciic technical manual or engineering
and backup plate after a minimum of 8
hours. Allow to dwell at room tempera-
Process Flow Diagram for Disbond Repair.
ture for a minimum of 5 days.