Technical training
Blade Repair Standard / V4 2023-05-02
Explain how a vacuum is used to remove air and to consolidate the laminate during the curing process
Explain how an absolute pressure gauge (vacuum gauge) is used to record the vacuum level during the entire curing process
Explain how to find the blade manufacturer specific vacuum levels for curing a laminate
Explain the function of the vacuum consumable materials:
a.
peel ply
b.
release film
c.
breather fabric
d.
tacky tape
e.
vacuum foil
f.
vacuum tube
g.
resin trap
Demonstrate how to create a vacuum bag over a laminate repair, where to place the thermocouple to get the most accurate temperature reading, and how to use a resin trap to protect the vacuum pump from excess resin
Explain the limitations with the temperature settings on the heating blankets
Demonstrate how to use the reading from the temperature gauge to adjust the heating blanket to the correct curing temperature
Explain:
a. how to record and document the vacuum level and curing temperature at regular intervals during the curing process b. the health and safety implications of removing the vacuum bagging materials after curing the repair by considering sharp edges and the possibility of uncured material. Demonstrate how to mitigate those risks using PPE
c. how the peel ply should not be removed until immediately before the application of the next repair layer
d. how the peel ply makes the surface of the laminate rough for the application of the next layer, and it also protects the surface of the laminate from external contamination e. that the blade manufacturer’s work instructions will detail the exact surface finish for the application of repair layers Ask the participants relevant questions about the functions of the tools, instruments and vacuum consumables used during the curing process
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