Technical training
Blade Repair Standard / V5 23022026
ELEMENT 20.5 - TRAILING EDGE SECTION
Learning objectives:
178) The participants can explain the differences between a structural and non-structural adhesive (Knowledge, intermediate level)
179) The participants can perform the bonding of two surfaces together to create a trailing edge section (Skills, intermediate level)
180) The participants can act independently in the bonding of two surfaces together to create a trailing edge section (Ability, intermediate level)
The instructor shall:
Explain the differences between a structural and non-structural adhesive and give some examples of products in each category
Explain how surface finish and cleanliness will affect the ability of an adhesive to bond to a surface. Explain that the peel ply on a laminate can leave the correct surface finish for adhesive and that the peel ply must only be removed immediately before applying the adhesive
Explain that the blade manufacturer’s work instructions detail the surface finish requirements for adhesives
Explain and demonstrate where to find the mixing and curing requirements for different adhesive products
Demonstrate how to safely cut the sandwich panel in half, and prepare the materials and tools required to bond the pieces together into a trailing edge section
Demonstrate how to apply the adhesive to the bond line to ensure the correct dimension, and how to correctly apply clamps to the bond line to ensure that the adhesive wets out the two surfaces
Explain and demonstrate how to correctly cure adhesive
Ask the participants relevant questions about the differences between structural and non-structural adhesives
Facilitate practice to improve the participants’ ability to cut the sandwich panel in half and to bond the two halves together to create a trailing edge section
Give constructive feedback on the participants’ explanations about the differences between structural and non-structural adhesives, and their ability to cut the sandwich panel in half and to bond the two halves together to create a trailing edge section
Global Wind Organisation / www.globalwindsafety.org
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