GWO Blade Repair Training Standard V2.0
2021-04-01_TS_BR_V2
PRODUCING A COMPOSITE SANDWICH PANEL
Learning objectives:
The participants can perform the production of a composite sandwich panel covered on one side with gelcoat in accordance with a work instruction and drawing (Skills, intermediate level) The participants can act independently in producing a composite sandwich panel covered on one side with gelcoat in accordance with a work instruction and drawing (Ability, intermediate level)
Training staff shall:
Introduce the exercise. Hand out a work instruction and drawing with details on how to build the sandwich panel The work instruction and drawing must contain sufficient detail about the dimensions and areal weight of each layer of fibreglass and the core material to enable the participants to build the panel (the dimensions stated in the followin g participants’ actions are the recommended sizes) The work instruction must contain details of the curing temperature, and the mix ratios of the gelcoat and matrix, but shall not contain details of the amount of gelcoat and matrix required as these must be calculated by the participants Demonstrate how to correctly cut and shape core material to the dimensions required in a blade drawing or work instruction
The participants shall:
Practice the ability to prepare a flat mould (aluminium is preferred) with release agent and to apply flash tape to the correct dimensions in accordance with a work instruction Practice the ability to calculate the correct amount of gelcoat required for a given area and layer thickness, and to calculate, accurately measure and mix the required quantity of each component given the mixing ratio of the gelcoat Practice the ability to measure and cut fibreglass mats to the correct dimensions required, and to mark the roll zero direction on the cut mats Practice the ability to lay up the fibreglass mats on the gelcoat in the correct order and orientation referenced to zero direction with straight fibres and, where applicable, the correct overlaps between the layers Practice the ability to lay up the fibreglass mats on the gelcoat in the correct order and orientation referenced to zero direction with straight fibres and where applicable the correct overlaps between the layers Practice the ability to accurately cut and shape the required core material for the sandwich panel in accordance with a blade drawing Practice the ability to correctly calculate the total amount of matrix material required for the sandwich panel from the weight of the reinforcement material Practice the ability to correctly calculate, measure and mix the required quantities of each component of the matrix material
Global Wind Organisation www.globalwindsafety.org
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