Technical training
Blade Repair Standard / V4 2023-05-02
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 following 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
Give constructive feedback on the participants’ above practice
The participants shall:
Practise 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 Practise 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 Practise the ability to measure and cut fibreglass mats to the correct dimensions required, and to mark the roll zero direction on the cut mats Practise 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 Practise 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 Practise the ability to accurately cut and shape the required core material for the sandwich panel in accordance with a blade drawing Practise the ability to correctly calculate the total amount of matrix material required for the sandwich panel from the weight of the reinforcement material Practise the ability to correctly calculate, measure and mix the required quantities of each component of the matrix material Practise the ability to apply the matrix material to the glass fibre mats within the pot life and gel time of the matrix Practise the ability to select and use the correct tools to wet out all the fibres in each layer of fibreglass while keeping the fibres in each layer straight Practise the ability to apply vacuum consumables to the mould in the correct order with the correct placement of a thermocouple, and the ability to apply, measure and record the vacuum levels required and achieved
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