GWO Blade Repair Training Standard V2.0
2021-04-01_TS_BR_V2
Training staff shall:
Define the word ‘ m atrix’ in the context of blade repair materials
Define the term ‘fibre content’ , and explain how this affects the properties of the cured laminate
Explain how the matrix material resists compression loads in the laminate structure and how air voids will create localised weak spots, and how dry fibres will be able to bend and kink leading to failure of the laminate structure Ask the participants relevant questions about the function of the matrix material, how air voids and dry fibres can lead to failure of the laminate structure, and how the fibre content can affect the properties of the laminate
The participants shall:
Explain in their own words and share their understanding of the function of the matrix material, and how air voids and dry fibres can lead to failure of the laminate structure Explain in their own words and share their understanding of how the fibre content can affect the properties of the laminate
Training staff shall:
Give constructive feedback on the participants’ explanations about the function of the matrix material and how air voids and dry fibres can lead to failure of the laminate structure, and how the fibre content can affect the properties of the laminate
MIXING RATIO
Learning objectives:
The participants can explain the term ‘mixing ratio’ (Knowledge, intermediate level)
The participants can explain how the incorrect mixing ratio of a multi component material will affect the properties of the cured material (Knowledge, intermediate level) The participants can explain where to find the mixing ratio for a given material (Knowledge, intermediate level) The participants can describe the chemical reaction between the base resin and hardener in epoxy, polyester and polyurethane materials (Knowledge, basic level)
Training staff shall:
Recap the terms ‘mixing ratio’, ‘two component’ and ‘three component’ materials, ‘base resin’, ‘hardener’ and ‘accelerator Describe the chemical reaction between the base resin and hardener in epoxy, polyester, vinyl ester and polyurethane materials Explain where to find the mixing ratio for blade repair chemicals from the manufacturer technical data sheet (TDS)
Global Wind Organisation www.globalwindsafety.org
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