Technical training
Blade Repair Standard / V5 23022026
Show examples of, and explain the characteristics of, UD, Biax and Triax glass fibre mats
Explain how a laminate is constructed from multiple layers of fibres
Show an example of, and explain the characteristics of, 'hardback' materials
Define the term 'prepreg'
Explain how prepreg materials are used during production
Ask the participants relevant questions about the reinforcement materials used in composite laminates, and how those materials resist tensile loads in the blade
Give constructive feedback on the participants‘ explanations about the reinforcement materials used in composite laminates, and how those materials resist tensile loads in the blade
The participants shall:
Share understandings about the reinforcement materials used in composite laminates and how those materials resist tensile loads in the blade
ELEMENT 15.2 - MATRIX MATERIALS
Learning objective:
108) The participants can describe matrix materials used in composite laminates and how the matrix resists compression loads in a blade (Knowledge, basic level)
The instructor shall:
Explain that matrix materials give shape, and distribute and transfer loads on reinforcement by resisting compression loads in blades
Define the terms 'base resin', 'hardener' and 'accelerator'
Describe the component parts of and, at a basic level, the chemical reactions that take place during curing in the following materials: epoxy, polyester vinyl ester and polyurethane
The description of chemical reactions should be kept at a basic level, such as: when base material and hardener are mixed, they react together forming cross links that create a thermoset plastic material, and heat is produced during the reaction process
Note
Describe the differences between the curing process of epoxy materials and polyester materials
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