1) What are the differences between the wet lay-up approach and
the prepreg approach in hand...
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Mechanical Engineering
1) What are the differences between the wet lay-up approach andthe prepreg approach in hand lay-up? Include both processdifferences and differences in the final product. Make a list.
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WetHand Layup Description Resins are impregnated by hand into fibres which are in the form of woven knitted stitched or bonded fabrics This is usually accomplished by rollers or brushes with an increasing use of niproller type impregnators for forcing resin into the fabrics by means of rotating rollers and a bath of resin Laminates are left to cure under standard atmospheric conditions Materials Options Resins Any eg epoxy polyester vinylester phenolic Fibres Any although heavy aramid fabrics can be hard to wetout by hand Cores Any Typical Applications Standard windturbine blades production boats architectural mouldings Main Advantages Widely used for many years Simple principles to teach Low cost tooling if roomtemperature cure resins are used Wide choice of suppliers and material types Higher fibre contents and longer fibres
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