Optimization of the Composite Repair Work using 5H Satin Dry Glass Fabric and Epoxy Resin LY5052/HY5052 Materials through the Vacuum Bagging Technique

摘要

Incompositerepairterminology,theintermingledfiberjoints(IFJs)conceptisclearlyidentifiedasthemosteffectiveintransferringstress.However,thepracticalapplicationleadstoapplythelaminatedfiberjoints(LFJs)conceptforcompositerepair.TheLFJsbecomealmostasstrongastheIFJsasthejointedzonelengthincreases.TheLFJsconceptwasimplementedtosetuptherepairconfigurationforthiswork.Itisidentifiedthatfracturetendencyastheresultofcrackpropagationstartsfromthefreeedges.Thistendencyisalleviatedbyapplyingvacuumbagtocompactthelaminatesystem.Ifnecessary,additionalacceleratedcuringwasperformedatlowtemperatureforshorttime.However,thisrepairworkpreferablyapplyingnaturalovernightcuretoensurethestructurestability.Additionally,therepairhandlingandwaitingpurposestake40%outoftheeffectivelyrepairtime.Thewaitingtimeshouldbeanticipatedinthecompositerepairtoreducewastingtimeforunproductiveoutput...