Print Email Facebook Twitter Critical Parameters in Mode I Interlaminar Fracture Toughness Testing of Thermoplastic Composite Materials Title Critical Parameters in Mode I Interlaminar Fracture Toughness Testing of Thermoplastic Composite Materials Author Peters, K.R. Contributor Rans, C.D. (mentor) Faculty Aerospace Engineering Department Aerospace Structures and Materials Programme Structural Integrity and Composites Date 2017-02-06 Abstract The goal of the thesis (executed for Fokker Aerostructures) was to further the understanding of critical parameters in the DCB test method for thermoplastic composites. The influence of fiber bridging, specimen thickness, insert film thickness, crack length and crack opening rate are investigated by means of experimental DCB tests for thermoplastic C/PEKK specimens. Microscopic research is performed in order to link the mechanical behavior to the fractography in the C/PEKK material. The results show that the mode I fracture toughness is influenced by specimen thickness, insert film thickness and crack length as consequence of fiber bridging effects and plastic resin deformation, which can again be related to the tough resin properties and relatively poor fiber/matrix interfacial strength in thermoplastic composites. Subject DCB testmode I fracture toughnessGIcthermoplastic compositeC/PEKKfiber bridginginsert film thicknessDCB specimen thicknesscrosshead opening displacement ratedata reduction method To reference this document use: http://resolver.tudelft.nl/uuid:409082e0-d3f7-47c4-ae76-1811f640bb0a Part of collection Student theses Document type master thesis Rights (c) 2017 Peters, K.R. Files PDF MSc Thesis_KR Peters.pdf 35.59 MB Close viewer /islandora/object/uuid:409082e0-d3f7-47c4-ae76-1811f640bb0a/datastream/OBJ/view