Print Email Facebook Twitter Fracture Toughness of Aerospace Structures Title Fracture Toughness of Aerospace Structures: On the Use of Redundant Lattice Structures Author de Boer, T. Contributor Rans, C.D. (mentor) Faculty Aerospace Engineering Department Aerospace Structures & Materials Date 2017-05-29 Abstract Both experimental and numerical studies have shown that the crack-bridging is one of the most significant mechanism contributing to the fracture toughness of natural materials like nacre and bone. This study aims to explore if additive manufactured lattice structures can be used to bridge fatigue cracks as well, thereby improving the fracture toughness of aerospace structures. By using enlarged Selective Laster Sintered unit cells, the response under mix-mode loading of five different unit cells was studied. Numerical models were used to give further understanding of the stiffness, fatigue response, and crack bridging capability of a redundant lattice core. Subject Additive ManufacturingFracture ToughnessDamage Tolerance3D PrintingLattice Structures To reference this document use: http://resolver.tudelft.nl/uuid:27e9dcc3-8422-485e-9926-1868f8900749 Part of collection Student theses Document type master thesis Rights (c) 2017 de Boer, T. Files PDF Thesis Report - Tijs de B ... -Final.pdf 161.25 MB Close viewer /islandora/object/uuid:27e9dcc3-8422-485e-9926-1868f8900749/datastream/OBJ/view