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Poster

Investigation of crack propagation of hierarchically structured ceramic materials on different length scales using bending tests

Sunday (01.01.2040)
00:00 - 21:38
Part of:
Line-Up:
- Poster The versatile usage of wrinkled surfaces 1 Bernhard Alexander Glatz
- Poster Penguin feather mimicking oil infused elastomer for anti-icing property 1 Dipl.-Ing. Nguyen Thanh-Binh
- Poster Radiation-based methods for surface modification of supramolecular peptide fibrils 0 Juhaina Bandak
- Poster Investigation of crack propagation of hierarchically structured ceramic materials on different length scales using bending tests 1 Cecilia Müller
- Poster Tobacco mosaic virus disks, preparation of samples to investigate mineralization by low voltage electron microscopy 1 Dr. Sabine Eiben
- Poster Deformation of Liquid-Liquid Phase Boundary as Template for Novel Surface Structured Polymer Particles and Coatings 1 Helena vom Stein
- Poster Sclerenchymatic tissue in Banksia follicles – The effect of moisture on dimensional and mechanical properties 1 Friedrich Reppe
- Poster Reconstructing in-situ nanofibrillar orientation and mechanics in arthropod cuticle using X-ray diffraction modelling 1 Ph.D. Yanhong Wang
- Poster Structural origins of morphing in plant tissues 1 Prof. Dr. Hanoch Daniel Wagner
- Poster What is the effect of cell network topology on the poro-elastic properties of bone? 1 Alexander van Tol
- Poster The fibrillar-level mechanisms of mutability in echinoderm connective tissue analysed using in situ synchrotron small-angle X-ray scattering 1 Dr. Himadri Shikhar Gupta
- Poster Growing bone-like tissues on negative Gaussian curvature surfaces 1 Prof. Dr. John Dunlop
- Poster Gradient porous materials for reliable structured adhesives 1 Ph.D. Di Tan
- Poster Transfer of surface properties of wheat leaves to technical surfaces 1 Miriam Huth
- Poster Damping Behaviour of Bioinspired and Natural Fibre Composites 1 Wilhelm Woigk
- Poster Cancer cells biomineralize ionic gold into nanoparticles-microplates via secreting defense proteins with specific gold-binding peptides 1 Dr. Ajay Vikram Singh
- Poster Microstructural Assessment of Calvarial Fusion in Mice of Different Ages and its Biomechanical Implications 1 Dr. Junning Chen
- Poster Diffusion-limited electroless silver reduction on copper for "porous monocrystal" 1 Dr. Nikolay Ryzhkov
- Poster Multiscale simulations of directed spider dragline silk self-assembly by flow 1 Dipl.-Ing. Ana Herrera
- Poster Inspirational Multiscale Natural Structures 1 Dr. XiaoMeng Sui
- Poster The Exoskeleton of Scorpions: from Structure to Mechanical Function 1 Israel Kellersztein
- Poster Investigating the multilayer fiber-reinforced structure of the wood cell using computer simulations and additive manufacturing 1 Laura Zorzetto
- Poster Light guided 3D-structuring of EPS produced by red algae 1 Moritz Klotz
- Poster Structural optimization of biopolymer composite Cottonid by variation of manufacturing parameters 1 Matthias Langhansl
- Poster Biomineralization of Materials made of Engineered Spider Silk Proteins 1 Vanessa Wicklein
- Poster Micro-Ikebana by Biomimetic Crystallization of Alkaline Earth Carbonates 1 Shota Kobayashi
- Poster Bioinspired hairy surfaces 0 Stefan Müllers
- Poster Reagent-free modification of bio-hydrogels by electron irradiation towards biomedical applications 1 Stefanie Riedel
- Poster Controlled Modification on Wood via SI-ATRP 1 Marta Vidiella del Blanco
- Poster Plant Biomimetics: Surface-Structured Pollen Particles and Transparent Flower Petals 1 Prof. Dr. Olaf Karthaus
- Poster Coupling of polymers to tobacco mosaic virus: towards the production of amphiphilic virus tubes 1 Dr. Sabine Eiben
- Poster Mechanical stable sulfobetainc Hydrogels - A candidate for biomedical application 1 Ramona Bianca Jasmin Ihlenburg
- Poster Structuring V2O5 Nanocomposites to Adapt the Sponge Spicules’ Architecture 1 Achim Diem
- Poster Fibers, Yarns and Non-Woven Meshes – Tough Morphologies Made of Recombinant Spider Silk Proteins 1 Fabian Müller
- Poster Recombinant Spider Silk-based Hybrid Materials for Advanced Energy Technology 1 Tamara Aigner
- Poster Bio-mediated materials syntheses 1 Dr. Daniel Van Opdenbosch
- Poster Design of Biomimetic Thin Coatings Composed of Cellulose Beta-Nanocrystals for Epitaxial Crystallization and Coassembly of 1D Nanoparticles 0 Dipl.-Ing. Zihao Lu
- Poster Seeded Mineralization Leads to Prismatic-Type CaCO3 Thin Coatings with Multiple Structural Functions 0 Ming Li
- Poster Multifunctional Layered Magnetic Composites 1 Christian Debus
- Poster Cuttlebone-inspired Structures for Mechanical Damping 1 Dipl.-Ing. Andrea Knöller

Session P.1: Poster discussion evening
Belongs to:
Session P: Poster Presentation


Many natural materials have exceptional mechanical properties, which are difficult to reproduce in materials engineering. One example are teeth which are astoundingly resistant under the harsh fatigue and environmental loading conditions. They possess potent strengthening and toughening mechanisms to hinder crack formation and propagation. Zirconia materials have found increasing interest for tooth replacements, because of their toughness, biocompatibility and aesthetic appearance. In contrast to teeth, they are prone to brittle fracture despite the inbuilt transformation toughening mechanism of certain zirconia formulations. We investigated possibilities to further increase the toughness of zirconia-based ceramic constructs by implementing hierarchical features into the structure, that were shown to be important for the fracture resistance of teeth. Electrophoretic deposition (EPD) has been shown a very promising method to produce multi-layered zirconia constructs of variable shape, consisting of alternating layers of cubic stabilized zirconia and tetragonal partially stabilized zirconia [1]. Preceding mechanical studies of such structures showed promising results[2].

We have proposed a new method for the investigation of fatigue in hierarchically structure ceramics on the nanoscale up to 50 cycles [3] and we showed that nanoindentation is a useful tool for the local analysis of the influence of layers, gradients and material inhomogeneities on the fatigue behaviour. On the poster we will present new results in this areas based on a higher number of cycles now focusing on potential crack propagation initialization. We also investigated the mechanical properties of multi-layered samples with bending tests and we will show the influences of the number and thickness of the layers and their sequence. Moreover results of light microscopy and scanning electron microscopy will be presented illustrating the crack propagation through the different layers.

References

1. C. Mochales, et al. Tetragonal and cubic zirconia multilayered ceramics created by EPD, J. Phyz. Chem B, (2013)

2. R. Zehbe, et al., Electrophoretic deposition of multilayered (cubic and tetragonal) zirconia ceramics for adapted crack deflection, J Eur Ceram Soc (2015)

3. C. Müller, A. Maerten, W.-D. Müller, C. Fleck, Investigation of fatigue and crack propagation of hierarchically structured ceramic materials using nanoindentation, LCF8 (2017)

Speaker:
Additional Authors:
  • Prof. Dr. Claudia Fleck
    Technische Universität Berlin