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Meeting MS&T22: Materials Science & Technology
Symposium Additive Manufacturing and Cellular/Lattice Structures: Designs, Realization and Applications
Presentation Title Prediction of Mechanical Properties of Ceramic Honeycombs by Polarimetry Measurements of Epoxy Resin Prototypes.
Author(s) David Koellner, Bastien Tolve-Granier, Swantje Simon, Ken-ichi Kakimoto, Tobias Fey
On-Site Speaker (Planned) David Koellner
Abstract Scope We present a non-destructive approach to determine the cellular ceramics compressive strength and fracture behavior. For this, we correlate the photoelastic stresses of polymer (epoxy) prototypes with the mechanical properties of ceramics (alumina). Regular and inverse epoxy honeycombs are 3-D printed via stereolithography with varying structure angle from -35° to 35°, with negative angles forming an auxetic and positive hexagonal lattice. Photoelastic measurements under mechanical loading reveal regions of excess stress, which directly corresponds to the initial fracture points of the ceramic honeycombs. The photoelastic stress distribution is much more homogeneous for angles of smaller magnitude, which is reflected in highly increased compressive strengths up to 446 ± 156 MPa at 0°. By adapting the geometric structural model from Gibson and Ashby, we show that we can use a non-destructive technique to determine the compressive strength of alumina honeycombs from the median photoelastic stress measured on similar epoxy honeycomb structures.

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

3D Printed Fibrous Cellular Multifunctional Structures
A-1: Cytotoxicity of Strontium Calcium Polyphosphate on MC3T3-E1 Cells in 3D Printed Alginate/Collagen Scaffolds
AM-Fabricated Plate Lattice Structures for Impact Applications
Design, Manufacture, Modelling and Testing of Honeycombs with Aperiodic Order
Effect of Geometrical Characteristics on the Mechanical Properties of Co-Cr-Mo Triply Periodic Minimal Surface Lattices Fabricated by Laser-Powder Bed Fusion
Effects of TiB2 in an Al-Cu-Sc Alloy in the Hybrid Investment Casting Process
Enabling Novel Porous Noise Absorbers via Additive Manufacturing
Evaluation of Structural Robustness in Additively Manufactured Lattice Structures
Fabrication, Microstructure and High Temperature Mechanical Properties of Inconel 718 Lattice Structures Manufactured by Laser Powder Bed Fusion
Interlocking Metasurfaces: A Joining Technology for Additive
Laser-based 4D Printing of Ni-Mn-Ga Magnetic Shape Memory Alloys Lattice Structures
Localized Strain, Microstructure, and Property Control of Ti-5553 Lattice Materials
Multi-scale Simulations for Improving the Design of Additive Manufactured Shock Absorbers
Optimized Dissolvable Support Design for 316L Stainless Steel Produced by Laser Powder Bed Fusion
Performance of Titanium Alloy Lattice Structures in Quasi-static and High Strain Rate Environments
Permeable Additive Manufacturing (PermiAM) for Rocketry
Prediction of Mechanical Properties of Ceramic Honeycombs by Polarimetry Measurements of Epoxy Resin Prototypes.
Progressive Nature of Failure of 3D Lattices under Compressive, Shear and Hydrostatic Loads
Specific Energy Absorption of 3D Printed Octet-Truss Lattice Structures with Hollow Struts
Synchronous Involvement of Topology and Microstructure to Design Additively Manufactured Lattice Structure
The Effects of Powder Feedstock and Process Parameter on the Material Characteristics of Ti6Al4V Thin Wall Features Fabricated by Laser Powder Bed Fusion Additive Manufacturing

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