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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Structural Metamaterials
Presentation Title Single Test Evaluation and Design of Directional Elastic Properties in Anisotropic Materials
Author(s) Jagannadh Boddapati, Moritz Flaschel, Siddhant Kumar, Laura De Lorenzis, Chiara Daraio
On-Site Speaker (Planned) Jagannadh Boddapati
Abstract Scope When the elastic properties of structured materials become direction-dependent, the number of descriptors of their elastic properties increases. In two-dimensions (2D), for example, an anisotropic material can be described by up to 6 independent constants, as opposed to 2, when the properties are direction-independent. Such high number of independent elastic constants expands the design space of structured materials, and leads to unusual phenomena, such as materials that can twist under uniaxial compression. However, this increased number of independent parameters also makes the experimental evaluation of anisotropic material properties more challenging. In this talk, we will present an experimental technique to evaluate the 6 independent elastic constants in 2D structured materials, from a single experiment. The technique combines digital image correlation, unsupervised machine learning, and a multi-axis load cell in a mechanical testing machine, to extract all 6 independent elastic constants, using displacements and global force data.
Proceedings Inclusion? Planned:

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Seeing Beneath the Surface: Estimating Interior Material Properties with Visual Vibration Tomography
Sensitivity and Uncertainty Quantification Analysis in Phononic Metamaterials through Complex-Variable Finite Element Method
Single Test Evaluation and Design of Directional Elastic Properties in Anisotropic Materials
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