About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
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Symposium
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Mechanical Response of Materials Investigated through Novel In-situ Experiments and Modeling
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Presentation Title |
Complementary In-situ Methods for Crack Evaluation within High-temperature Materials at Ambient Conditions
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Author(s) |
Michael Burtscher, Markus Alfreider, Michael Wurmshuber, Klemens Schmuck, Helmut Clemens, Svea Mayer, Daniel Kiener |
On-Site Speaker (Planned) |
Michael Burtscher |
Abstract Scope |
In modern technological applications the introduction of innovative material concepts, e.g. WCu or intermetallic TiAl alloys, strongly depends on their damage tolerance and fracture behavior. Therefore, the evaluation and determination of fracture processes along distinct interfaces during in situ micron scaled cantilever experiments are investigated. Continuous stiffness measurement was used to calculate the crack length by applying a new analytical approach. Furthermore, digital image correlation is used as a complementary method to validate the determined crack length. The in situ recorded SEM video signal can thus be analyzed semi-automatically. This enables a fast and reproducible data evaluation during fracture experiments. Besides this, the complementary use of two independent methods allows to determine the respective fracture toughness and J-integral values of the investigated materials precisely. The knowledge of the fracture properties of distinct interfaces in turn can be used to modify the alloy and thus to enhance the materials damage tolerance. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, Mechanical Properties, |