About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
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Symposium
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Additive Manufacturing: Length-Scale Phenomena in Mechanical Response
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Presentation Title |
Application of Profilometery-based Indentation Plastometry (PIP), a Technique to Measure Stress-strain Curves from Indentation, to Additively Manufactured Metal Parts |
Author(s) |
Jimmy Campbell, Tom Southern, Bill Clyne, Max Burley |
On-Site Speaker (Planned) |
Max Burley |
Abstract Scope |
Profilometry-based indentation plastometry (PIP) can be used to determine the stress-strain characteristics of metallic materials from indentation testing of a small, localized area. The procedure uses the residual indent profile and an (accelerated) iterative FEM simulation of the indentation process. The plasticity parameters in a constitutive law (within an indentation finite element model) are repeatedly changed until optimum agreement between measured and predicted residual profile shapes is obtained. The technique characterises the full uniaxial stress-strain relationship, including the yield stress and ultimate tensile strength.
Parts made by laser powder bed fusion (LPBF) additive manufacturing often display both anisotropy and inhomogeneity. In this work, both of these features are characterised using PIP in alloy systems used commonly used for LPBF, gleaning insights that are difficult or impossible to access using conventional tensile testing. |
Proceedings Inclusion? |
Planned: |
Keywords |
Mechanical Properties, Additive Manufacturing, |