The MACSIM project “step by step”
The main stages of the MACSIM project:
The different steps of the projects are summarized in the table below.
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Selection of application cases |
Definition of targetted and priority applications |
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Technical Specifications |
Definition of inputs/outputs and of the functionalities of the simulator |
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| 2. Models of acoustic emission sources |
2009/2010 |
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Research works on the models for the source |
Numerical Simulations allowing to characterize the behaviour of acoustic emission sources for various configurations of materials ans constraints |
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Creation of a database for CIVA |
Integration of models resulting from the previous works in libraries encapsulating « breaking » descriptions |
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| 3. Modeling of the waves propagation and their reception |
2010/2011 |
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Waves propagation |
Adaptation of the existing hybrid « SA-FE » model to the simulation of Rayleigh and Lamb waves in AE configurations |
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Reception |
Creation of a database of Acoustic Emission transducers acousting for their specificities (broadband, thick crystal, resonance along several drections,etc.) |
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| 4- Software integration in CIVA |
2011 |
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Graphical User Interface, dedicated tools, specific post-processing features, etc. |
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| 5- Validation & valorisation |
2011 |
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Validation of models |
Experimental measurements allowing validation of individual models (breaking, propagation, reception) |
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Validation of the simulator |
Comparison between simulations and experimental tests of full AE acquisitions. |
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Valorisation |
Adaptation of the software for a release in a commercial version of CIVA |
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The targetted applications in priority:
In order to be able to release such a tool within a quite short period of time, the MACSIM project targetted priorities for the applications that will be available in a first version of CIVA-AE, and the priority nr 1 is to be able to simulate the control of conventional pressure devices:
- Geometries of work pieces:
- Parameterized geometries having planar, cylindricar or spherical shape
- CAD geometries (with constant thicknesses for thin components)
- Thicknesses:
- From several millimeters to several hundreds of millimeters,
- Accounting for rayleigh waves (thick structures) and Lamb waves (thin structures) but no bulk waves (i.e very thick components not available in a first time),
- Materials: metallic (typically steel or aluminium),
- Discontinuities: Nozzle, rivet holes,
- Contents: Filled with gas or liquid,
- Damaging: Breaking generated by a pressure load (typically from 1.2 to 1.5 times the rated pressure).
