Journal article
Modelling the elastic properties of bi-continuous composite microstructures captured with TriBeam serial-sectioning
PJ Mignone, MP Echlin, TM Pollock, TR Finlayson, DP Riley, ML Sesso, GV Franks
Computational Materials Science | ELSEVIER | Published : 2017
Abstract
The elastic and physical properties of a tungsten-copper (W-Cu) bi-continuous composite were predicted from microstructural data captured using TriBeam serial sectioning. The reconstructed 3D volume was converted into a Finite Element (FE) mesh. The minimum representative volume elements (RVEs) required for calculating phase volume fraction, Young's modulus and Poisson's ratio were determined. The predicted volume fraction of Cu and Young's modulus were found to be within 2.6%, and 3.6% of the respective experimentally determined values. The minimum RVE size is found to be dependent on the material property. The variability in the required RVE size must be considered for material properties ..
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Funding Acknowledgements
We should like to thank the Defence Materials Technology Centre (Project 4.2) for their technical and financial support for this research. We should also like to thank Mr. Michael Wang for his help in developing the image processing workflow developed during this research. A special thank you is also given to Mr. Jamie Whiteford from BAE Systems Australia for providing the W-Cu materials used in this research. Funding from the UK Science and Technology Facilities Council for use of the ENGIN-X diffractometer located at the ISIS spallation neutron source at the Rutherford Appleton Laboratory is greatly appreciated.