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    DOI 10.1016/j.addma.2018.04.003
    Analytical process model for wire plus arc additive manufacturing
    2018-5
    Rios Contesse, Sergio Eduardo
    ;
    Colegrove, Paul A.
    ;
    Martina, Filomeno
    ;
    Williams, Stewart W.
    An analytical process model for predicting the layer height and wall width from the process parameters was developed for wire + arc additive manufacture of Ti-6Al-4V, which includes inter-pass temperature and material properties. Capillarity theory predicted that cylindrical deposits were produced where the wall width was less than 12 mm (radius < 6 mm) due to the large value of the surface tension. Power was predicted with an accuracy of +/- 20% for a wide range of conditions for pulsed TIG and plasma deposition. Interesting differences in the power requirements were observed where a surface depression was produced with the plasma process due to differences in melting efficiency and/or convection effects. Finally, it was estimated the impact of controlling the workpiece temperature on the accuracy of the deposit geometry.
    Scopus© Citations 106  3
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