A major class of Solid Freeform Fabrication (SFF) methods for metal deposition
are based on large heat input. The geometry and microstructural properties of the
deposition depend primarily on the heat input and the subsequent distribution at
the substrate. On one hand the insufficient heat may lead to the inadequate melting
of the metal, on the other hand overheating and heat accumulation leads to the overmelting, resulting in the deformation of the build up geometry. The heat distribution is
governed by the available heat sink . For a better control of the process, the estimation
of heat sinks and the subsequent control of the energy input allows a better control
of the process. A parameter G-factor that estimates the heat sink based on the local
geometry of a part has been introduced. The estimation of G-factor is based on the
simulation and the experimental results. Also a mechanism to determine the G-factor
for various substrate geometries has been introduced.Mechanical Engineerin
