The efficiency of removal of solid alumina inclusions by filtration and the distribution of
inclusions captured through the thickness of the filter was investigated for an aluminum …

This work summarizes the findings of multi-objective optimization of a gravity sand-cast steel
part for which an increase of casting yield via riser optimization was considered. This was …

During the last couple of decades the possibility of modelling multi-physics phenomena has
increased dramatically, thus making simulation of very complex manufacturing processes …

The Niyama criterion, a local thermal parameter that is a common output of casting
simulation software packages, is frequently used to predict shrinkage porosity defects in …

Casting simulation results are only useful to a foundry if they reflect reality, which requires
accurate thermophysical property data for the alloys being simulated. Of particular interest in …

Several models predicting microshrinkage in castings are revised in this analysis. A
mathematical model, based on Niyama criterion, is introduced here which considers the …

In the oil & gas industry, extraction of oil reserves from pre-salt subsea oil fields requires
pipelines and risers to be joined with welds that overmatch the X65 pipe yield strength by …

This thesis deals with numerical simulations of gravity sand casting processes for the
production of large steel parts. The entire manufacturing process is numerically modeled …

Porosity is one of the most common defects in casting production. When some parts of the
casting begin to solidify they contract due to the difference of densities between the liquid …

The benchmark simulation Niyama results from the SFSA/MTI simulation qualification
procedure are compared, and it is seen that the Niyama results for all benchmark alloys can …