Webb, Presiding 1:15 POLYMERIZATION OF DENTAL COMPOSITE: LIGHT ANGLE AND MICROSHRINKAGE
INFLUENCE ON RESTORATIVE LONGEVITY **, Katie P.
A "leaker" casting defect caused by microshrinkage
Subsequent review of the simulations using more sensitive criteria duplicated the microshrinkage
found in the part (Fig.
mm is the minimum level to eliminate microshrinkage
Factors Affecting Microshrinkage
Formation in Thin Wall Ductile Iron," J.
Casting process modeling of the new design showed no sign of microshrinkage
or porosity inside the wheel.
In their presentation, "Factors Affecting Microshrinkage
Formation in Thin-Wall Ductile Iron" (04-012), J.
AFS Research Report: Factors Affecting Microshrinkage
Formation in Thin Wall Ductile Iron (04-012)
Prediction capabilities include temperatures, pressures and velocities during filling, freezing times, macro and microshrinkage
distributions, Niyama coefficients, local freezing times, primary dendrite arm spacings (Al alloys), steady-state die temperature distributions, mold temperatures, cooling rates and temperature gradients.
Microporosity was observed in both castings most likely as the result of microshrinkage
sometimes associated with low-carbon equivalent iron.
minimized defects like microshrinkage
by using short and medium freezing range copper alloys;
All of these attributes are related to eutectic graphite and graphite shape, which are important factors for controlling the microshrinkage
that occurs at the late stage of solidification.