Specific mechanical energy SME

Specific mechanical energy (SME = screw energy input/kg of product) Extruder average percentage fin, mixing mass, and mixing rotations Mixedness (e.g., NMR, AFM, or ACp via DSC if more than one phase)... 

Figure 23. Specific mechanical energy (SME) input of the treatments with different screw configuration (under 40% moisture content based on dry starch) and barrel moisture content (Tang et al., 2008c).

The power consumption of an extruder was measured with a standard wattmeter connected to the extruder drive unit. These results were converted into an index of specific mechanical energy (SME) consumption according to an equation formulated by Levin [2, 3] ... 

The specific mechanical energy also changes with repetition of extrusion. The higher the number of extrusion repetition cycles for the same material, the lower the SME recorded. 

Melting starts earlier the higher the throughput is, due to that the die pressure increases (see Figure 5). The reason for this is that with the increasing mass throughput the melt temperature decreases. The connection becomes obvious by the specific mechanical energy input (SME), which is defined as ... 

---