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hysteresis
(redirected from Hysteresis loss)

   Also found in: Medical, Financial, Acronyms, Encyclopedia, Wikipedia 0.04 sec.

hysteresis

Phenomenon seen in the elastic and electromagnetic behaviour of materials, in which a lag occurs between the application or removal of a force or field and its effect.

If the magnetic field applied to a magnetic material is increased and then decreased back to its original value, the magnetic field inside the material does not return to its original value. The internal field ‘lags’ behind the external field. This behaviour results in a loss of energy, called the hysteresis loss, when a sample is repeatedly magnetized and demagnetized. The materials used in transformer cores and electromagnets are chosen to have a low hysteresis loss. Similar behaviour is seen in some materials when varying electric fields are applied (electric hysteresis). Elastic hysteresis occurs when a varying force repeatedly deforms an elastic material. The deformation produced does not completely disappear when the force is removed, and this results in energy loss on repeated deformations.


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Together with the high coupling efficiency of VP Si 363, this strongly reduced silica network leads to a very low hysteresis loss of the compound.
Hysteresis loss of VP Si 225 and TAC in the silica-filled compounds was lower than all carbon black-filled compounds, as seen in tan delta values at 0 and 60[degrees]C.
To improve the hysteresis loss of tire body compounds, new low surface area carbon blacks have been developed and are a solution to further reduce rolling resistance of a tire.
 
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