# Characteristic diameter for yearly load

The characterisitc diameter $D_{x_y}$ is the location at which the effect of the yearly loss factor commences.

For more information, refer to the characteristic diameter $D_x$.

Symbol
$D_{x_{y}}$
Unit
mm
Formulae
$D_{e} e^{\frac{2000 \operatorname{abs}{\left(\frac{\operatorname{k_{0}}{\left(\frac{D_{e} q_{x}}{2000} \right)}}{\operatorname{k_{1}}{\left(\frac{D_{e} q_{x}}{2000} \right)}} \right)}}{D_{e} q_{x}}}$
Related
$D_{e}$
Used in
$T_{4y}$