[ VCF = \exp\left( -\alpha_15 \Delta t \left(1 + 0.5 \alpha_15 \Delta t\right) \right) ]
This 2-term approximation is valid for most industrial ranges (±0.0002). For higher precision, use: astm table 54 excel
[ VCF = \exp\left( -\alpha_15 \Delta t \right) \cdot \left(1 - 0.5 \alpha_15^2 \Delta t^2 \right) ] [ VCF = \exp\left( -\alpha_15 \Delta t \left(1 + 0
[ VCF = \frac\textVolume at t\textVolume at 15°C ] astm table 54 excel