温度 密度 petroleum lubricating 油 lubricant 體积 correction astm d1250

Overview

Engineering reference data for Temperature Density Petroleum Lubricating Oil Lubricant Volume Correction ASTM D1250 in material science and properties.

Key Formulas

Stress

$\sigma = \frac{F}{A}$

Force per unit area.

Strain

$\varepsilon = \frac{\Delta L}{L_0}$

Change in length per original length.

Hooke's Law

$\sigma = E \varepsilon$

Stress proportional to strain in elastic region.

Thermal Expansion

$\Delta L = \alpha L_0 \Delta T$

Length change due to temperature.

Variables

References

• Original Source