Coefficient of Moisture Expansion Calculator

Calculate Coefficient of Moisture Expansion (CME)





Formula

The formula to calculate Coefficient of Moisture Expansion (CME) is:

\[ \text{CME} = \frac{\Delta L}{L_0 \times \Delta M} \]

Where:

What is the Coefficient of Moisture Expansion?

The coefficient of moisture expansion (CME) is a measure of how much a material expands or contracts when its moisture content changes. This property is particularly important in materials like wood, polymers, and composites, where changes in moisture can significantly affect dimensions and structural integrity. The CME is typically expressed as a ratio of the change in length per unit length per unit change in moisture content.

Example Calculation

Let's assume the following values:

Using the formula to calculate Coefficient of Moisture Expansion:

\[ \text{CME} = \frac{0.5}{100 \times 0.02} = \frac{0.5}{2} = 0.25 \]

The Coefficient of Moisture Expansion (CME) is 0.25.