porosity
Sign in to savePorosity or void fraction is a measure of the void (i.e. "empty") spaces in a material, and is a fraction of the volume of voids over the total volume, between 0 and 1, or as a percentage between 0% and 100%. Strictly speaking, some tests measure the "accessible void", the total amount of void space accessible from the surface (cf. closed-cell foam).
Article
14 sectionsContents
- Void fraction in two-phase flow
- Porosity in earth sciences and construction
- Porosity and hydraulic conductivity
- Sorting and porosity
- Porosity of rocks
- Porosity of soil
- Types of geologic porosities
- Porosity of fabric or aerodynamic porosity
- Die casting porosity
- Measuring porosity
- See also
- References
- Footnotes
- External links
Porosity or void fraction is a measure of the void (i.e. "empty") spaces in a material, and is a fraction of the volume of voids over the total volume, between 0 and 1, or as a percentage between 0% and 100%. Strictly speaking, some tests measure the "accessible void", the total amount of void space accessible from the surface (cf. closed-cell foam).
There are many ways to test porosity in a substance or part, such as industrial CT scanning.