Talk:Rule of mixtures

f presumptively defined as volume fraction, now and ever
In the case of specific heat, I know I always use the mass fraction, not the volume fraction, but this article—as presently written—implies that f is always the volume fraction. &mdash; MaxEnt 14:09, 8 March 2019 (UTC)


 * See also Kopp's law. &mdash; MaxEnt 14:11, 8 March 2019 (UTC)

On the upper bound
The given formula for Voigt modulus is not the upper bound. I try to correct it without revising significantly. However, the reference was my paper and what I added as the picture and sentence was deleted due to wiki's policy. Can someone help correct that info? The detailed derivation and conclusion are given at https://arc.aiaa.org/doi/full/10.2514/1.J063863. WenbinWiki (talk) 22:34, 26 March 2024 (UTC)


 * Using sock accounts or recruiting others to make the edit on your behalf is not any better. MrOllie (talk) 13:49, 28 March 2024 (UTC)