Q:
# How does pressure affect density?

**Pressure and density are directly in compressible materials.** As the isostatic pressure applied on a material increases, the material density increases as the atoms or molecules of the material are pushed more closely together.

Density is defined as the mass per unit volume. Pressure applied equally on all sides of a material, called isostatic pressure, causes a reduction in volume, consequently leading to an increase in density. Volume reduction only results from the application of isostatic pressure. Applying pressure uniaxially or biaxially causing the material to expand in directions that it is not constrained. The amount of volume reduction resulting from the application of a certain magnitude of isostatic pressure depends on material properties such as compressive bulk modulus and porosity.

Porous materials are more compressible than solid materials because pores are filled with gases, which are more compressible than solids. The bulk modulus is a material parameter that defines the amount of strain in a single dimension that the material undergoes when it is compressed. Materials with high bulk moduli require a large amount of pressure to undergo a small compressive strain, while materials with low moduli are compressed more readily under the application of pressure. Isostatic pressure is applied to metals and ceramics in hot isostatic pressing to compactify the material and eliminate unwanted porosity.

Learn more about Motion & Mechanics-
Q:
## What is the formula used to calculate mass?

A: There are two formulas that may be used to calculate mass: mass is equal to the volume of an object multiplied by its density (m=v*d) and mass is equivalen... Full Answer >Filed Under: -
Q:
## What is the relationship between buoyant force and density of a liquid?

A: Buoyant force is directly proportional to the density of a liquid or any fluid in general. This relationship can be represented by the equation Fb = dgv, w... Full Answer >Filed Under: -
Q:
## What is the formula to calculate buoyant forces?

A: The formula to calculate buoyant force (FB) states that the upward force exerted on an immersed object is equal to the density (ρ ) of the fluid multiplied... Full Answer >Filed Under: -
Q:
## What is the API gravity table?

A: The specific gravity table published by the American Petroleum Institute (API) is a tool for determining the relative density of various types of oil. Whil... Full Answer >Filed Under: