ACI has compared the Inertia properties of a Carbon Fiber Composite Disc (CFCD)
material with the Inertia properties of comparable stiffness Aluminum and Steel discs.
The inertia of 3/4" thick Aluminum is 5 TIMES greater than the Inertia of a
WCD001-1000A-R02 composite disc material.
The inertia of 1/2" thick Steel is 10 TIMES greater than the Inertia of a
WCD001-1000A-R02 composite disc material.
The weight of a solid WCD001-1000A-R02
composite disc material compared to the weight
of 3/4" Aluminum and 1/2" Steel disc's.
The radius of gyration k, for a disc
accounting for diameter. (Radius of
gyration is independent of material).
Inertia of a WCD001-1000A-R02 composite disc material compared with the inertia
of 3/4" thick aluminum and 1/2" thick steel.
ACI has created a diagram clearly showing the magnitude of difference with
respect to inertia of Composite, Aluminum and Steel disks materials on a log
scale.
Inertia of Aluminum is 5 TIMES greater
than the inertia of composite disc.
Inertia of Steel is 10 TIMES greater
than the inertia of composite disc.
The moment of Inertia is the product of
the disc mass (weight) and radius of
gyration squared.
An important property that a disc
possesses is its moment of inertia. Of
particular importance is its inertia
about the z axis.
