Fiber pushout test
The fiber pushout test is a mechanical test performed on composite materials where a fiber is mechanically pushed out of the material. This test is carried out with the purpose of measuring the matrix/fiber interface de-bonding energy and the effects of frictional sliding between the matrix and the fiber.
To perform this test flat indentation tips, usually made of diamond or tungsten, are used. These tips are mechanically lowered onto the location of the fiber on the composite using a CCD
This test is not to be confused with fiber pull-out, which is a composite crack propagation phenomenon.