Apparatus and methods for testing surface properties of a materi

Details Apparatus and methods for testing surface properties of a materi Apparatus and methods for testing surface properties of a materi

1987-09-11

1988-10-11

Levy, Stewart J.

Measuring and testing

Testing by impact or shock

Specimen impactor detail

73 92, 73844, G01N 330, G01N 348

Patent

active

047762020

ABSTRACT:
An apparatus for testing the surface properties of a material is disclosed. The apparatus includes an indentor which is suspended above the surface of a sample and dropped onto the sample. Several testing methods are also disclosed. Surface toughness is measured by dropping the indentor from a variable height and inspecting the surface for failure. Thin film strength is tested by making several drops from various heights and inspecting the surface for flaking of the layer. In addition, damping capacity can be measured by comparing the kinetic energy of the resulting from the drop of the indentor to the strain energy measured by a probe on the opposing surface of the sample.

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