Using Instrumented Indentation For Subsurface Damage Measurements

R. S. Polvani; C.J. Evans

doi:10.1364/SCIOF.1990.SMC4

Science of Optical Finishing
Technical Digest Series (Optica Publishing Group, 1990),
paper SMC4
•https://doi.org/10.1364/SCIOF.1990.SMC4

Using Instrumented Indentation For Subsurface Damage Measurements

R. S. Polvani and C.J. Evans

Science of Optical Finishing 1990

Monterey, California United States
10–12 June 1990
ISBN:

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Sub-Surface Damage (SMC)

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R. S. Polvani and C. J. Evans, "Using Instrumented Indentation For Subsurface Damage Measurements," in Science of Optical Finishing, Technical Digest Series (Optica Publishing Group, 1990), paper SMC4.

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Abstract

Even unusual care in polishing, leads to optics with somewhat damaged faces. The question is to what degree? We will show instrumented indentation is a versatile, quick way to give an answer. Limited power, detail size, or durability are accepted hazards of subsurface damage. Its form varies: ductile materials damage by hardening, and brittle ones have fractured surfaces.

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