Transcription of 3 Specification of Parameters - National Physical …
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3 Specification of Parameters - National Physical …
3 specification of parameters It is well known that the definitions of Parameters should be unambiguous to avoid being open to different interpretations by both users and metrology software developers. What is not so well known is that Parameters should also have stable or robust definitions in order that they reflect genuine properties of a surface. Here a parameter definition is considered mathematically stable if a small change in the profile implies a small change in the parameter value. Unfortunately the parameter definitions given in ISO 4287 1997[4] (and ISO 4288 - 1996)[5] are not always unambiguous or stable. Since these Specification standards were first drafted, much knowledge has been gained into unambiguous and stable definitions of surface texture Parameters .
3 Specification of Parameters It is well known that the definitions of parameters should be unambiguous to avoid being open to different interpretations by both users and metrology software
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