et

Sa

1 символ

Terminological databases

Metroloogia terminibaas

ID 574346 Last modified 10.05.2026
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Domain Standardisation - Metrologymeasuring procedures
arithmetic mean height предпочтительный термин
mean roughness Ra вариант термина
Sa
arithmetic average surface roughness устаревший термин
roughness average устаревший термин
  • pinna profiili ordinaadi absoluutväärtuste aritmeetiline keskmine
  • arithmetic mean of the absolute ordinate values of the surface profile
  • height parameter that is the mean of the absolute of the ordinate values of the scale-limited surface
aritmeetiline keskmine kõrgus предпочтительный термин
Usage examples
  • Aritmeetiline keskmine kõrgus (profiilide puhul Pa, Wa, Ra ja pindade puhul Sa) on pinna ebatasasuste keskmine absoluutne hälve keskmisest joonest või tasapinnast valimipikkuse piires ja on pinna kareduse hindamisel kõige levinum parameeter, mis esindab absoluutsete tippude ja orgude hälvete aritmeetilist keskmist.
profiili aritmeetiline keskmine
Sa символ
Pa, Wa, Ra символ
profiili keskmine aritmeetiline hälve устаревший термин
keskmine pinnakonarus устаревший термин
arithmetic mean height предпочтительный термин
Usage examples
  • Arithmetical mean height (Pa, Wa, Ra for profiles, Sa for surfaces) is the average absolute deviation of surface irregularities from the mean line or plane within a sampling length, and it is the most common parameter for assessing surface roughness, representing the arithmetic average of absolute peak and valley deviations.
mean roughness Ra вариант термина
Sa символ
Pa, Wa, Ra символ
arithmetic average surface roughness устаревший термин
roughness average устаревший термин

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