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BS EN ISO 21920-2:2022

BS EN ISO 21920-2:2022

$215.11

Geometrical product specifications (GPS). Surface texture: Profile – Terms, definitions and surface texture parameters

Published By Publication Date Number of Pages
BSI 2022 88
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PDF Catalog

PDF Pages PDF Title
2 National foreword
4 European foreword
7 Foreword
8 Introduction
9 1 Scope
2 Normative references
3 Terms and definitions
3.1 General terms
18 3.2 Geometrical parameter terms
22 3.3 Geometrical feature terms
30 4 Field parameters
4.1 General
4.2 Height parameters
4.2.1 General
4.2.2 Arithmetic mean height
4.2.3 Root mean square height
4.2.4 Skewness
4.2.5 Kurtosis
31 4.2.6 Total height
4.2.7 Maximum height per section
32 4.3 Spatial parameters
4.3.1 General
4.3.2 Autocorrelation length
4.3.3 Dominant spatial wavelength
33 4.4 Hybrid parameters
4.4.1 General
4.4.2 Root mean square gradient
4.4.3 Arithmetic mean of absolute gradient
4.4.4 Maximum absolute gradient
4.4.5 Developed length
34 4.4.6 Developed length ratio
4.5 Material ratio functions and related parameters
4.5.1 Material ratio functions
39 4.5.2 Material ratio parameters
41 4.5.3 Parameters for stratified surfaces using the material ratio curve
43 4.5.4 Parameters for stratified surfaces using the material probability curve
44 4.5.5 Volume parameters
46 5 Feature parameters
5.1 Parameters based on peak heights and pit depths
5.1.1 General
47 5.1.2 Maximum peak height
5.1.3 Mean peak height
5.1.4 Maximum pit depth
48 5.1.5 Mean pit depth
5.1.6 Maximum height
5.2 Parameters based on profile elements
5.2.1 General
49 5.2.2 Mean profile element spacing
50 5.2.3 Maximum profile element spacing
5.2.4 Standard deviation of profile element spacings
5.2.5 Mean profile element height
5.2.6 Maximum profile element height
5.2.7 Standard deviation of profile element heights
51 5.2.8 Peak count parameter
5.3 Parameters based on feature characterization
5.3.1 General
5.3.2 Named feature parameters
53 Annex A (informative) Determination of the first and second derivative
56 Annex B (informative) Determination of the local curvature
57 Annex C (normative) Determination of the material ratio curve
58 Annex D (normative) Determination of profile parameters for stratified surfaces
67 Annex E (normative) Crossing-the-line segmentation to determine profile elements
73 Annex F (normative) Feature characterization
77 Annex G (informative) Summary of profile surface texture parameters and functions
80 Annex H (informative) Specification analysis workflow
82 Annex I (informative) Changes to previous ISO profile documents
83 Annex J (informative) Overview of profile and areal standards in the GPS matrix model
84 Annex K (informative) Relation to the GPS matrix model
85 Bibliography

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BS EN ISO 21920-2:2022
$215.11