ДСТУ EN ISO 21920-2:2022 Геометрические спецификации изделия (GPS). Текстура поверхности: профиль. Часть 2. Термины, определения и параметры текстуры поверхности (EN ISO 21920-2:2022, IDT; ISO 21920-2:2022, I...

ДСТУ EN ISO 21920-2:2022
(EN ISO 21920-2:2022, IDT; ISO 21920-2:2021, IDT)

Геометричні специфікації виробу (GPS). Текстура поверхні: профіль.
Частина 2. Терміни, визначення та параметри текстури поверхні

 
   
 
 
     
Не є офіційним виданням.
Офіційне видання розповсюджує національний орган стандартизації
(ДП «УкрНДНЦ» http://uas.gov.ua)

Contents

Foreword

Introduction

1 Scope

2 Normative references

3 Terms and definitions

3.1 General terms

3.2 Geometrical parameter terms

3.3 Geometrical feature terms

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

4.2.6 Total height

4.2.7 Maximum height per section

4.3 Spatial parameters

4.3.1 General

4.3.2 Autocorrelation length

4.3.3 Dominant spatial wavelength

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

4.4.6 Developed length ratio

4.5 Material ratio functions and related parameters

4.5.1 Material ratio functions

4.5.2 Material ratio parameters

4.5.3 Parameters for stratified surfaces using the material ratio curve

4.5.4 Parameters for stratified surfaces using the material probability curve

4.5.5 Volume parameters

5 Feature parameters

5.1 Parameters based on peak heights and pit depths

5.1.1 General

5.1.2 Maximum peak height

5.1.3 Mean peak height

5.1.4 Maximum pit depth

5.1.5 Mean pit depth

5.1.6 Maximum height

5.2 Parameters based on profile elements

5.2.1 General

5.2.2 Mean profile element spacing

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

5.2.8 Peak count parameter

5.3 Parameters based on feature characterization

5.3.1 General

5.3.2 Named feature parameters

Annex A (informative) Determination of the first and second derivative

Annex B (informative) Determination of the local curvature

Annex C (normative) Determination of the material ratio curve

Annex D (normative) Determination of profile parameters for stratified surfaces

Annex E (normative) Crossing-the-line segmentation to determine profile elements

Annex F (normative) Feature characterization

Annex G (informative) Summary of profile surface texture parameters and functions

Annex H (informative) Specification analysis workflow

Annex I (informative) Changes to previous ISO profile documents

Annex J (informative) Overview of profile and areal standards in the GPS matrix model

Annex K (informative) Relation to the GPS matrix model

Bibliography