EN ISO 21227-2:2006

SLOVENSKI STANDARD
01-januar-2007
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Paints and varnishes - Evaluation of defects on coated surfaces using optical imaging -
Part 2: Evaluation procedure for multi-impact stone-chipping test (ISO 21227-2:2006)
Beschichtungsstoffe - Beurteilung von Beschichtungsschäden mittels digitaler
Bildverarbeitung - Teil 2: Auswertung der Multisteinschlag-Prüfung (ISO 21227-2:2006)
Peintures et vernis - Évaluation par imagerie optique des défauts des surfaces revetues -
Partie 2: Mode opératoire d'évaluation pour l'essai d'impacts multiples de cailloux (ISO
21227-2:2006)
Ta slovenski standard je istoveten z: EN ISO 21227-2:2006
ICS:
87.040 Barve in laki Paints and varnishes
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 21227-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2006
ICS 87.040
English Version
Paints and varnishes - Evaluation of defects on coated surfaces
using optical imaging - Part 2: Evaluation procedure for multi-
impact stone-chipping test (ISO 21227-2:2006)
Peintures et vernis - Évaluation par imagerie optique des Beschichtungsstoffe - Beurteilung von
défauts des surfaces revêtues - Partie 2: Mode opératoire Beschichtungsschäden mittels digitaler Bildverarbeitung -
d'évaluation pour l'essai d'impacts multiples de cailloux Teil 2: Auswertung der Multisteinschlag-Prüfung (ISO
(ISO 21227-2:2006) 21227-2:2006)
This European Standard was approved by CEN on 19 August 2006.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Central Secretariat or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
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versions.
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© 2006 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 21227-2:2006: E
worldwide for CEN national Members.

Foreword
This document (EN ISO 21227-2:2006) has been prepared by Technical Committee ISO/TC 35
"Paints and varnishes" in collaboration with Technical Committee CEN/TC 139 "Paints and
varnishes", the secretariat of which is held by DIN.

This European Standard shall be given the status of a national standard, either by publication of
an identical text or by endorsement, at the latest by March 2007, and conflicting national
standards shall be withdrawn at the latest by March 2007.

According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary,
Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

Endorsement notice
The text of ISO 21227-2:2006 has been approved by CEN as EN ISO 21227-2:2006 without any
modifications.
INTERNATIONAL ISO
STANDARD 21227-2
First edition
2006-09-01
Paints and varnishes — Evaluation of
defects on coated surfaces using optical
imaging —
Part 2:
Evaluation procedure for multi-impact
stone-chipping test
Peintures et vernis — Évaluation par imagerie optique des défauts des
surfaces revêtues —
Partie 2: Mode opératoire d'évaluation pour l'essai d'impacts multiples
de cailloux
Reference number
ISO 21227-2:2006(E)
©
ISO 2006
ISO 21227-2:2006(E)
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ii © ISO 2006 – All rights reserved

ISO 21227-2:2006(E)
Contents Page
Foreword. iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Principle. 1
4 Requirements . 1
5 Calibration . 2
6 Procedure . 2
7 Evaluation. 3
8 Precision. 3
9 Test report . 4
Annex A (normative) Ratings in accordance with ISO 20567-1 to be used to evaluate the damage
as a whole. 5
Annex B (informative) Example of an extended evaluation. 7

ISO 21227-2:2006(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 21227-2 was prepared by Technical Committee ISO/TC 35, Paints and varnishes, Subcommittee SC 9,
General test methods for paints and varnishes.
ISO 21227 consists of the following parts, under the general title Paints and varnishes — Evaluation of defects
on coated surfaces using optical imaging:
⎯ Part 1: General guidance
⎯ Part 2: Evaluation procedure for multi-impact stone-chipping test
⎯ Part 3: Evaluation of delamination and corrosion around a scribe
iv © ISO 2006 – All rights reserved

ISO 21227-2:2006(E)
Introduction
The conventional ISO test methods for evaluating surface defects and appearance changes often utilize
pictorial standards which depict particular types of surface deterioration and require human visual evaluation.
The technology described in this part of ISO 21227 can yield more objective, accurate, quantitative and
reproducible results when compared to the human visual evaluation techniques.
INTERNATIONAL STANDARD ISO 21227-2:2006(E)

Paints and varnishes — Evaluation of defects on coated
surfaces using optical imaging —
Part 2:
Evaluation procedure for multi-impact stone-chipping test
1 Scope
This part of ISO 21227 describes a procedure for evaluating multi-stone impact damage by means of optical
imaging. A suitable method for simulating the damaging process is specified in ISO 20567-1.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the lates
...