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Round-Robin Evaluation Of ISO 20340 Annex A Test Method

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Thus to establish the precision of ISO 20340 Annex A six laboratories participated in a round-robin evaluation of ISO 20340 annex A test method for the first time. The aim was to estimate the repeatability and the reproducibility of this test.

Product Number: 51316-6991-SG
ISBN: 6991 2016 CP
Author: Nathalie Lebozec
Publication Date: 2016
Industries: Maritime , Test Method
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Among available standardized test methods for evaluating the performance of marine and offshore coatings ISO 20340 annex A is widely used when it concerns cosmetic corrosion. It is well known that tests performed on presumably identical materials in presumably similar circumstances do not in general yield to identical results. Such deviation is attributed to unavoidable random errors inherent in every test procedure and the fact that the parameters that may influence the outcome of a test cannot all be completely controlled. One consequence of such deviation is that different coating selection may be obtained upon where and how the test is performed as ISO 20340 annex A includes acceptance criteria for the selection of coating systems. Thus to establish the precision of ISO 20340 Annex A six laboratories participated in a round-robin evaluation of ISO 20340 annex A test method for the first time. The aim was to estimate the repeatability and the reproducibility of this test upon laboratory and eventually to determine how to improve the test method and the standard for the further revision of the standard. Five different painted systems applied on abrasive blasted steel were selected so that it included. The results of this study in terms of scribe creep and pull-off strength data were analyzed regarding the repeatability within a laboratory and lab-to-lab reproducibility.

Key words: Marine paint, Round-robin, Corrosion test, ISO 20340

Among available standardized test methods for evaluating the performance of marine and offshore coatings ISO 20340 annex A is widely used when it concerns cosmetic corrosion. It is well known that tests performed on presumably identical materials in presumably similar circumstances do not in general yield to identical results. Such deviation is attributed to unavoidable random errors inherent in every test procedure and the fact that the parameters that may influence the outcome of a test cannot all be completely controlled. One consequence of such deviation is that different coating selection may be obtained upon where and how the test is performed as ISO 20340 annex A includes acceptance criteria for the selection of coating systems. Thus to establish the precision of ISO 20340 Annex A six laboratories participated in a round-robin evaluation of ISO 20340 annex A test method for the first time. The aim was to estimate the repeatability and the reproducibility of this test upon laboratory and eventually to determine how to improve the test method and the standard for the further revision of the standard. Five different painted systems applied on abrasive blasted steel were selected so that it included. The results of this study in terms of scribe creep and pull-off strength data were analyzed regarding the repeatability within a laboratory and lab-to-lab reproducibility.

Key words: Marine paint, Round-robin, Corrosion test, ISO 20340

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