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Hubble Bubble Tests and Trouble: The Dark Side of Misreading the Relevance of Coating Testing

Hubble Bubble Tests and Trouble: The Dark Side of Misreading the Relevance of Coating Testing
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Aside from the use of successful track records, it is commonplace for coating specifications to be written based upon test criteria deemed important by specification authorities. But are the tests relevant to the intended service environment? Or has the meaning of the test data been misinterpreted? Perhaps the tests have been ascribed a level of accuracy and dependency that the test method simply cannot deliver. These are vital factors to be considered if a coating specification is to be supported in a meaningful way and to prevent all sorts of problems. 

Product Number: 41210-558-SG
Author: Mike O’Donoghue, V.J. Datta, Mike Winter, Carl Reed
Publication Date: 2010
Industry: Coatings
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$20.00
$20.00

Aside from the use of successful track records, it is commonplace for coating specifications to be written based upon test criteria deemed important by specification authorities. But are the tests relevant to the intended service environment? Or has the meaning of the test data been misinterpreted? Perhaps the tests have been ascribed a level of accuracy and dependency that the test method simply cannot deliver. These are vital factors to be considered if a coating specification is to be supported in a meaningful way and to prevent all sorts of problems. This paper describes several instances where coating specifications were built upon an inappropriate use of certain test data and the dark consequences that may result. Proposals are given to provide better ways to conduct testing that potentially offers a more meaningful correlation with real world coating performance.

Aside from the use of successful track records, it is commonplace for coating specifications to be written based upon test criteria deemed important by specification authorities. But are the tests relevant to the intended service environment? Or has the meaning of the test data been misinterpreted? Perhaps the tests have been ascribed a level of accuracy and dependency that the test method simply cannot deliver. These are vital factors to be considered if a coating specification is to be supported in a meaningful way and to prevent all sorts of problems. This paper describes several instances where coating specifications were built upon an inappropriate use of certain test data and the dark consequences that may result. Proposals are given to provide better ways to conduct testing that potentially offers a more meaningful correlation with real world coating performance.

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This group of authors, thinking outside the proverbial box, and with a mind to Shakespeare’s Macbeth, presented a paper at SSPC 2010 entitled “Hubble, Bubble, Tests and Trouble: The Dark Side of Misreading the Relevance of Coating Testing”. A challenge to the status quo of coatings performance testing, the paper boldly questioned much of the conventional wisdom surrounding coating testing and how that testing is interpreted. 
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