MPI on painted joint

[george keribo]

Please I wanted to know any code reference for painted surface magnetic particle test

[Alan Denney]

My experience is that it does not work,  and this is not surprising. I have had eddy current testing used over painted surfaces to detect underlying cracks with good results, in that cracks were reliably detected. You would need to trial it with coatings on the calibration block.

 

Alan Denney

AKD Materials Consulting Ltd

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[george keribo]

Alan thanks
But I think it's possible cause we have magnetic test method to detect paint coating thickness so it's possible to carry out MPI on a painted joint. I really want to know if there is a code reference or a publication that might say something like that.  Thanks for your contribution I do appreciate.

On Nov 19, 2016 14:02, "Alan Denney" <al...@denney1.freeserve.co.uk> wrote:

My experience is that it does not work,  and this is not surprising. I have had eddy current testing used over painted surfaces to detect underlying cracks with good results, in that cracks were reliably detected. You would need to trial it with coatings on the calibration block.

 

Alan Denney

AKD Materials Consulting Ltd

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of george keribo
Sent: 18 November 2016 12:48
To: materials-welding@googlegroups.com
Subject: [MW:25727] MPI on painted joint

 

Please I wanted to know any code reference for painted surface magnetic particle test

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[dilintas]

If you follow by the letter ASME V and you can demonstrate performance as per Asme V requirements  then you can use it on painted surface under the same conditions.

However it is not advisable 

Sent from my Samsung Galaxy smartphone.

-------- Original message --------

From: george keribo <bere...@gmail.com>

Date: 18/11/2016 14:47 (GMT+02:00)

To: material...@googlegroups.com

Subject: [MW:25727] MPI on painted joint

Please I wanted to know any code reference for painted surface magnetic particle test

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