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March 2016 : Overhead magnetic particle inspection

Written by Dubosc
Monday, 04 April 2016 22:57

Some of our readers asked us how to perform an overhead MT inspection: this is, indeed, a rarely mentioned topic.

Our point of view comes as follows:

Last Updated ( Tuesday, 05 April 2016 23:02 )

Mail inbox - December 2015 : Thixotropic magnetic inks ?

Written by Dubosc
Tuesday, 24 November 2015 22:52

Having to perform an MT inspection above his head, on an overhead structure, one of our readers wondered whether thixotropic detecting media exist for this method.

Last Updated ( Tuesday, 05 April 2016 22:52 )

Mail Inbox - September 2013

Written by Administrator
Saturday, 17 August 2013 05:27

Is it really useless?

September 2013

One of our readers,a trainer in non-destructive testing, asked us a question regarding the magnetizing equipment made of two permanent magnets connected to one another by a stainless steel cable.

Indeed, he was in doubt, as the suppliers he had asked had told him that this cable was strictly useless.
Not at all convinced by such an answer (why would manufacturers put useless items on their equipment?), our reader sent us a question.
Our point of view is easy to detail.

Last Updated ( Saturday, 17 August 2013 05:39 )

Mail Inbox - July 2013

Written by Administrator
Saturday, 15 June 2013 08:18

Magnetic particle testing is a very forgiving test method

July 2013

One of our readers, an auditor for a company that manufactures mechanical components, lets us know he has audited a sub-contractor who uses MT to check its fully machined and finished parts after the ASTM E709 and DIN 54130 standards and after the acceptance criteria supplied by the prime.
This inspection is performed on magnetic bench with a water-based fluorescent magnetic ink.

Last Updated ( Saturday, 15 June 2013 08:33 )

Mail Inbox - May 2013

Written by Administrator
Friday, 12 April 2013 08:11

Ht and B figures

May 2013

Mr Leau, a French NDT technician, sent us a message:

First of all, thank you for all your articles on your Website, which are always very interesting.
I submit to you a "topic":
In many MT procedures (and standards) the suitable high and low values of the tangential magnetic field to perform the inspection are stated, for example, between 2,000 and 6,000 A/m. Some operators think this shall be followed blindly, and dare in no case exceed the high value (i.e. 6,000 A/m in the above quoted example.)
Be it an oversight or not in the standards, it seems that they mention no constraining high figures.

Last Updated ( Friday, 12 April 2013 08:48 )
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