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Penetrant testing and post-cleaning

Written by Administrator
Saturday, 12 October 2013 14:35

November 2013

Many specifications, procedures, codes, papers deal with precleaning, i.e. cleaning the part PRIOR to applying penetrant.

However, POST-CLEANING, i.e. cleaning the part AFTER the entire PT process has been performed is not that often talked about.

Last Updated ( Saturday, 12 October 2013 14:44 )

Developers / Penetrants compatibility

Written by Administrator
Saturday, 14 September 2013 09:18

October 2013 -
Corrected and completed in June / July 2014

The compatibility of the developers with the penetrants is a topic which is rarely talked about and you will read that it misunderstood by many people supposed to know penetrant testing (PT).

For instance, ask them the following question:

- With which penetrant a water-soluble developer (also called aqueous soluble developer) may be used?

Last Updated ( Sunday, 15 June 2014 16:34 )

Surface preparation before penetrant testing: paint stripping

Written by Administrator
Saturday, 17 August 2013 05:55

September 2013

We have already had the opportunity to write about the surface preparation prior to Penetrant Testing(1) and, especially, about paint stripping(2).

Quite often, we get questions on this topic. Underneath, you may read our point of view.

Last Updated ( Saturday, 17 August 2013 06:13 )

Penetrant Testing: Penetration time vs Kinematic viscosity

Written by Administrator
Friday, 12 July 2013 13:00

August 2013

In this paper, we use the term “penetration time” listed in the ISO 12706:2009 standard instead of the term “dwell time” listed in the Section F of the ASTM E1316 –11b standard.

We often hear and read that at low temperature, when the temperature decreases, the penetrant becoming more viscous, the penetration time shall be increased and conversely, at high temperature, the penetration time can be reduced because the penetrant is less viscous.

The penetration time is specified in many standards/codes/specifications.

Last Updated ( Friday, 12 July 2013 15:48 )
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