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DPCNews 2009

DPCNews 018 - Penetrants fluorescence

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Written by Administrator
Sunday, 01 November 2009 18:54

November 2009

How to make penetrants fluoresce

The topic of this letter is on the "top priority" list. As experts renown in the European NDT world we had asked to be members of the standardisation group dealing with it. This request was not accepted.

Nevertheless we are very aware of what is going on doing a kind of  "technological intelligence"! Our readers will get pieces of information as soon as we get them.

Last Updated ( Saturday, 14 January 2012 08:13 )

DPCNews 017 - Special products for PT

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Written by Administrator
Thursday, 01 October 2009 18:23

October 2009

Special products for Penetrant Testing

Document updated un September 2014

INTRODUCTION

"Classic" PT materials are well-known. They are described in the ISO 3452-1:2008 and 3452-2:2006 standards as well as in the American SAE-AMS 2644E specification. All the manufacturers have them in their product range.

Last Updated ( Friday, 19 September 2014 09:02 )

DPCNews 016 - Water-washable penetrants

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Written by Administrator
Tuesday, 01 September 2009 17:51

September 2009

Water tolerance vs Water content: Water-washable penetrants

Many specifications require that, when used in tanks, fluorescent water-washable (WW) penetrants shall be tested, for instance once a month, for water content.

Along the years we have noticed that some laboratories gave the result not as the "water content" but as the "water tolerance".

Last Updated ( Tuesday, 17 May 2011 17:58 )

DPCNews 015 - ISO 3452-2 Standard

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Written by Administrator
Saturday, 01 August 2009 17:18

August 2009

Colour-contrast PT: How to understand ISO 3452-2 Standard?

Sensitivity of PT systems

I-Introduction

The 2006 revision of the ISO 3452-2 standard supersedes the 2000 version. Both of them are titled: ‘‘Non destructive testing- Penetrant Testing- Part 2: Testing of penetrant materials’’.

Sometimes a standard revision fails to clear ambiguous points.

Last Updated ( Tuesday, 17 May 2011 17:35 )
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