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November 2013 - Magnetic particle testing, electricity and cosinus φ

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Written by Administrator
Saturday, 12 October 2013 14:45

The phase difference between voltage and current intensity, when using alternative current (AC), shall be kept as low as possible. It is also called the power factor, and is expressed by the cosine of the angle φ, between the moment when the maximum voltage is got and the moment when the maximum current intensity is delivered. Ideally, this angle should be zero.

Last Updated ( Tuesday, 22 October 2013 06:08 )

October 2013 - About abbreviations of terms in non-destructive testing

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Written by Administrator
Saturday, 14 September 2013 09:56

Once our French/English PT and MT lexicons(1)(2) have been completed by adding the main current abbreviations of terms used, we found out that there are much more abbreviations in English than in French.

We may wonder why.
Would French people be lacking some imagination or inventiveness?
We are not far from thinking so, only by reminding us of the reaction of some French Engineers as shown by the following paragraphs.

Last Updated ( Saturday, 14 September 2013 10:13 )

September 2013 - Inspection upon products’ arrival

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Written by Administrator
Saturday, 17 August 2013 06:17

The recent European scandal of the horse meat sold allegedly as beef has shown the current limits of the Quality Assurance and the traceability based only on the review of documents issued by the manufacturers and the suppliers.

With the globalisation of the markets, this trickery has affected many European countries, some manufacturers, many distributors and a huge number of consumers.

The whole system is based on the trust and the reliability that every company puts into its suppliers. Are yearly or more frequent audits sufficient enough to avoid this kind of anomaly?

Last Updated ( Saturday, 17 August 2013 06:29 )

August 2013 - Low-frequency magnetic fields and exposure of users (follow-up)

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Written by Administrator
Friday, 12 July 2013 13:38

This paper follows the one(1) published on our Website, which dealt with the exposure of the MT operators to the low- frequency magnetic fields, according to the European Union regulations.

A new Directive of the European Parliament and of the Council released on 26 June 2013(2) has been adopted on the minimum health and safety requirements regarding the exposure of workers against the risks arising from physical agents (electromagnetic fields).

Last Updated ( Friday, 23 August 2013 05:42 )

July 2013 - Sam Robinson passed away

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Written by Administrator
Saturday, 15 June 2013 08:58

A Bit of Sad News

From time to time we are reminded that the NDT industry, or business, consists of people, as well as specifications, companies, test methods, products, and other technical or material subjects that make up our daily lives. When things happen that impact us as friends, acquaintances, or business associates, the PENETRANT PROFESSOR makes note of them. So it is with sadness that we report that our good friend, business associate, ASNT mover and shaker, and NDT luminary, Sam Robinson, has died from cancer.

Last Updated ( Saturday, 15 June 2013 09:08 )

June 2013 - Penetrant testing and test panels: The "masters" and their future

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Written by Administrator
Sunday, 12 May 2013 10:38

Many specifications, in the aerospace industry, require that PT process lines be checked every shift, every day, every time they are put in service, etc.

This PT process line check, which is called the system performance(1) or penetrant system performance(2), shall be performed using test panels or any known defect standards. Any discrepancy in the appearance of the indications and/or of the background shall be a cause for concern.

Last Updated ( Sunday, 12 May 2013 10:48 )

May 2013 - About the thixotropic penetrant materials

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Written by Administrator
Friday, 12 April 2013 10:27

Thixotropic liquid penetrant products are mentioned in several of our papers(1)(2)(3).
These penetrant materials were invented by the British Norman Henry HYAM (1918-2000) who filed a patent in 1973 (4), and have been placed on the market this same year(5).

However, we are surprised that they still seem rather unknown by some people who think that these penetrant materials have a non-negligible impact on the environment.

Last Updated ( Friday, 12 April 2013 11:00 )
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