Blog : What's new ?

You are interested in the use of EMAT probe for the ultrasonic inspection of ferromagnetic materials? Have a look at this new scientific publication from CEA and EXTENDE in Ultrasonics journal about the "Mechanisms of elastic wave generation by EMAT in ferromagnetic media"!

This paper deals with the elastic wave generation mechanisms induced by an electromagnetic-acoustic transducer (EMAT) in ferromagnetic materials. In conductive materials, Lorentz forces are only responsible for the ultrasounds transmitted by an EMAT (current limitation of CIVA software). But some magnetization and magnetostriction effects have to be accounted for when operating ferromagnetic materials inspection. Moreover, the impact of these various transduction mechanisms strongly depends on the EMAT design and on the ferromagnetic properties of the inspected part. Thus, modeling such complex transduction effects is of paramount importance when designing an EMAT inspection, and this paper offers a generic model that can be integrated into various numerical tools (such as CIVA software) to help optimize EMAT design and give reliable data interpretation.

If you are interested in this topic, impatient for such a model to be integrated in CIVA software, or keen to share with us your experience / interest in EMAT inspection, please do not hesitate to contact us!

The EXTENDE team.

As part of our commitment to environmental sustainability, we are certified in accordance with ISO 14001:2004. Thus, we monitor our environmental impacts and try to reduce them. For impacts related to travels (visits to customers, training courses, conferences) that are difficult to reduce without damaging our business, so we act through carbon contribution.

We have contributed up to 100% of our travels emissions of year 2022 by funding the project "Escaping energy poverty in the Provence-Alpes-Côte d'Azur region" by the Geres association. You can find more details about this project on their website and in this document.

Set up in 1976, Geres is a development NGO working in Europe, Africa and Asia to improve living conditions and fight against climate change and its impacts. As a field player, energy transition is a major lever in their action in favor of greater climate solidarity.

The EXTENDE team.