Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Rapid Detection of Cracks and Corrosion using Magnetic Stray Flux

28.04.2015

Whether it's fallen concrete pylons caused by corroded tension wires, a new motor due to damaged pistons or defective sheet steel, even the tiniest cracks or smallest traces of corrosion can have serious consequences, especially in safety-critical environments.

With magnetic stray flux inspections, these flaws can be quickly visualized without destroying or contaminating the material.


FLUXI: handheld stray flux inspection device (prototype shown)

Fraunhofer IZFP

As an alternative to magnetic powder tests, this method can also be used wherever the magnetic powder approach is unsuitable.

Engineers at Saarbrucken-based Fraunhofer IZFP will be introducing a mobile handheld device for magnetic stray flux testing at the 29th annual CONTROL trade fair in Stuttgart (hall 1, exhibit booth 1502), which runs May 5 to May 8.

Scientists at the Fraunhofer Institute for Nondestructive Testing IZFP in Saarbrucken have developed a handheld, wireless test device called FLUXI which is based on magnetic stray flux technology.

This method relies on the same physical effect exploited by magnetic powder testing, a standard and widely-used inspection process in steel manufacturing.

When an external magnetic field is applied to sharp-edged cracks on the surface of a component, additional magnetic dipoles form, which then induce magnetic leakage near the surface. This stray field can be detected and processed with magnetic field sensors.

The enormous potential for instrument technology miniaturization provides a key advantage since extremely difficult to access areas of the component can be quickly and easily subjected to magnetic stray flux inspections.

With FLUXI, manufactured parts and components can be rapidly scanned, allowing potential surface defects to be displayed as images.

Weitere Informationen:

http://www.izfp.fraunhofer.de

Sabine Poitevin-Burbes | Fraunhofer-Institut für Zerstörungsfreie Prüfverfahren IZFP

More articles from Innovative Products:

nachricht A ski jacket that actively gets rid of sweat
30.01.2018 | Empa - Eidgenössische Materialprüfungs- und Forschungsanstalt

nachricht A fashionable chemical and biological threat detector-on-a-ring
12.10.2017 | American Chemical Society

All articles from Innovative Products >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: First evidence on the source of extragalactic particles

For the first time ever, scientists have determined the cosmic origin of highest-energy neutrinos. A research group led by IceCube scientist Elisa Resconi, spokesperson of the Collaborative Research Center SFB1258 at the Technical University of Munich (TUM), provides an important piece of evidence that the particles detected by the IceCube neutrino telescope at the South Pole originate from a galaxy four billion light-years away from Earth.

To rule out other origins with certainty, the team led by neutrino physicist Elisa Resconi from the Technical University of Munich and multi-wavelength...

Im Focus: Magnetic vortices: Two independent magnetic skyrmion phases discovered in a single material

For the first time a team of researchers have discovered two different phases of magnetic skyrmions in a single material. Physicists of the Technical Universities of Munich and Dresden and the University of Cologne can now better study and understand the properties of these magnetic structures, which are important for both basic research and applications.

Whirlpools are an everyday experience in a bath tub: When the water is drained a circular vortex is formed. Typically, such whirls are rather stable. Similar...

Im Focus: Breaking the bond: To take part or not?

Physicists working with Roland Wester at the University of Innsbruck have investigated if and how chemical reactions can be influenced by targeted vibrational excitation of the reactants. They were able to demonstrate that excitation with a laser beam does not affect the efficiency of a chemical exchange reaction and that the excited molecular group acts only as a spectator in the reaction.

A frequently used reaction in organic chemistry is nucleophilic substitution. It plays, for example, an important role in in the synthesis of new chemical...

Im Focus: New 2D Spectroscopy Methods

Optical spectroscopy allows investigating the energy structure and dynamic properties of complex quantum systems. Researchers from the University of Würzburg present two new approaches of coherent two-dimensional spectroscopy.

"Put an excitation into the system and observe how it evolves." According to physicist Professor Tobias Brixner, this is the credo of optical spectroscopy....

Im Focus: Chemical reactions in the light of ultrashort X-ray pulses from free-electron lasers

Ultra-short, high-intensity X-ray flashes open the door to the foundations of chemical reactions. Free-electron lasers generate these kinds of pulses, but there is a catch: the pulses vary in duration and energy. An international research team has now presented a solution: Using a ring of 16 detectors and a circularly polarized laser beam, they can determine both factors with attosecond accuracy.

Free-electron lasers (FELs) generate extremely short and intense X-ray flashes. Researchers can use these flashes to resolve structures with diameters on the...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Leading experts in Diabetes, Metabolism and Biomedical Engineering discuss Precision Medicine

13.07.2018 | Event News

Conference on Laser Polishing – LaP: Fine Tuning for Surfaces

12.07.2018 | Event News

11th European Wood-based Panel Symposium 2018: Meeting point for the wood-based materials industry

03.07.2018 | Event News

 
Latest News

Global study of world's beaches shows threat to protected areas

19.07.2018 | Earth Sciences

New creepy, crawly search and rescue robot developed at Ben-Gurion U

19.07.2018 | Power and Electrical Engineering

Metal too 'gummy' to cut? Draw on it with a Sharpie or glue stick, science says

19.07.2018 | Materials Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>