Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Noncontact and contamination-free materials inspection – hybrid materials easily tested

18.02.2015

In various industries such as automotive industry, aircraft or steel construction failures in the final product can quickly lead to malfunction and, as a result, can massively compromise the operational reliability. Thus, nondestructive testing methods will play a key role in the quality assurance because they allow to inspect components and parts without destroying them.

From 10 to 12 March 2015, at the JEC Europe in Paris, engineers of Fraunhofer IZFP in Saarbrücken will introduce a novel procedure which enables noncontact and contamination-free defect inspection even in case of strongly absorbing hybrid materials (hall 7.2, booth F35).


Air-coupled ultrasound: An industrial robot linked to an ultrasound inspection system scans the component.

Copyright: Uwe Bellhäuser

They are not ascertainable by the naked eye – nevertheless minute cracks or defects, particularly in safety-critical sectors, can cause disastrous consequences. Notwithstanding this the requests for weight reduction without materials impairment steadily increase.

In order to meet such requirement profiles, the use of new materials – such as carbon or glass fiber-reinforced plastics (CFRP, GFRP), high-strength steels and light metals, often also in combination for hybrids applications – is indispensable.

Researchers at Fraunhofer Institute for Nondestructive Testing IZFP in Saarbrücken succeeded in enhancing the use of air-coupled ultrasound as a nondestructive inspection method for noncontact and contamination-free materials inspection. “The probes we developed at our institute to examine thin materials allow higher frequency compared to competing products. Due to this improvement a highly sensitive and optimized defect detection capability is achieved," Dr. Thomas Waschkies, responsible engineer at Fraunhofer IZFP, explains.

"The improved probe design with its higher noise allows the contamination-free examination even of strongly absorbing hybrid materials." In particular the lower inspection frequencies are important for the examination of these materials – which in general can´t be examined in immersion technique - since at lower frequencies the attenuation of sound in the material is much lower than in case of conventional testing.

Each inspection application comes with its specific requirements concerning accessibility, defect resolution, robustness against environmental influences and special probe type. That’s why Fraunhofer IZFP’s air-coupled ultrasound transducers are custom-made for a particular application.

"The air-coupled ultrasound inspection is particularly suitable for the examination of thin plates with thicknesses of some few centimeters. However, in principle all materials currently used in modern structural components, e. g., in automotive industry or aircraft, can be examined," Waschkies says. Often, these so-called ‘new materials’, such as CFRP, GFRP, high strength steels and light metals, are combined and processed to hybrid components or parts.

At this year's JEC Europe in Paris, beside of demonstrating and explaining the principle functionality of this inspection method, Fraunhofer IZFP will give indications for applications in many industrial sectors.

Weitere Informationen:

http://www.izfp.fraunhofer.de

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

More articles from Trade Fair News:

nachricht Fraunhofer HHI with latest VR technologies at NAB in Las Vegas
24.04.2017 | Fraunhofer-Institut für Nachrichtentechnik, Heinrich-Hertz-Institut, HHI

nachricht Kiel nano research at the Hannover Messe
21.04.2017 | Christian-Albrechts-Universität zu Kiel

All articles from Trade Fair News >>>

The most recent press releases about innovation >>>

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

Im Focus: Making lightweight construction suitable for series production

More and more automobile companies are focusing on body parts made of carbon fiber reinforced plastics (CFRP). However, manufacturing and repair costs must be further reduced in order to make CFRP more economical in use. Together with the Volkswagen AG and five other partners in the project HolQueSt 3D, the Laser Zentrum Hannover e.V. (LZH) has developed laser processes for the automatic trimming, drilling and repair of three-dimensional components.

Automated manufacturing processes are the basis for ultimately establishing the series production of CFRP components. In the project HolQueSt 3D, the LZH has...

Im Focus: Wonder material? Novel nanotube structure strengthens thin films for flexible electronics

Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.

"The structural robustness of thin metal films has significant importance for the reliable operation of smart skin and flexible electronics including...

Im Focus: Deep inside Galaxy M87

The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.

Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...

Im Focus: A Quantum Low Pass for Photons

Physicists in Garching observe novel quantum effect that limits the number of emitted photons.

The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...

Im Focus: Microprocessors based on a layer of just three atoms

Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.

Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Fighting drug resistant tuberculosis – InfectoGnostics meets MYCO-NET² partners in Peru

28.04.2017 | Event News

Expert meeting “Health Business Connect” will connect international medical technology companies

20.04.2017 | Event News

Wenn der Computer das Gehirn austrickst

18.04.2017 | Event News

 
Latest News

Wireless power can drive tiny electronic devices in the GI tract

28.04.2017 | Medical Engineering

Ice cave in Transylvania yields window into region's past

28.04.2017 | Earth Sciences

Nose2Brain – Better Therapy for Multiple Sclerosis

28.04.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>