The Fraunhofer Institute for Nondestructive Testing IZFP carries out research and development activities in the field of nondestructive testing processes along the entire materials value chain. For customers in the automobile, aerospace, rail, energy, construction and agriculture industries, the institute offers a wide range of NDT expertise and technologies. At the 19th World Conference on Non-Destructive Testing, our researchers will be presenting a nondestructive micromagnetic materials characterization method by means of a variant of 3MA approach - the so-called 3MA-X8.
Iron and steel parts, as well as components used in machines, vehicles and plant engineering are often made of ferromagnetic materials. These components are heat-treated and machined in order to create the desired functional characteristics.
Determination of the quality of the surface layer properties requires suitable inspection methods. Micromagnetic methods offer a fast and nondestructive way to characterize and analyze materials properties during or directly after a production step with up to 100 percent process integration.
3MA is an acronym for "micromagnetic multiparameter, microstructure and stress analysis". The 3MA measuring systems of Fraunhofer IZFP determine, in fractions of a second, different material properties, e.g. hardness, case hardening depth.
In addition, a variety of other magnetic parameters is determined which reflect different material properties and stress states. The 3MA method determines the relationship between the magnetic characteristics measured and desired result parameters (e.g. hardness, case depth, tensile strength, yield strength, residual stresses) on the basis of a defined calibration sample set.
This is done using mathematical-statistical tools such as pattern recognition and regression analysis. Finally, an application of the calibration in order to inspect the calibrated component, finished and semi-finished product types is possible.
The 3MA-X8 measuring system implements the 3MA approach with particular emphasis on the possibility of a simple calibration, very high measuring speed and variable sensor design. In addition, simultaneous operation of up to eight sensors is possible with a device to cover several measuring positions or accelerate surface scans.
The application potential of this 3MA variant is discussed in this contribution regarding different application examples, and a comparison with the original 3MA approach is provided.
Sabine Poitevin-Burbes | Fraunhofer-Institut für Zerstörungsfreie Prüfverfahren IZFP
Meter-sized single-crystal graphene growth becomes possible
22.08.2017 | Science China Press
Nagoya physicists resolve long-standing mystery of structure-less transition
21.08.2017 | Nagoya University
Whether you call it effervescent, fizzy, or sparkling, carbonated water is making a comeback as a beverage. Aside from quenching thirst, researchers at the University of Illinois at Urbana-Champaign have discovered a new use for these "bubbly" concoctions that will have major impact on the manufacturer of the world's thinnest, flattest, and one most useful materials -- graphene.
As graphene's popularity grows as an advanced "wonder" material, the speed and quality at which it can be manufactured will be paramount. With that in mind,...
Physicists at the University of Bonn have managed to create optical hollows and more complex patterns into which the light of a Bose-Einstein condensate flows. The creation of such highly low-loss structures for light is a prerequisite for complex light circuits, such as for quantum information processing for a new generation of computers. The researchers are now presenting their results in the journal Nature Photonics.
Light particles (photons) occur as tiny, indivisible portions. Many thousands of these light portions can be merged to form a single super-photon if they are...
For the first time, scientists have shown that circular RNA is linked to brain function. When a RNA molecule called Cdr1as was deleted from the genome of mice, the animals had problems filtering out unnecessary information – like patients suffering from neuropsychiatric disorders.
While hundreds of circular RNAs (circRNAs) are abundant in mammalian brains, one big question has remained unanswered: What are they actually good for? In the...
An experimental small satellite has successfully collected and delivered data on a key measurement for predicting changes in Earth's climate.
The Radiometer Assessment using Vertically Aligned Nanotubes (RAVAN) CubeSat was launched into low-Earth orbit on Nov. 11, 2016, in order to test new...
A study led by scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg presents evidence of the coexistence of superconductivity and “charge-density-waves” in compounds of the poorly-studied family of bismuthates. This observation opens up new perspectives for a deeper understanding of the phenomenon of high-temperature superconductivity, a topic which is at the core of condensed matter research since more than 30 years. The paper by Nicoletti et al has been published in the PNAS.
Since the beginning of the 20th century, superconductivity had been observed in some metals at temperatures only a few degrees above the absolute zero (minus...
16.08.2017 | Event News
04.08.2017 | Event News
26.07.2017 | Event News
22.08.2017 | Health and Medicine
22.08.2017 | Materials Sciences
22.08.2017 | Life Sciences