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
New materials: Growing polymer pelts
19.11.2018 | Karlsruher Institut für Technologie (KIT)
Why geckos can stick to walls
19.11.2018 | Jacobs University Bremen gGmbH
Researchers at the University of New Hampshire have captured a difficult-to-view singular event involving "magnetic reconnection"--the process by which sparse particles and energy around Earth collide producing a quick but mighty explosion--in the Earth's magnetotail, the magnetic environment that trails behind the planet.
Magnetic reconnection has remained a bit of a mystery to scientists. They know it exists and have documented the effects that the energy explosions can...
Biochips have been developed at TU Wien (Vienna), on which tissue can be produced and examined. This allows supplying the tissue with different substances in a very controlled way.
Cultivating human cells in the Petri dish is not a big challenge today. Producing artificial tissue, however, permeated by fine blood vessels, is a much more...
Faster and secure data communication: This is the goal of a new joint project involving physicists from the University of Würzburg. The German Federal Ministry of Education and Research funds the project with 14.8 million euro.
In our digital world data security and secure communication are becoming more and more important. Quantum communication is a promising approach to achieve...
On Saturday, 10 November 2018, the research icebreaker Polarstern will leave its homeport of Bremerhaven, bound for Cape Town, South Africa.
When choosing materials to make something, trade-offs need to be made between a host of properties, such as thickness, stiffness and weight. Depending on the application in question, finding just the right balance is the difference between success and failure
Now, a team of Penn Engineers has demonstrated a new material they call "nanocardboard," an ultrathin equivalent of corrugated paper cardboard. A square...
19.11.2018 | Event News
09.11.2018 | Event News
06.11.2018 | Event News
20.11.2018 | Life Sciences
20.11.2018 | Life Sciences
20.11.2018 | Ecology, The Environment and Conservation