Nondestructive material testing (NDT) is a fast and effective way to analyze the quality of a product during the manufacturing process. Because defective materials can lead to malfunctioning finished products, NDT is an essential quality assurance measure, especially in the manufacture of safety-critical components such as automotive B-pillars. NDT examines the quality without damaging the component or modifying the surface of the material. At this year's Blechexpo trade fair in Stuttgart, Fraunhofer IZFP will have an exhibit that demonstrates the nondestructive testing of high-strength automotive body parts using 3MA. The measurement results are available in a matter of seconds.
To minimize vehicle weight and fuel consumption while providing the highest level of crash safety, automotive bodies are reinforced with elements made from high-strength steel. Automotive manufacturers and suppliers are relying more and more on so-called hot stamping or press hardened processes to produce these components.
Fraunhofer IZFP has developed a fast and low-cost 3MA nondestructive testing technique that can be used to monitor and control the corresponding manufacturing processes. "Time-consuming destructive testing methods result in enormous quality assurance costs, because among things the product is destroyed in the process.
And since it's only possible to carry out spot checks, problems with the manufacturing process are often detected only after a significant number of rejects are generated," says Dr. Bernd Wolter, head of the Production-integrated NDT department at Fraunhofer IZFP. Suitable nondestructive testing processes offer an alternative that over the long term can be adapted and utilized as a replacement for destructive methods.
The 3MA inspection technology developed by Fraunhofer IZFP is well-suited for measuring positions that cannot be inspected with destructive processes, such as when there is simply no space to carry out the measurements (tension rods as an example).
"We can ensure 100 percent testability during the production process. That eliminates the need for time-consuming spot checks. Our researchers and engineers developed and certified this inspection method for use in high-volume automobile production systems. This inline, nondestructive process can be automated, a feature that is clearly to unique to Fraunhofer IZFP," emphasizes Wolter.
By combining four micro-magnetic inspection processes - harmonic analysis, incremental permeability, Barkhausen noise analysis and multi-frequency eddy current - this approach provides a fast and simple way to determine the quality of essential mechanical properties such as hardness, tensile strength and diffusion layer thickness.
The exhibit will illustrate several specific capabilities related to the monitoring and inspecting of manufacturing processes, press-hardened products, valve spring production and rolled steel manufacture, with a focus on production processes in the automobile, steel production and machine/plant engineering industries.
Sabine Poitevin-Burbes | Fraunhofer-Institut für Zerstörungsfreie Prüfverfahren IZFP
Detecting damage in non-magnetic steel with the help of magnetism
23.07.2018 | Johannes Gutenberg Universitaet Mainz
Princeton-UPenn research team finds physics treasure hidden in a wallpaper pattern
20.07.2018 | Princeton University
A new manufacturing technique uses a process similar to newspaper printing to form smoother and more flexible metals for making ultrafast electronic devices.
The low-cost process, developed by Purdue University researchers, combines tools already used in industry for manufacturing metals on a large scale, but uses...
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...
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...
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...
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....
13.07.2018 | Event News
12.07.2018 | Event News
03.07.2018 | Event News
23.07.2018 | Materials Sciences
23.07.2018 | Information Technology
23.07.2018 | Health and Medicine