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
Spider silk key to new bone-fixing composite
20.04.2018 | University of Connecticut
Diamond-like carbon is formed differently to what was believed -- machine learning enables development of new model
19.04.2018 | Aalto University
University of Connecticut researchers have created a biodegradable composite made of silk fibers that can be used to repair broken load-bearing bones without the complications sometimes presented by other materials.
Repairing major load-bearing bones such as those in the leg can be a long and uncomfortable process.
Study published in the journal ACS Applied Materials & Interfaces is the outcome of an international effort that included teams from Dresden and Berlin in Germany, and the US.
Scientists at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) together with colleagues from the Helmholtz-Zentrum Berlin (HZB) and the University of Virginia...
Novel highly efficient and brilliant gamma-ray source: Based on model calculations, physicists of the Max PIanck Institute for Nuclear Physics in Heidelberg propose a novel method for an efficient high-brilliance gamma-ray source. A giant collimated gamma-ray pulse is generated from the interaction of a dense ultra-relativistic electron beam with a thin solid conductor. Energetic gamma-rays are copiously produced as the electron beam splits into filaments while propagating across the conductor. The resulting gamma-ray energy and flux enable novel experiments in nuclear and fundamental physics.
The typical wavelength of light interacting with an object of the microcosm scales with the size of this object. For atoms, this ranges from visible light to...
Stable joint cartilage can be produced from adult stem cells originating from bone marrow. This is made possible by inducing specific molecular processes occurring during embryonic cartilage formation, as researchers from the University and University Hospital of Basel report in the scientific journal PNAS.
Certain mesenchymal stem/stromal cells from the bone marrow of adults are considered extremely promising for skeletal tissue regeneration. These adult stem...
In the fight against cancer, scientists are developing new drugs to hit tumor cells at so far unused weak points. Such a “sore spot” is the protein complex...
13.04.2018 | Event News
12.04.2018 | Event News
09.04.2018 | Event News
20.04.2018 | Physics and Astronomy
20.04.2018 | Interdisciplinary Research
20.04.2018 | Physics and Astronomy