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Nondestructive materials characterization and testing of casting materials

: Veile, Ines; Tschuncky, Ralf; Weikert-Müller, Miriam; Bruche, Dietmar; Weber, Fabian; Kopp, Melanie; Szielasko, Klaus

Fulltext urn:nbn:de:0011-n-4150981 (3.0 MByte PDF)
MD5 Fingerprint: 58260dfc6d852d1e295326f2f7bc74ec
Created on: 1.10.2016

Sharp, R. ; The British Institute of Non-Destructive Testing -BINDT-, Northampton:
NDT 2016 Conference. CD-ROM : 55th Annual British Conference of Non-Destructive Testing, 11-14 September 2016, Northampton
Northhampton: BINDT, 2016
Paper 4A1, 11 pp.
Conference of Non-Destructive Testing (NDT) <55, 2016, Northampton>
Conference Paper, Electronic Publication
Fraunhofer IZFP ()

Casting materials are used whenever highest standards are requested regarding the mechanical properties of the component and the complexity of the component design. As the production of casting workpieces is relatively expensive, maximum utilization of the material is sought for. Nevertheless, the occurrence of defects and discontinuities inside the casting as well as the formation of dross or other defects at the casting surface cannot be completely excluded. These production-related defects lead to local degradation of material properties. A precise localization and characterization of the defects found is advantageous because it allows for either an efficient post-processing or at least an estimation of the fracture-mechanical consequences of defects that can make a post-processing expendable. In both cases, nondestructive testing (NDT) results in cost and material savings, sometimes even to a large extent. In addition, NDT can be used for quality control after post-processing or for the characterization of the raw material. For this purpose, Fraunhofer IZFP develops innovative nondestructive testing systems on the basis of ultrasound, X-ray, magnetic flux leakage and micromagnetic methods, which can be applied to components of different scales and different casting types (iron, steel, aluminium, etc.). The following paper exemplarily presents four current projects at IZFP dealing with aspects of the described issues.