Evolution of modern NDT-methods for the inspection of lightweight components
- NDT is a multidisciplinary research area fusing the disciplines of natural Science and engineering. Particularly in the early development stages of a new testing method, feasibility investigations focus on the fundamental physical interaction between the sensing mechanism and specimen. Research activities during subsequent phases of modular prototype development, technical System Integration and Validation primarily attempt to solve the practical engineering and real-life aspects of a testing method. We show several examples of new methods in different stages of development and highlight the potential for further industrial use. The first section deals with Steel surfaces of lightweight components which are inspected with pm-sized magneto resistive sensor arrays. This quantitative magnetic stray field approach combines high spatial resolution and very high sensitivity, enabling the user to detect even very small micro-defects. Tuming to CFRP components we also show new developmentsNDT is a multidisciplinary research area fusing the disciplines of natural Science and engineering. Particularly in the early development stages of a new testing method, feasibility investigations focus on the fundamental physical interaction between the sensing mechanism and specimen. Research activities during subsequent phases of modular prototype development, technical System Integration and Validation primarily attempt to solve the practical engineering and real-life aspects of a testing method. We show several examples of new methods in different stages of development and highlight the potential for further industrial use. The first section deals with Steel surfaces of lightweight components which are inspected with pm-sized magneto resistive sensor arrays. This quantitative magnetic stray field approach combines high spatial resolution and very high sensitivity, enabling the user to detect even very small micro-defects. Tuming to CFRP components we also show new developments in airbome ultrasonic testing. Here we use ferroelectret foils to reduce the acoustical mismatch between transducer and air, which enhances the signal-to-noise ratio. A further example illuminates the use of metallic nano layers as a broadband thermo acoustical emitter. Their use provides both high sound pressures and very broadband Signal characteristics. When it comes to CFRP components and other anisotropic and highly Scattering materials, ultrasonic matrix arrays in conjunction with many angles of incidences per transducer position can help to enhance the statistics of a testing problem. In the field of conventional water-coupled UT testing we also show the use of matrix array transducers providing a tomographic-like 3D-image of impact damage in CFRP samples.…
Autor*innen: | Marc Kreutzbruck, Matthias Pelkner, Mate GaalORCiD, Maxim Daschewski, Daniel Brackrock |
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Dokumenttyp: | Beitrag zu einem Tagungsband |
Veröffentlichungsform: | Verlagsliteratur |
Sprache: | Englisch |
Titel des übergeordneten Werkes (Englisch): | 12th International conference of the Slovenian society for non-destructive testing - Application of contemporary non-destructive testing in engineering (Proceedings) |
Jahr der Erstveröffentlichung: | 2013 |
Herausgeber (Institution): | The Slovenian society for non-destructive testing and faculty of mechanical engineering |
Erste Seite: | 303 |
Letzte Seite: | 314 |
Freie Schlagwörter: | Air coupled ultrasonics; GMR-sensors arrays; Matrix arrays; Thermo acoustical transducers |
Veranstaltung: | 12th International conference of the Slovenian society for non-destructive testing - Application of contemporary non-destructive testing in engineering |
Veranstaltungsort: | Portoroz, Slovenia |
Beginndatum der Veranstaltung: | 04.09.2013 |
Enddatum der Veranstaltung: | 06.09.2013 |
ISBN: | 978-961-93537-0-7 |
Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
Datum der Freischaltung: | 20.02.2016 |
Referierte Publikation: | Nein |