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Early detection of damage in thermo-cyclically loaded austenitic materials-development of condition monitoring technology within the context of the aging management

 
: Altpeter, Iris; Tschunky, Ralf; Hällen, K.; Dobmann, Gerd; Boller, Christian; Smaga, Marek; Sorich, Andreas; Eifler, D.

:
Volltext urn:nbn:de:0011-n-2194685 (1.0 MByte PDF)
MD5 Fingerprint: 08ecfd5f166dabf1b10019e47eb3eb25
Erstellt am: 23.5.2015


The British Institute of Non-Destructive Testing -BINDT-, Northampton; Society for Machinery Failure Prevention Technology -MFPT-:
8th International Conference on Condition Monitoring and Machinery Failure Prevention Technologies 2011. Vol. 1 : Cardiff, United Kingdom 20-22 June 2011
Red Hook, NY: Curran, 2011
ISBN: 978-1-61839-014-1
S.1057-1067
International Conference on Condition Monitoring and Machinery Failure Prevention Technologies (CM and MFPT) <8, 2011, Cardiff>
Englisch
Konferenzbeitrag, Elektronische Publikation
Fraunhofer IZFP ()
austenitic steel; electromagnetic-acoustic-transducer; ultrasonic

Abstract
Early detection of damage in cyclically loaded austenitic steel was performed with electromagnetic acoustic transducer measurements in total strain controlled low cycle fatigue tests at ambient and elevated temperature. The application of physically based measurement data, e.g. time of flight from electromagnetically activated ultrasonic signals in austenitic fatigue specimens and total strain, enables measurements of a new hysteresis relationship. This hysteresis gives, in analogy to the stress-strain hysteresis, information about the actual state of fatigue of the austenitic steel and shows significant changes in shape before specimen failure.

: http://publica.fraunhofer.de/dokumente/N-219468.html