TY - CONF A1 - Stegemann, Robert A1 - Sonntag, Nadja A1 - Kreutzbruck, Marc A1 - Skrotzki, Birgit ED - Brune, M. ED - Buffière, J.Y. ED - Morel, F. ED - Nadot, Y. T1 - Self-magnetic-leakage field detection using magneto-optical sensor technique T2 - FDMDII-JIP 2014 - 14th International spring meeting - MATEC Web of conferences (Proceedings) N2 - Measurement of spontaneous magnetic stray field signals has been reported to be a promising tool for capturing macro-scale information of deformation states, defects and stress concentration zones in a material structure. This paper offers a new method for self-magnetic leakage field detection using a magneto-optical (MO) hand-held microscope. Its sensor has a dynamic field range between ±0.05 and ±2 kA/m and a lateral optical resolution of approx. 10 µm. We examined flat tensile test specimens of metastable austenitic steel AISI 304. Static tensile tests were repeatedly interrupted at various predetermined states of strain and the magnetic information was measured by the MO system. Comparative measurements using a high-precision magnetic field GMR-sensor, verify the outstanding capability of the MO microscope regarding spatial resolution of magnetic fields. T2 - FDMDII-JIP 2014 - 14th International spring meeting CY - Paris, France DA - 06.11.2014 KW - Magneto-optical sensor KW - Metal magnetic memory KW - GMR KW - NDT PY - 2014 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-326911 SN - 978-2-7598-1274-5 DO - https://doi.org/10.1051/matecconf/20141204010 N1 - Serientitel: Materials science, Engineering and Chemistry – Series title: Materials science, Engineering and Chemistry VL - 12 SP - 04010-1 EP - 04010-3 PB - EDP Sciences AN - OPUS4-32691 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -