Fraunhofer-Gesellschaft

Publica

Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

Characterization of miniaturized tensile specimens using micromagnetic techniques

 
: Rösner, H.; Meyendorf, N.

Meyendorf, N.; Baaklini, G.Y.; Michel, B. ; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.:
Nondestructive evaluation and reliability of micro- and nanomaterial systems : 18 - 19 March 2002, San Diego, USA
Bellingham/Wash.: SPIE, 2002 (SPIE Proceedings Series 4703)
ISBN: 0-8194-4451-0
S.146-153
Conference "Nondestructive Evaluation and Reliability of Micro- and Nanomaterial Systems" <2002, Newport Beach/Calif.>
Englisch
Konferenzbeitrag
Fraunhofer IZFP ()
Barkhausen noise; mini tensile specimen; size effect; machining; cross correlation; surface characterization; depth profiling; eddy current; microcracks

Abstract
Miniaturized dogbone tensile specimens are used to determine mechanical properties when only a small amount of material is available. Because of the high surface to volume ratio, surface finishing becomes critical for specimens with diameters less than 2 mm. Barkhausen noise technique was used to characterize the machined surfaces of small diameter tensile specimens. Full surface scans were conducted using a new magnetization technique. The Barkhausen noise profile curves for several different analyzing frequencies were compared to those obtained on electro-polished specimens using correlation techniques in order to characterize the penetration depth of the surface treatment.

: http://publica.fraunhofer.de/dokumente/N-10050.html