Translator Disclaimer
Paper
7 April 2009 High frequency eddy current device for near surface material characterizations
Author Affiliations +
Abstract
For near surface characterization a new high frequency eddy current device was been developed. By using a measurement frequency up to 100 MHz information of near surface areas can be acquired. Depending on the investigated material high resolution depth profiles can be derived. The obtained data with the new device were compared to those obtained with a high precision impedance analyser. It could be demonstrated that the new device measures the eddy current conductivity signal in the high frequencies much better than the impedance analyser. By sweeping the frequency from 100 kHz up to 100 MHz the technique delivers a depth profile of the electrical conductivity of the material. This kind of high frequency eddy current technique can be used for quality assurance, surface contamination control or near surface material characterization e.g. microstructure and cold work influences. It can be a powerful tool to obtain information for process control or a good / bad decision in mass production processes like for example rolling, coating, and surface treatments. The big advantage of the high frequency eddy current method is that it is fast und precise. This paper presents results with a new developed prototype Eddy-Current-Device for measurement frequencies up to 100 MHz which is first time suitable in rough industrial environment and makes expensive lab network analysers unnecessary for this kind of investigations.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
S. Hillmann, H. Heuer, and N. Meyendorf "High frequency eddy current device for near surface material characterizations", Proc. SPIE 7293, Smart Sensor Phenomena, Technology, Networks, and Systems 2009, 72930S (7 April 2009); https://doi.org/10.1117/12.815455
PROCEEDINGS
9 PAGES


SHARE
Advertisement
Advertisement
RELATED CONTENT

Optical fabrication of lightweighted 3D printed mirrors
Proceedings of SPIE (September 02 2015)
Advanced laser micro welding by pulse control new welding...
Proceedings of SPIE (October 08 2004)
Rapid tooling from protoypes the cool spray mold making...
Proceedings of SPIE (October 09 1998)
Materials delivery challenges in ULSI processing
Proceedings of SPIE (September 19 1995)
Materials Characterization By Thermographic Imaging
Proceedings of SPIE (March 20 1985)

Back to Top