Investigation into the depth of pulsed eddy-current penetration A. Sather
- Format:
-
- Author/Creator:
-
- Contributor:
-
- Language:
- English
- Subjects (All):
-
- Physical Description:
- 1 online resource (13 pages) illustrations, figures, tables
- Place of Publication:
- West Conshohocken, Pa. ASTM International 1981
- Summary:
- Pulsed eddy-currents have been used successfully for a number of years to measure the wall thickness of thin-wall tubing. In studies of 88.9-mm (3.50-in.)-diameter stainless-steel tubing, wall thicknesses in the 0.254 to 0.762 mm (0.010 to 0.030 inches) range have been measured with an accuracy of ±10%. This paper describes an investigation of the relationship between the pulse length and depth of electromagnetic plane-wave penetration. Long pulses contain lower-frequency components than pulses of shorter duration. Therefore, longer pulses will penetrate much more deeply into a conductive material, assuring a 90 percent confidence level in the measurement of thicker materials. The pulsed eddy-current equipment used at Argonne National Laboratory (ANL) employs sampling of the detector waveform at discrete time intervals. Optimization of field-coil design for larger thicknesses of conductive material necessitates an increase in the pulse length. With a preliminary coil design, a penetration of 9 mm into stainless steel was achieved
- Notes:
-
- Includes bibliographical references and indexes
- Online resource; title from publisher's website, viewed February 19, 2016
- Related Work:
- American Society for Testing and Materials. Selected Technical Papers
The Penn Libraries is committed to describing library materials using current, accurate, and responsible language. If you discover outdated or inaccurate language, please fill out this feedback form to report it and suggest alternative language.