Non-destructive scanning for applied stress by the continuous magnetic Barkhausen noise method
| Autor: | Freddy Armando Franco Grijalba, Linilson Rodrigues Padovese |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Materials science Frequency band business.industry Acoustics Time signal Bending Condensed Matter Physics 01 natural sciences Electronic Optical and Magnetic Materials Magnetic field Stress (mechanics) Moment (mathematics) Nondestructive testing 0103 physical sciences business 010301 acoustics Smoothing |
| Zdroj: | Journal of Magnetism and Magnetic Materials. 446:231-238 |
| ISSN: | 0304-8853 |
| DOI: | 10.1016/j.jmmm.2017.09.036 |
| Popis: | This paper reports the use of a non-destructive continuous magnetic Barkhausen noise technique to detect applied stress on steel surfaces. The stress profile generated in a sample of 1070 steel subjected to a three-point bending test is analyzed. The influence of different parameters such as pickup coil type, scanner speed, applied magnetic field and frequency band analyzed on the effectiveness of the technique is investigated. A moving smoothing window based on a second-order statistical moment is used to analyze the time signal. The findings show that the technique can be used to detect applied stress profiles. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect