Abstract
It is known, that the permeability of ferromagnetic substances is also dependent on the mechanical stress. Based on this theory, there is a method called "stress-dependent magnetic flux leakage". This is a method, which is usually used to detect defects in iron and steel. But the question is, if there is a way to detect mechanical stress in a ferromagnetic material?
With the modern magnetic sensor, we are able to explore magnetic flux densities down to about 50 nT. That makes us also able to find the tiny difference magnetic flux density, due to mechanical stress.
In this project, we will use a GMR (Giant Magneto Resistance)-magnetometer as a magnetic sensor. Some experiments are made to see if it is possible to determinate the area with different mechanical stress.
| Translated title of the contribution | Measurement of mechanical stresses in ferromagnetic materials on the analysis of magnetic anomalies |
|---|---|
| Original language | German (Austria) |
| Publication status | Published - Sept 2012 |
Fields of science
- 101014 Numerical mathematics
- 102005 Computer aided design (CAD)
- 102003 Image processing
- 202012 Electrical measurement technology
- 202039 Theoretical electrical engineering
- 202037 Signal processing
- 203016 Measurement engineering
JKU Focus areas
- Mechatronics and Information Processing