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Eddy current characterization of magnetic treatment of materials
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Chern Sr., E. James |
| Copyright Year | 1992 |
| Description | Eddy current impedance measuring methods have been applied to study the effect that magnetically treated materials have on service life extension. Eddy current impedance measurements have been performed on Nickel 200 specimens that have been subjected to many mechanical and magnetic engineering processes: annealing, applied strain, magnetic field, shot peening, and magnetic field after peening. Experimental results have demonstrated a functional relationship between coil impedance, resistance and reactance, and specimens subjected to various engineering processes. It has shown that magnetic treatment does induce changes in a material's electromagnetic properties and does exhibit evidence of stress relief. However, further fundamental studies are necessary for a thorough understanding of the exact mechanism of the magnetic-field processing effect on machine tool service life. |
| File Size | 391924 |
| Page Count | 12 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19930002433 |
| Archival Resource Key | ark:/13960/t0zp8z259 |
| Language | English |
| Publisher Date | 1992-10-01 |
| Access Restriction | Open |
| Subject Keyword | Metallic Materials Service Life Annealing Nickel Alloys Shot Peening Mechanical Engineering Reactance Impedance Measurement Magnetic Materials Machine Tools Magnetic Fields Impedance Eddy Currents Electromagnetic Properties Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
