Development of electromagnetic NDT methods for structural integrity assessment
| Autor: | Orest Ostash, Valentyn Uchanin |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
business.industry 02 engineering and technology Structural engineering Welding Paris' law Coercivity 021001 nanoscience & nanotechnology Residual law.invention Lift (force) 020303 mechanical engineering & transports 0203 mechanical engineering law Nondestructive testing Eddy current 0210 nano-technology business Material properties Earth-Surface Processes |
| Zdroj: | Procedia Structural Integrity. 16:192-197 |
| ISSN: | 2452-3216 |
| DOI: | 10.1016/j.prostr.2019.07.040 |
| Popis: | Nondestructive testing (NDT) methods are widely used for inspection of long term exploited structures as important part of maintenance strategy. NDT methods can create the background for material optimization under the engineering procedures (e.g., welding) influence also. Principal attention taken into consideration is the investigation of the correlations between measured nondestructively material properties (e.g., specific electrical conductivity, coercive force) and parameters of fatigue crack growth resistance (FCGR) needed for residual life estimation. In this study the evaluation of aluminum alloys (AA) degradation in aging aircraft and AA welded joints characterization based on the specific electrical conductivity (SEC) measurements are presented. Eddy current (EC) device for local noncontact SEC with lift off suppression was developed. For ferrous steel components (steam pipelines, ship bearing elements) the NDT method based on coercive force (CF) measurements by attachable type probes are applied. The EC method based on the magnetic anisotropy (MA) changes under mechanical stress was proposed. |
| Databáze: | OpenAIRE |
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