| Autor: |
D. A. Galdin, E. A. Vyachkina, S. O. Kozelskaya, O. N. Budadin, V. O. Kaledin |
| Rok vydání: |
2019 |
| Předmět: |
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| Zdroj: |
Kontrol'. Diagnostika. :22-27 |
| ISSN: |
0201-7032 |
| DOI: |
10.14489/td.2019.08.pp.022-027 |
| Popis: |
A new control technology for electrically conductive composite materials (electric power thermography) is proposed, based on the excitation of a thermal field in the defect area (cracks) by passing an electric current with simultaneous application of a power load, which makes it possible to detect “stuck” cracks in composite materials using rather simple technical means. Theoretical and experimental studies have shown the possibility of identifying delaminations and cracks in the grids of a complex structure of composite materials using electrodiagnosis with temperature field measurement. The resulting temperature anomalies in the process of monitoring the proposed method (electric power thermography) reach a value of several degrees (regardless of the initial characteristics of cracks – before the application of a power load), which allows you to record temperature fields with quite simple and, therefore, cheap thermographic devices. The applied power load to the monitored product can be carried out simultaneously with the workload of the product, which allows them to be monitored in the process of strength power-producing tests. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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