Abstract
Free oscillation technique (FOT) is widely used for research and diagnostics of fatigue cracks in metal parts, for revealing former in bolted and rivet joints etc. The main criteria for mechanical state evaluation using FOT is shift of natural frequency maxima in Fourier spectrum toward lower frequencies with increasing size of discontinuity. In this work with use of designed software for wavelet-analysis of 1D signals fatigue fracture of structural steel was investigated. The main informative features of wavelet-spectra used under FOT diagnostics are discussed. It is shown that consideration of wavelet-spectrum changes over frequency and time ranges allows increasing significantly reliability of diagnostics.
| Original language | English |
|---|---|
| Title of host publication | Proceedings - KORUS 2003 |
| Subtitle of host publication | 7th Korea-Russia International Symposium on Science and Technology |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| Pages | 231-236 |
| Number of pages | 6 |
| Volume | 1 |
| ISBN (Electronic) | 8978686176, 9788978686174 |
| Publication status | Published - 1 Jan 2003 |
| Externally published | Yes |
| Event | 7th Korea-Russia International Symposium on Science and Technology, KORUS 2003 - Ulsan, Korea, Republic of Duration: 28 Jun 2003 → 6 Jul 2003 |
Conference
| Conference | 7th Korea-Russia International Symposium on Science and Technology, KORUS 2003 |
|---|---|
| Country | Korea, Republic of |
| City | Ulsan |
| Period | 28.6.03 → 6.7.03 |
Keywords
- Acoustic applications
- Acoustic measurements
- Acoustic propagation
- Acoustic waves
- Fatigue
- Frequency measurement
- Physics
- Signal analysis
- Steel
- Wavelet analysis
ASJC Scopus subject areas
- Building and Construction
- Pollution
- Biotechnology
- Social Sciences (miscellaneous)
- Medicine (miscellaneous)
- Education