Abstract
To investigate the posibility of non-destructive inspecting of bolt flaws using ultrasonic guided wave, finite element method was used to simulate the longitudinal guided wave propagating in the bolt. Firstly, the guided wave phase velocity and group velocity dispersion curves were calculated. Then, guided wave propagating in the bolt with different flaws was simulated. Results show that the propagation velocities obtained from the numerical simulation agree well with the theoretical ones while the input signal frequency is lower than 90 kHz. Conclusion was drawn that the position of flaw on the bolt could be determined by combining the results from numerical simulation and theoretical calculation. And both the flaw size to bolt section area γ versus reflection factor R relationship curve and γ versus transmission factor T relationship curve can be used to determine the flaw size on the bolt.
| Original language | English |
|---|---|
| Pages (from-to) | 21-24 |
| Number of pages | 4 |
| Journal | Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology |
| Volume | 29 |
| Issue number | SUPPL. 1 |
| Publication status | Published - Apr 2009 |
Keywords
- Bolt
- Numerical simulation
- Ultrasonic guided wave
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