Open Access
Table 10.
Advantages and limitations of guided waves using EMAT bond inspection of Al-Sn alloy/steel bimetal strip.
| Advantages | Limitations |
|---|---|
| Ultrasound directly interrogates and interacts with delamination. | Rigid mechanical integration required to avoid any lift offs between test specimen and probe. |
| High reproducibility and repeatability, not dependent on operator. | High calibration effort. |
| No requirement for coupling media or immersion bath. | No commercial system exists, need to be adapted for Al-Sn alloy/steel bimetal strip. |
| Material surface irregularities do not affect the test results. | |
| No mechanical loading required. | |
| 100% Volume inspection due to guided waves. | |
| Low Signal-to-Noise ratio possible. | |
| Fast automated inspection possible. |
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