Open Access

Table 9.

Advantages and limitations of ultrasound C-scan bond inspection of Al-Sn alloy/steel bimetal strip.

Advantages Limitations
Ultrasound directly interrogates and interacts with delamination. Time consuming and costly scanning required to inspect 100% of the material.
Well established technique in industry. Poor reproducibility and repeatability.
No mechanical loading required. Requirement for coupling media or immersion bath (difficult for in-line continuous testing).
Slow automated inspection possible. Significant water/coupling media carry over.
High calibration effort.
Highly skilled and/or experienced operator required.
Difficulties to focus probe when material is moving.

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