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4. What are the sources of attenuation in solid media?
10. How are the common ways in which AE signals can be quantified?
9. Based on waveforms how one can differentiate between Ao and So modes of Lamb waves in an AE signal?
7. Describe the particles move in following: Wave propagation in solid media, surface waves, symmetric and antisymmetric Lamb waves.
6. Using sketches describe the reflection process at an interface between two solids, including shear horizontal and shear vertical waves, critical angles, reflection coefficients.