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Nubira20
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- Homework Statement
- One longitudinal US pulse was emitted inside a steel sheet that is 1cm wide at an angle of 15 o . Lubrication oil covers the backside of the steel sheet. You know that US velocity in steel is 6.2km/s and 4.1km/s for longitudinal and sheer waves, and 1.3km/s in oil. what is the (lateral) distance (on the sheet surface) between the source pulse and the longitudinal echo?
- Relevant Equations
- Snell's law
I calculated the first critical angle and found the incident angle here to be greater than it thus there no echoes because the beam didn't refract , but i asked a friend and he told me no and that he calculated a number .. any help ?