I have an ultrasonic testing equipment that can only measure the direct and semi-direct ( (a) and (b) in the image below):


I can measure compression wave velocities fairly easily, but I would like to know if it is possible to measure the shear wave velocity.

Is it possible to measure the shear wave velocity in a lab setting using this? What should the distance between the two sensors be to provide accurate measurments?


Well, nothing is impossible. But, lets see what you are trying to do:

Diagram of waves

This diagram is simplified; in reality, there are 3 different P (compression) waves and 2 different S (shear) waves.

Measurement of the first P wave is very easy because it depends on the first arrival time (it is the fastest wave).

But to measure the S wave, you first need to isolate the noise, the reflections caused by P waves, the refraction and then determine if you have the correct S wave or not.

Doing so is very hard.

However, you can use specific transducers called shear wave transducer that will generate shear waves directly so you can measure them.

| improve this answer | |

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.