UT of Welds - Reference Level, DAC and Applying Acceptance Critiea

The video defines the Reference Level used for ultrasonic testing and its application to the acceptance criteria. An example is presented where the reference level or DAC is established on 10 % ID and OD notches and applied on two discontinuities A and B

[@englishbol2801]

Sir please make a complete video on Eddy current NDE

[@amirafzalmalik3365]

Well, explained.

[@saravanakumarselvarengan1769]

Sir very nice and understanding the class excellent sir

[@anmolbirring6341]

Thanks

[@michamos6887]

Hello, could you say something about DGS technic ?

[@nandhakumar2297]

Hello sir i am struggling for RT film interepretation please explain video how to select defect level and defect marking

[@Hayri_NDT]

An echo that rises ℅20 (-14dB) above the reference curve is evaluated. It is not accepted, but its length and characterization are examined. Crack, LOP and LOF are rejected.

[@garapiapr]

DAC doesn't compensate for the attenuation of sound as it goes further into the thickness .. realistically ?

[@anmolbirring6341]

Primarily it is loss from beam spread. Carbon steel has very low attenuation