Saturday, November 17, 2012

Re: [MW:15942] Regarding 45 & 60 deg probes

Dear Sheikh

According to the procedure we have to use 3 probes , 1 probe for Parent Metal Scanning and remaining 2 for Weld Bead Scanning
generally probe selection formula is Lower the thickness ,Higher the probe angle

Main difference between 45 deg , 60 deg & 70 deg is beam spread and Attenuation 

70 deg has More Beam Spread and Attenuation 
60 deg has Medium Beam Spread and Attenuation 
45 deg has Less Beam Spread and Attenuation 

On Thu, Nov 15, 2012 at 9:47 PM, SHEIKH <kareemunsheikh@gmail.com> wrote:

Dear experts

commonly we are use 45 & 60 deg for higher thickness (more than 40mm thk). 

Questions:-

 

1) we be able to use 45 deg probe no more than near surface evaluation, why we necessitate to use far surface furthermore with 45 deg probe?

 

2) we are use already 45 deg probe into near surface, once more we necessitate to use 60 deg probe in near surface as well?

 

3) Suppose we use for near surface 45 deg and for far surface 60 deg there is any code opposition as well as any variations between both?

 

4) what is the advantages as well as disadvantages with 45 and 60 deg probes?

 


Thanks with regards

SHEIKH.

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Chichula Mahesh Kumar
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