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- since 1996 -

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Technical Discussions
john williams
NDT Inspector
United Kingdom, Joined Dec 2000, 5

john williams

NDT Inspector
United Kingdom,
Joined Dec 2000
5
00:03 Dec-04-2000
root assessment of 4mm wall pipe

Is it possible to assess the root of 4mm wall thick pipe with a 10mm wide weld reinforcement using conventional a-scan equipment


    
 
 
Mark Davis
Teacher, And Consultant
University of Ultrasonics, Birmingham, Alabama, USA, Joined Mar 2000, 85

Mark Davis

Teacher, And Consultant
University of Ultrasonics, Birmingham, Alabama,
USA,
Joined Mar 2000
85
00:17 Dec-04-2000
Re: root assessment of 4mm wall pipe
Yes, one consdieration would be to use a time of flight focused shearwave probe at about 70 or maybe 75 degrees.

You did not state the maetrial type. If an austenitic material, then focused L wave using TOF may be necessary.

Calibration would be a block of similar material with side drilled holes at 1 mm depth.

What is the damage mechanism you are looking for???

Cracks, corrosion???

Sincerely,

J. Mark Davis

: Is it possible to assess the root of 4mm wall thick pipe with a 10mm wide weld reinforcement using conventional a-scan equipment




    
 
 
john williams
NDT Inspector
United Kingdom, Joined Dec 2000, 5

john williams

NDT Inspector
United Kingdom,
Joined Dec 2000
5
02:45 Dec-04-2000
Re: root assessment of 4mm wall pipe
: Is it possible to assess the root of 4mm wall thick pipe with a 10mm wide weld reinforcement using conventional a-scan equipment. The material is mild steel





    
 
 
Mark Davis
Teacher, And Consultant
University of Ultrasonics, Birmingham, Alabama, USA, Joined Mar 2000, 85

Mark Davis

Teacher, And Consultant
University of Ultrasonics, Birmingham, Alabama,
USA,
Joined Mar 2000
85
03:26 Dec-04-2000
Re: root assessment of 4mm wall pipe
What type of damage mechamism are looking for. Cracks Corrosion???

: : Is it possible to assess the root of 4mm wall thick pipe with a 10mm wide weld reinforcement using conventional a-scan equipment. The material is mild steel





    
 
 

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