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- since 1996 -
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Technical Discussions
Kamran Eftekharmehr
Student
tehran poly tecqnik, Iran, Joined Dec 2001, 2

Kamran Eftekharmehr

Student
tehran poly tecqnik,
Iran,
Joined Dec 2001
2
09:40 Feb-20-2002
crack depth measureing by tip method

Dear colleagues

>I'm trying to measure cracks depth by tip
>diffraction method in a steel thin plate.
>
>
>My questions are:
>1. What angle is the best for this job and why?
>
>2. Is the 180 degree phase chenge between root and tip
>signals, for 45 degree refracted wave or for all
>angles?
>
>3. would you please send me some theoretical
>literature(if its possible)or reference?
>
>
> best whishes
>



    
 
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