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Technical Discussions
Shyamal Mondal
Shyamal Mondal
03:03 Feb-29-2000
Calculate the size of the arbitrary cracks using TOFD method.

I would like to establish a TOFD mathematical model for
calculating the size of defects which position and
orientation are not vertical to the surface.At the moment
I am finding difficulties to calculate the bottom tip crack
angle lying parallal with the surface.
I very much appreciate any information (Book, Jouranl, etc.)
from anyone.

Kind Regards

Shyamal Mondal
Email: mondals@sbu.ac.uk

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

J. Mark Davis

Teacher, And Consultant
University of Ultrasonics, Birmingham, Alabama,
USA,
Joined Mar 2000
85
03:17 Feb-29-2000
Re: Calculate the size of the arbitrary cracks using TOFD method.
Dear Shamal,

I am very familar with the Time of Flight techniques using Tip Diffraction. I teach these technqiues along with ID and OD Creeping Waves and BI-modal Methods. I have written a handbook on these techniques. See NDT.Net library.

I need to understand better your question. I train inspectors with Tip Diffraction to read the flw depth directly from the UT screen.

Are you trying to determine the angle of the crack if not vertical but oriented?

Thanks,

J. Mark Davis

: I would like to establish a TOFD mathematical model for
: calculating the size of defects which position and
: orientation are not vertical to the surface.At the moment
: I am finding difficulties to calculate the bottom tip crack
: angle lying parallal with the surface.
: I very much appreciate any information (Book, Jouranl, etc.)
: from anyone.

: Kind Regards

: Shyamal Mondal
: Email: mondals@sbu.ac.uk

Ed Ginzel
R & D, -
Materials Research Institute, Canada, Joined Nov 1998, 1307

Ed Ginzel

R & D, -
Materials Research Institute,
Joined Nov 1998
1307
03:48 Mar-01-2000
Re: Calculate the size of the arbitrary cracks using TOFD method.

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