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- since 1996 -

Matec Instrument Companies, Inc.
Ultrasonic test instrumentation and systems for scientific research, quality control inspection and production testing applications.

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Technical Discussions
David Harvey
David Harvey
06:57 Jul-28-2004
UT of Bimetallic Tubing

Does anyone have any recommendations for performing UT of metallurgically bonded bimetallic tubing, where the two layers have differing sound velocities? I need to perform the normal OD and ID defect tests, as well as verify the bond quality.

I see the bond quality as being really interesting, since there should be a good reflection from the interface, so distinguishing from the reflection due to the impedance difference and that due to a lack of bond could be challenging.

I'm also puzzled by handling the angle beam testing, since the sound beam will altered at the interface, going and coming.

Suggestions as to where to go for information are appreciated!


    
 
 
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
03:04 Jul-28-2004
Re: UT of Bimetallic Tubing
What are the materials.

What is the thickness of the tubing?

Using refracted Longitudinal Waves and Creeping Waves, you should be able to handle the interface problems.

Establish a TOF (Sound Path) and depth calibration using ID and OD notches.

J. Mark Davis

----------- Start Original Message -----------
: Does anyone have any recommendations for performing UT of metallurgically bonded bimetallic tubing, where the two layers have differing sound velocities? I need to perform the normal OD and ID defect tests, as well as verify the bond quality.
: I see the bond quality as being really interesting, since there should be a good reflection from the interface, so distinguishing from the reflection due to the impedance difference and that due to a lack of bond could be challenging.
: I'm also puzzled by handling the angle beam testing, since the sound beam will altered at the interface, going and coming.
: Suggestions as to where to go for information are appreciated!
------------ End Original Message ------------




    
 
 
Eric chen
Engineering,
GE Aviation, China, Joined Nov 2002, 7

Eric chen

Engineering,
GE Aviation,
China,
Joined Nov 2002
7
01:50 Aug-02-2004
Re: UT of Bimetallic Tubing
David

You can contact GE Inspection Technologies Application center to find out the solution for that. More detail visit www.GeinspectionTechnologies.com

Regards

Eric

----------- Start Original Message -----------
: Does anyone have any recommendations for performing UT of metallurgically bonded bimetallic tubing, where the two layers have differing sound velocities? I need to perform the normal OD and ID defect tests, as well as verify the bond quality.
: I see the bond quality as being really interesting, since there should be a good reflection from the interface, so distinguishing from the reflection due to the impedance difference and that due to a lack of bond could be challenging.
: I'm also puzzled by handling the angle beam testing, since the sound beam will altered at the interface, going and coming.
: Suggestions as to where to go for information are appreciated!
------------ End Original Message ------------




    
 
 

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