Re: Carbon Composite Tubing Wall Thickness Measurement

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Re: Carbon Composite Tubing Wall Thickness Measurement
Posted by: Tom Nelligan (PID_139), E-mail: nelligant@panametrics.com, on December 07, 2001 at 17:07 :
In Reply to: Carbon Composite Tubing Wall Thickness Measurement posted by : David Miller , E-mail: davemiller@pcmc.com, on December 07, 2001 at 16:48 :
: I have a need to non-destructively measure the wall thickness of carbon fiber composite tubing in the range of the following:
: OD: 25-50mm
: WALL THICKNESS: 5-10mm
: I need to make many accurate measurements around the circumference of this tubing to verify concentricity of the OD and ID. Can ultrasonic measurement be used for this purpose? Is there another method which would work better...capacitance transducers? Any help would be appreciated.

Yes, it certainly should be possible to measure wall thickness ultrasonically, in either a contact or immersion mode. We've done this sort of thing for a number of customers. An immersion test using a v-notch fixture for part stabilization may be the quickest way to check concentricity... you can spin the part while recording maximum and minimum thickness. I would try a 5 MHz broadband transducer for the thickness range indicated.
If you're interested in pursuing this, my company is among those that can provide you with equipment.
--Tom Nelligan
Panametrics, Inc.
www.panametrics.com

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: : I have a need to non-destructively measure the wall thickness of carbon fiber composite tubing in the range of the following: : : OD: 25-50mm : : WALL THICKNESS: 5-10mm : : I need to make many accurate measurements around the circumference of this tubing to verify concentricity of the OD and ID. Can ultrasonic measurement be used for this purpose? Is there another method which would work better...capacitance transducers? Any help would be appreciated. . : : Yes, it certainly should be possible to measure wall thickness ultrasonically, in either a contact or immersion mode. We've done this sort of thing for a number of customers. An immersion test using a v-notch fixture for part stabilization may be the quickest way to check concentricity... you can spin the part while recording maximum and minimum thickness. I would try a 5 MHz broadband transducer for the thickness range indicated. . : If you're interested in pursuing this, my company is among those that can provide you with equipment. . : --Tom Nelligan : Panametrics, Inc. : www.panametrics.com .

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