Ultrasonic lamb wave technique for measurement of pipe wall...

Details Ultrasonic lamb wave technique for measurement of pipe wall... Ultrasonic lamb wave technique for measurement of pipe wall...

G - Physics

01

N

G01N 29/07 (2006.01) G01B 17/02 (2006.01) G01N 17/00 (2006.01)

Patent

CA 2258439

This invention is a new inspection technique using ultrasonic Lamb waves to measure reduction of pipe wall thickness due to localized corrosion at pipe supports. The technique uses two transducers in a pitch-catch mode to send and receive a selected Lamb wave. The wave travels along the pipe wall in the circumferential direction. The reduction of the pipe wall thickness at the pipe support changes the time-of-flight between the two transducers. By comparing time-of-flight data measured from the pipe support area and from areas adjacent to the pipe support, one can quantify the change of time-of-flight due to the pipe corrosion wall loss at the support. A mathematical model, a sizing algorithm and a PC program have been developed to quantitatively relate in time-of-flight to the minimum remaining wall thickness. With them, one can quantify the minimum remaining pipe wall thickness at a pipe support by simply measuring the change in the time-of-flight.

Affiliated with

Also associated with

Rating

Ultrasonic lamb wave technique for measurement of pipe wall... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ultrasonic lamb wave technique for measurement of pipe wall..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ultrasonic lamb wave technique for measurement of pipe wall... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1756391