Acoustic Resonance Technology

Acoustic Resonance Technology

Acoustic Resonance Technology is a low frequency, ultra-wideband inspection technology, which enables very accurate thickness measurements to be made. BIT has developed advanced algorithms to perform ART analysis on very large amounts of data.

A transducer transmits a broad-band acoustic signal towards the pipe surface. The signal propagates in the pipe wall, exciting half-wave resonances. The response of the structure transmits a characteristic signal which is detected by the receiving transducer. Analysis of the frequency content of this response signal yields the resonance peak frequencies, from which the base resonance frequency, and ultimately the structure’s thickness, can be estimated.

During post-processing, multiple measurements can be combined to estimate the size and depth of flaws, such as corrosion (internal and external) on the pipe surface.


Acoustic Resonance Technology

The benefits to the customers in using Acoustic Resonance Technology:

Challenges for Owners of Water Pipes

GOAL: rehabilitate with the right method at the right time at the right place




Pipe section number Pipe section name Pipe section beginning, m Pipe section end, m Pipe section length, m Minimum possible thickness, mm Average thickness, mm
1 Steel pipe 11.5 15.4 3.9 6.8 7.2
2 Steel pipe 15.4 27.7 12.3 6.2 7.0
3 Steel pipe 27.7 40.0 12.3 6.4 6.9