Water pipelines often have small cracks and leaks over time due to various degradation
process. Acoustic emission technique is an outstanding method in leak detection for low cost …

Despite recent advances in robotic technology, sewer pipe inspection is still limited to
conventional approaches that use cable-tethered robots. Such commercially available …

An acoustic method for simultaneous condition detection, localization, and classification in
air-filled pipes is proposed. The contribution of this work is threefold:(1) a microphone array …

Based on the theory of acoustic–solid coupling, the phase velocity-thickness product of a
double-layer liquid-filled pipeline is analyzed, and the dispersion relationship between …

Pipe inspection robots with sensors significantly enhance the maintenance of water systems
by enabling early defect detection and reducing the risks of leaks and environmental …

This paper reports on the use of a circular microphone array to analyze the reflections from a
pipe defect with enhanced resolution. A Bayesian maximum a posteriori algorithm is …

Acoustic sensing system deployed on an autonomous platform (also referred to as robot) for
accurate condition monitoring and fault detection in pipes requires the knowledge of wave …

This paper describes an application of a micro-electromechanical system (MEMS) vector
hydrophone to detect 10–20 mm wall damage in a 300 mm diameter ductile iron pipe used …

Autonomous robots equipped with long-range acoustic sensing are revolutionizing the
inspection of extensive sewer networks by accurately detecting and mapping artefacts and …

This paper studies the acoustic wave scattering and attenuation in a cylindrical waveguide
(pipe) with wall roughness varying along all three dimensions and roughness height smaller …