Concrete structures like roads and bridges require nondestructive testing methods to identify interior defects without destroying their structure. Most methods send sound waves into the material and ...

In summer 1998, TransCanada PipeLines Ltd., Calgary, inspected two sections of a 914-mm (36 in.) OD gas transmission pipeline (predominantly 9.14 mm WT) using an ultrasonic liquid-coupled, crack ...

A high-efficiency circular vibration/polarization ultrasonic conversion technology capable of detecting cracks, which can occur in various directions within a structure, has been developed for the ...

Engineering structures including buildings, pipelines and rails require periodic testing to prevent catastrophic failures occurring due to corrosion, impact, and strain. High-frequency sound waves ...

Researchers created a high-resolution 3D ultrasonic imaging system for concrete that uses broadband ultrasonic signals to automatically adapt to different types of concrete structures. WASHINGTON, Jan ...