Definition - What does Ultrasonic Inspection mean?
Ultrasonic inspection in the context of sewer rehabilitation can be defined as a method that utilizes ultrasound technology, in the form of an ultrasound gauge, to determine the thickness of an underground pipe carrying sewer or industrial waste suspected to be corroded. In trenchless technology ultrasonic inspection offers a cost effective solution to pinpoint the problem area without disturbing the surface.
Trenchlesspedia explains Ultrasonic Inspection
Ultrasonic inspection can be carried out to determine the thickness of pipe materials including cast iron, ductile iron, stainless steel, wrought iron and concrete. Internal and external testing using ultrasonic inspection is carried out to determine the extent of pipe thinning due to corrosion. When ultrasound waves using rotary ultrasonic sonars are sent across a confined area like a sewer pipe filled with liquid, it generates guided ultrasonic waves (GUW) as the waves are guided by the pipe boundary. It can probe long lengths of pipe to locate cracks and thinning due to corrosion, giving a full cross sectional view of the pipe.