Ultrasonic Scanning System for Inspection of Brazed Tube Joints

摘要

Described herein is the Ultrasonic Scanning System used to inspect and evaluate in-place brazed tube joints. Because of the expanding use of brazed fittings in the Aerospace field the Ultrasonic Scanning System was designed, developed, and built especially for nondestructive testing. It was selected because of its known response to brazing defects not associated with material density changes.nThe developed scan system is capable of scanning brazed joints in union, tee, elbow, and cross configuration of 3/16-inch through 5/8-inch diameters. The system is capable of detecting brazed defects as small as 0. 008 by 0. 010-inch which exceeds the 0. 015-inch diameter defect resolution required by specification.