Allowing very small imperfections to be detected Good penetration power. Allowing the inspection of thick sections Accurate determination of imperfection position and estimation of imperfection severity. Fast response time. Permitting high speed automatic testing. One surface access.
Access is required to only one surface of the product being inspected.
The gated area is the point in time after the initial transmitter pulse when a return echo from any imperfection would arrive. Note the different positions of the internal and external gates due to the different transit times for reflections from internal and external inperfections. The following topics provide more detailed information concerning the various types of ultrasonic inspection systems available for tubular or bar products. Rotary Probes - Production line ultrasonic tube tester. Weld Inspection - Ultrasonic weld line inspection equipment.