Method of ultrasonic flaw detection of pipe

Details Method of ultrasonic flaw detection of pipe Method of ultrasonic flaw detection of pipe

1983-10-14

1985-12-03

Swisher, S. Clement

Measuring and testing

Vibration

By mechanical waves

G01N 2904

Patent

active

045559481

ABSTRACT:
A method of ultrasonic flaw detection of a pipe comprises comparing ultrasonic waves passing through a test piece portion with the arithmetic means of ultrasonic waves passing through portions adjacent each side of the test portion. The comparison is made around the entire periphery of a pipe, for example, an austenic heat resisting cast steel pipe used as a hydrogen manufacturing reformer tube. This method is free from adverse influence of macrostructures unevenly distributed in the peripheral direction of the pipe, and enables a quantitative grasp of flaws in a base material and a weld of the pipe.

REFERENCES:
patent: 4467654 (1984-08-01), Murakami et al.

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