Location

Brunswick, ME

Start Date

1-1-1997 12:00 AM

Description

In eddy current testing of heat-exchanger pipes the signal of the scanning probe is usually presented in the complex plane as a Lissajous curve. The size (amplitude) of the curve corresponds roughly to the volume of the defect. The phase is related to the depth of the defect and its location (inside or outside defects). Finally, the shape of the curve depends on the form of the defect.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

16A

Chapter

Chapter 1: Standard Techniques

Section

Eddy Currents

Pages

303-308

DOI

10.1007/978-1-4615-5947-4_39

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

A Method of Representing and Comparing Eddy Current Lissajous Patterns

Brunswick, ME

In eddy current testing of heat-exchanger pipes the signal of the scanning probe is usually presented in the complex plane as a Lissajous curve. The size (amplitude) of the curve corresponds roughly to the volume of the defect. The phase is related to the depth of the defect and its location (inside or outside defects). Finally, the shape of the curve depends on the form of the defect.