Location

Brunswick, ME

Start Date

1-1-1992 12:00 AM

Description

One of the benefits of eddy current (EC) testing is the attainability of high testing speeds while maintaining high sensitivity and requiring little with regard to material preparation. For this reason it is commonly automated and integrated in production lines of semi-finished products such as bars, tubes and wires. Because of the requirements of high throughput on-line digital analysis of EC signals is rarely applied, in contrast to ultrasonic testing. However, the usual methods of analog filtering and phase-selective or phase-insensitive threshold evaluation of EC signals are limited in regard to the suppression of false or pseudo-defect indications, classification of defect types, quantitative assessment of defect features and the suppression of signals originating from manmade structures.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

11A

Chapter

Chapter 3: Interpretive Signal Processing and Image Reconstruction

Section

Signal Processing

Pages

919-926

DOI

10.1007/978-1-4615-3344-3_118

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Fast Pattern Recognition Method for Eddy Current Testing

Brunswick, ME

One of the benefits of eddy current (EC) testing is the attainability of high testing speeds while maintaining high sensitivity and requiring little with regard to material preparation. For this reason it is commonly automated and integrated in production lines of semi-finished products such as bars, tubes and wires. Because of the requirements of high throughput on-line digital analysis of EC signals is rarely applied, in contrast to ultrasonic testing. However, the usual methods of analog filtering and phase-selective or phase-insensitive threshold evaluation of EC signals are limited in regard to the suppression of false or pseudo-defect indications, classification of defect types, quantitative assessment of defect features and the suppression of signals originating from manmade structures.