Location

Brunswick, ME

Start Date

1-1-1992 12:00 AM

Description

In ultrasonic nondestructive evaluation (NDE), flaw characterization is inhibited by the effects of the measurement system and by acoustic noise due to non-flaw related scattering of the sound. The Wiener filter can be formulated to optimally remove the effects of the measurement system and suppress the noise; however, prior information must be available about the noise and flaw distributions, respectively. The objective of this research is to develop an approach for the optimal implementation of the Wiener filter given prior noise information but no prior flaw information.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

11A

Chapter

Chapter 3: Interpretive Signal Processing and Image Reconstruction

Section

Signal Processing

Pages

991-998

DOI

10.1007/978-1-4615-3344-3_127

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Error Analysis and Ultrasonic Scattering Amplitude Estimation Using the Wiener Filter with Limited Prior Information

Brunswick, ME

In ultrasonic nondestructive evaluation (NDE), flaw characterization is inhibited by the effects of the measurement system and by acoustic noise due to non-flaw related scattering of the sound. The Wiener filter can be formulated to optimally remove the effects of the measurement system and suppress the noise; however, prior information must be available about the noise and flaw distributions, respectively. The objective of this research is to develop an approach for the optimal implementation of the Wiener filter given prior noise information but no prior flaw information.