Location

Brunswick, ME

Start Date

1-1-1992 12:00 AM

Description

Ultrasonic equivalent flaw sizing is a method in which the size, shape, and orientation of a flaw is determined in terms of a best-fit simple shape, such as an ellipsoid (for volumetric flaws) or an ellipse (for cracks). Previous equivalent flaw sizing methods have used the Born [1] or Kirchhoff [2] approximations in conjunction with non-linear optimization procedures. More recently, Chiou and Schmerr [3] have shown how the non-linear optimization problem in equivalent sizing can be reduced to a simpler linear least squares/eigenvalue problem.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

11A

Chapter

Chapter 3: Interpretive Signal Processing and Image Reconstruction

Section

Imaging and Inversion Techniques

Pages

857-862

DOI

10.1007/978-1-4615-3344-3_110

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Ultrasonic Equivalent Flaw Sizing - A Time-of-Flight Approach

Brunswick, ME

Ultrasonic equivalent flaw sizing is a method in which the size, shape, and orientation of a flaw is determined in terms of a best-fit simple shape, such as an ellipsoid (for volumetric flaws) or an ellipse (for cracks). Previous equivalent flaw sizing methods have used the Born [1] or Kirchhoff [2] approximations in conjunction with non-linear optimization procedures. More recently, Chiou and Schmerr [3] have shown how the non-linear optimization problem in equivalent sizing can be reduced to a simpler linear least squares/eigenvalue problem.