Location

San Diego, CA

Start Date

1-1-1985 12:00 AM

Description

The effects of diffraction play an important role in defining the performance of an ultrasonic inspection. For example, in a scanned inspection with a focussed probe, diffraction determines the size of the beam near the focal point. This in turn defines the size of the scan increments which will produce a desired probability of detecting a flaw. Increments which are too great will introduce a greater possibility of missing a flaw. Those which are too small will cause excess time and inspection cost.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

4A

Chapter

Chapter 1: Ultrasonics

Section

Transducers and Signal Processing

Pages

167-177

DOI

10.1007/978-1-4615-9421-5_19

Language

en

File Format

Application/pdf

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Jan 1st, 12:00 AM

Relationship of Gaussian Beam Theory to Scanned Ultrasonic Measurements with Commercial Transducers

San Diego, CA

The effects of diffraction play an important role in defining the performance of an ultrasonic inspection. For example, in a scanned inspection with a focussed probe, diffraction determines the size of the beam near the focal point. This in turn defines the size of the scan increments which will produce a desired probability of detecting a flaw. Increments which are too great will introduce a greater possibility of missing a flaw. Those which are too small will cause excess time and inspection cost.