Location

La Jolla, CA

Start Date

1-1-1993 12:00 AM

Description

The ultrasonic detection of subsurface flaws, such as cracks or voids, may be greatly degraded by the presence of rough surfaces [1,2]. The loss of signal-to-noise arises for three reasons. First, the randomization of the phase of the wave by the roughness may reduce the phase coherent signal from the flaw. Second, additional noise is generated directly by the reflection of the incident beam by the rough surface. Finally, the material noise is modified.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

12B

Chapter

Chapter 6: Material Properties

Section

Ceramics and Semiconductors

Pages

1767-1774

DOI

10.1007/978-1-4615-2848-7_226

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Ultrasonic Inspection, Material Noise and Surface Roughness

La Jolla, CA

The ultrasonic detection of subsurface flaws, such as cracks or voids, may be greatly degraded by the presence of rough surfaces [1,2]. The loss of signal-to-noise arises for three reasons. First, the randomization of the phase of the wave by the roughness may reduce the phase coherent signal from the flaw. Second, additional noise is generated directly by the reflection of the incident beam by the rough surface. Finally, the material noise is modified.