Location

Santa Cruz, CA

Start Date

1-1-1984 12:00 AM

Description

The ultrasonic scattering from cracks is traditionally modelled by requiring that the stresses vanish on the crack faces. A violation of this assumption is found in real cracks when asperities on opposing faces are forced into contact by closure or applied stresses. Many investigators have reported substantial decreases in ultrasonic reflections, as well as partial transmission through such cracks. This paper describes a model which has been developed to take into account the effects of the contacts on the ultrasonic signals scattered from the crack.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

3A

Chapter

Chapter 2: Ultrasonics

Section

Scattering

Pages

207-215

DOI

10.1007/978-1-4684-1194-2_19

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

The Effects of Crack Closure on Ultrasonic Scattering Measurements

Santa Cruz, CA

The ultrasonic scattering from cracks is traditionally modelled by requiring that the stresses vanish on the crack faces. A violation of this assumption is found in real cracks when asperities on opposing faces are forced into contact by closure or applied stresses. Many investigators have reported substantial decreases in ultrasonic reflections, as well as partial transmission through such cracks. This paper describes a model which has been developed to take into account the effects of the contacts on the ultrasonic signals scattered from the crack.