Location

La Jolla, CA

Start Date

1981 12:00 AM

Description

It has been reported before that frequency and angular information from ultrasonic scattering can be used to characterize smooth artificial defects in metals. In this study ultrasonic measurements from fractured and smooth penny-shaped cracks of the same size were carried out. Experimental procedures included the use of broad band and narrow band ultrasonic signals. From angular and frequency dependence of ultrasonic scattering measurements the size, shape, orientation and rms roughness of the fractured surface have been estimated. Ultrasonic measurements of these parameters have been compared to the actual parameters of the defect.

Book Title

Proceedings of the ARPA/AFML Review of Progress in Quantitative NDE

Chapter

11. Ultrasonic Scattering from Cracks

Pages

320-329

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Ultrasonic Characterization of Rough Cracks

La Jolla, CA

It has been reported before that frequency and angular information from ultrasonic scattering can be used to characterize smooth artificial defects in metals. In this study ultrasonic measurements from fractured and smooth penny-shaped cracks of the same size were carried out. Experimental procedures included the use of broad band and narrow band ultrasonic signals. From angular and frequency dependence of ultrasonic scattering measurements the size, shape, orientation and rms roughness of the fractured surface have been estimated. Ultrasonic measurements of these parameters have been compared to the actual parameters of the defect.