Location

Brunswick, ME

Start Date

1-1-1992 12:00 AM

Description

When a surface containing a surface-breaking crack is directly accessible for the generation of ultrasound, the use of surface waves is a preferred technique for depth determination of the crack. In principle, the crack depth can be determined by an accurate measurement at a fixed frequency or over a range of frequencies of either or both the reflection, R, and transmission, T, coefficients, and by subsequent comparison of these measurements with theoretical results for R and/or T as functions of crack depth.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

11A

Chapter

Chapter 4: Sensors and Standards

Section

Acoustic and Ultrasonic Sensors

Pages

1035-1042

DOI

10.1007/978-1-4615-3344-3_133

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Self-Calibrating Ultrasonic Technique for R/T and T/R Measurements

Brunswick, ME

When a surface containing a surface-breaking crack is directly accessible for the generation of ultrasound, the use of surface waves is a preferred technique for depth determination of the crack. In principle, the crack depth can be determined by an accurate measurement at a fixed frequency or over a range of frequencies of either or both the reflection, R, and transmission, T, coefficients, and by subsequent comparison of these measurements with theoretical results for R and/or T as functions of crack depth.