Location

Snowbird, UT, USA

Start Date

1-1-1999 12:00 AM

Description

The ultrasonic reflection, and transmission, coefficients can be used to determine the extent of interfacial imperfections such as solid-solid contacts, in which two dry, solid bodies are loaded against one another [1]. This paper describes the results of studies of the interaction of ultrasound with three different solid-solid contact systems. For each of these systems reflection coefficient measurements were made as a function of load. These measurements were made in the low frequency regime and so, taking the quasi-static approximation [2], it was possible to calculate the interfacial stiffness. A numerical contact model is used to predict the interfacial stiffness. The experimental and numerical results are compared and the reasons for the differences explained.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

18B

Chapter

Chapter 5: Engineered Materials

Section

Coatings, Interfaces, and Bonds

Pages

1455-1462

DOI

10.1007/978-1-4615-4791-4_187

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

The Use of Ultrasound to Investigate Rough Surface Contact Phenomena

Snowbird, UT, USA

The ultrasonic reflection, and transmission, coefficients can be used to determine the extent of interfacial imperfections such as solid-solid contacts, in which two dry, solid bodies are loaded against one another [1]. This paper describes the results of studies of the interaction of ultrasound with three different solid-solid contact systems. For each of these systems reflection coefficient measurements were made as a function of load. These measurements were made in the low frequency regime and so, taking the quasi-static approximation [2], it was possible to calculate the interfacial stiffness. A numerical contact model is used to predict the interfacial stiffness. The experimental and numerical results are compared and the reasons for the differences explained.