A noncontact method for determining surface density of nonporous materials with the limp-wall mass law

Terence P. Lerch

doi:10.1016/j.apacoust.2015.08.001

A noncontact method for determining surface density of nonporous materials with the limp-wall mass law

Terence P. Lerch

Engineering & Technology, School Of

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

Abstract A new noncontact technique for determining the surface density or mass per unit area of nonporous, homogeneous membranes and foils of sub-wavelength thicknesses is introduced. Surface densities are determined through application of the limp-wall mass law and through-transmission ultrasonic measurements of bulk waves. The ultrasonic measurements are performed with commercially-available, broadband air-coupled ultrasonic transducers. Surface densities of aluminum foil, brass shim, and plastic sheets are typically found to be within 3% of their accepted values.

Original language	English
Article number	5632
Pages (from-to)	39-46
Number of pages	8
Journal	Applied Acoustics
Volume	101
DOIs	https://doi.org/10.1016/j.apacoust.2015.08.001
State	Published - Jan 1 2016

Keywords

Air-coupled ultrasound
Limp-wall mass law
Mass per unit area
Material characterization
Surface density
Through-transmission

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10.1016/j.apacoust.2015.08.001

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title = "A noncontact method for determining surface density of nonporous materials with the limp-wall mass law",

abstract = "Abstract A new noncontact technique for determining the surface density or mass per unit area of nonporous, homogeneous membranes and foils of sub-wavelength thicknesses is introduced. Surface densities are determined through application of the limp-wall mass law and through-transmission ultrasonic measurements of bulk waves. The ultrasonic measurements are performed with commercially-available, broadband air-coupled ultrasonic transducers. Surface densities of aluminum foil, brass shim, and plastic sheets are typically found to be within 3% of their accepted values.",

keywords = "Air-coupled ultrasound, Limp-wall mass law, Mass per unit area, Material characterization, Surface density, Through-transmission",

author = "Lerch, {Terence P.}",

note = "Funding Information: The author would like to thank Mr. Mark Blackmer for his assistance in designing and fabricating the material holder. The equipment was procured through a grant from the Office of Research and Sponsored Programs at Central Michigan University. Publisher Copyright: {\textcopyright} 2015 Elsevier Ltd.",

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AU - Lerch, Terence P.

N1 - Funding Information: The author would like to thank Mr. Mark Blackmer for his assistance in designing and fabricating the material holder. The equipment was procured through a grant from the Office of Research and Sponsored Programs at Central Michigan University. Publisher Copyright: © 2015 Elsevier Ltd.

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N2 - Abstract A new noncontact technique for determining the surface density or mass per unit area of nonporous, homogeneous membranes and foils of sub-wavelength thicknesses is introduced. Surface densities are determined through application of the limp-wall mass law and through-transmission ultrasonic measurements of bulk waves. The ultrasonic measurements are performed with commercially-available, broadband air-coupled ultrasonic transducers. Surface densities of aluminum foil, brass shim, and plastic sheets are typically found to be within 3% of their accepted values.

AB - Abstract A new noncontact technique for determining the surface density or mass per unit area of nonporous, homogeneous membranes and foils of sub-wavelength thicknesses is introduced. Surface densities are determined through application of the limp-wall mass law and through-transmission ultrasonic measurements of bulk waves. The ultrasonic measurements are performed with commercially-available, broadband air-coupled ultrasonic transducers. Surface densities of aluminum foil, brass shim, and plastic sheets are typically found to be within 3% of their accepted values.

KW - Air-coupled ultrasound

KW - Limp-wall mass law

KW - Mass per unit area

KW - Material characterization

KW - Surface density

KW - Through-transmission

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DO - 10.1016/j.apacoust.2015.08.001

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VL - 101

SP - 39

EP - 46

JO - Applied Acoustics

JF - Applied Acoustics

M1 - 5632

ER -

A noncontact method for determining surface density of nonporous materials with the limp-wall mass law

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Keywords

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