A noncontact method for determining surface density of nonporous materials with the limp-wall mass law
| Autor: | Terence P. Lerch |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Aluminum foil Materials science Acoustics and Ultrasonics Shim (magnetism) 01 natural sciences Brass Membrane Through transmission Homogeneous visual_art 0103 physical sciences visual_art.visual_art_medium Forensic engineering Ultrasonic sensor Composite material Porous medium 010301 acoustics |
| Zdroj: | Applied Acoustics. 101:39-46 |
| ISSN: | 0003-682X |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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