Bioinspired Low-Frequency Material Characterisation
Joint Authors
Rees, J. G.
Hopper, C.
Gunn, D. A.
Lovell, M. A.
Wilkinson, P. B.
Jackson, P. D.
Assous, S.
O'Leary, R. L.
Source
Advances in Acoustics and Vibration
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-04-05
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
New-coded signals, transmitted by high-sensitivity broadband transducers in the 40–200 kHz range, allow subwavelength material discrimination and thickness determination of polypropylene, polyvinylchloride, and brass samples.
Frequency domain spectra enable simultaneous measurement of material properties including longitudinal sound velocity and the attenuation constant as well as thickness measurements.
Laboratory test measurements agree well with model results, with sound velocity prediction errors of less than 1%, and thickness discrimination of at least wavelength/15.
The resolution of these measurements has only been matched in the past through methods that utilise higher frequencies.
The ability to obtain the same resolution using low frequencies has many advantages, particularly when dealing with highly attenuating materials.
This approach differs significantly from past biomimetic approaches where actual or simulated animal signals have been used and consequently has the potential for application in a range of fields where both improved penetration and high resolution are required, such as nondestructive testing and evaluation, geophysics, and medical physics.
American Psychological Association (APA)
Hopper, C.& Assous, S.& Wilkinson, P. B.& Gunn, D. A.& Jackson, P. D.& Rees, J. G.…[et al.]. 2012. Bioinspired Low-Frequency Material Characterisation. Advances in Acoustics and Vibration،Vol. 2012, no. 2012, pp.1-12.
https://search.emarefa.net/detail/BIM-508827
Modern Language Association (MLA)
Hopper, C.…[et al.]. Bioinspired Low-Frequency Material Characterisation. Advances in Acoustics and Vibration No. 2012 (2012), pp.1-12.
https://search.emarefa.net/detail/BIM-508827
American Medical Association (AMA)
Hopper, C.& Assous, S.& Wilkinson, P. B.& Gunn, D. A.& Jackson, P. D.& Rees, J. G.…[et al.]. Bioinspired Low-Frequency Material Characterisation. Advances in Acoustics and Vibration. 2012. Vol. 2012, no. 2012, pp.1-12.
https://search.emarefa.net/detail/BIM-508827
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-508827