ON THE POSSIBLE EVALUATION OF THE INNER INHOMOGENEITY OF APPLES USINGACOUSTIC VIBRATIONS

Citation
D. Afentaous et al., ON THE POSSIBLE EVALUATION OF THE INNER INHOMOGENEITY OF APPLES USINGACOUSTIC VIBRATIONS, Sciences des aliments, 16(2), 1996, pp. 107-115
Citations number
14
Categorie Soggetti
Food Science & Tenology
Journal title
ISSN journal
02408813
Volume
16
Issue
2
Year of publication
1996
Pages
107 - 115
Database
ISI
SICI code
0240-8813(1996)16:2<107:OTPEOT>2.0.ZU;2-O
Abstract
Acoustic resonance is a useful method to evaluate firmness of spherica l fruits. While firmness is very dependent on the inner heterogeneitie s of the fruit, it is interesting to use this non-destructive method t o analyse its inner status. Firstly experiments are carried out to sho w that a continuous sphere is a useful mechanical model of an apple fr om an acoustic point of view. Then results obtained using Finite Eleme nt Method are compared with experiments on an elastic sphere in which heterogeneities are created. It is shown that the elastic modification s of the sphere induce visible variations of the acoustic spectrum.