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Author: search.filters.author.Tantisopharak, TanawutSubject: search.filters.subject.Cauchy method

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    Nondestructive Determination of the Maturity of the Durian Fruit in the Frequency Domain Using the Change in the Natural Frequency
    (2016-05-01)
    Tantisopharak, Tanawut
    ;
    Moon, Hongsik
    ;
    Youryon, Pannipa
    ;
    Bunya-Athichart, Kanokpon
    ;
    Krairiksh, Monai
    This paper proposes a nondestructive technique to determine the stages of maturity of durian fruits. The presented methodology utilizes the electromagnetic scattering properties from the fruits over time for identification of the stage of maturity using its natural frequencies. Both simulation and experimental results show that the natural frequencies in the scattering responses change with the maturity of the durian fruit. Particularly, the change in the fundamental resonant frequency is used as a possible identification criterion for characterization of the stage of maturity. This is because the dielectric constant of the core of the fruit changes with its degree of maturity. In addition, the experimental results indicate that the variation of the dominant resonant frequency of durian fruits varies at different stages of maturity and this has the potential to be applied as a criterion to identify the stages of maturity.
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    Investigation of the natural resonant frequencies of palmyrah palm juice for quality control
    (2016-03-07)
    Tantisopharak, Tanawut
    ;
    Keowsawat, Panisa
    ;
    Kanahna, Rachen
    ;
    Krairiksh, Monai
    ;
    Sarkar, Tapan K.
    This paper proposes an identification methodology to distinguish between pure and adulterated palmyrah palm juice. The resonance behavior of the palmyrah palm juice has been investigated through numerical electromagnetic simulation. From the scattered response, the natural frequencies of the palmyrah palm juice are extracted. The identification can be performed by cataloging and comparing these pre computed library of the natural resonant frequencies associated with the standard palmyrah palm juice to check for the quality of the samples to be tested.
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    Identification of maturity of fruit in the frequency domain using its natural frequencies
    (2012-11-26)
    Tantisopharak, Tanawut
    ;
    Krairiksh, Monai
    ;
    Moon, Hongsik
    ;
    Lee, Woojin
    ;
    Sarkar, Tapan
    This paper presents an identification methodology to determine the stage of maturity of a fruit by using its natural resonant frequencies, which can be extracted from its scattering response. Since the dielectric properties of a fruit are determined by its chemical properties, the identification can be performed by comparing the libraries of poles to determine the stage of maturity for that fruit. © 2012 IEEE.