Publication detail

Determination of Detachment Frequencies of Ripe Coffee Fruits (Coffea Arabica var. Colombia) by means of a Numerical and Experimental Approach

Tinoco, H.A. Peña, F.M.

Original Title

Determination of Detachment Frequencies of Ripe Coffee Fruits (Coffea Arabica var. Colombia) by means of a Numerical and Experimental Approach

Type

conference paper

Language

English

Original Abstract

In this study, it is proposed an experimental and numerical approach to identify a bandwidth of harmonic frequencies where ripe fruits of Coffea arabica L. var. Colombia can be selectively stimulated. For this purpose, a geometric model was designed computationally to represent the topology of the coffee fruit-peduncle system in all ripening stages. Using analytical models and pseudo experimental data, the mechanical properties were estimated to carry out a finite element analysis of the system. It was verified with a detachment model that a fruit can be detached when a specific harmonic force (mechanical vibrations) is applied on the fruits in determined frequencies which correspond to the second vibration mode of the fruits. Results indicate that dynamic excitations between 130 to 150 Hz could detach only ripe fruits, since fruits that were in other ripening stages were not stimulated until detachment in that bandwidth.

Keywords

Coffea arabica, selective detachment, selective harvesting, vibrations in coffee

Authors

Tinoco, H.A.; Peña, F.M.

Released

25. 4. 2017

Publisher

Ustav Fysiky Materialu AV CR

Location

Brno

ISBN

978-80-87434-08-6

Book

Applied Mechanics 2017 Conference Proceedings

Edition

Lubos Nahlik

Pages from

1

Pages to

4

Pages count

4

URL

http://doi.org/10.31224/osf.io/qgkew

BibTex

@inproceedings{BUT170708,
  author="Tinoco, H.A. and Peña, F.M.",
  title="Determination of Detachment Frequencies of Ripe Coffee Fruits (Coffea Arabica var. Colombia) by means of a Numerical and Experimental Approach",
  booktitle="Applied Mechanics 2017 Conference Proceedings",
  year="2017",
  series="Lubos Nahlik",
  pages="1--4",
  publisher="Ustav Fysiky Materialu AV CR",
  address="Brno",
  doi="10.31224/osf.io/qgkew",
  isbn="978-80-87434-08-6",
  url="http://doi.org/10.31224/osf.io/qgkew"
}