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Experimental Assessment of the Elastic Properties of Exocarp-Mesocarp and Beans of Coffea arabica L. var. Castillo Using Indentation Tests
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SYSNO ASEP 0557096 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Experimental Assessment of the Elastic Properties of Exocarp-Mesocarp and Beans of Coffea arabica L. var. Castillo Using Indentation Tests Author(s) Tinoco Navaro, Hector Andres (UFM-A) ORCID
Buitrago-Osorio, J. (CO)
Perdomo-Hurtado, L. (CO)
Lopez-Guzman, J. (CO)
Ibarra, C. (CO)
Rincon-Jimenez, A. (CO)
Ocampo, O. (CO)
Berrio, L. V. (CO)Number of authors 8 Article number 502 Source Title Agriculture-Basel. - : MDPI
Roč. 12, č. 4 (2022)Number of pages 13 s. Language eng - English Country CH - Switzerland Keywords fruit-stem system ; mechanical-properties ; force ; simulation ; hardness ; modulus ; Coffe arabica L. var. Castillo ; indentation test ; elastic properties ; Young's modulus ; hardness ; selective harvesting Subject RIV JQ - Machines ; Tools OECD category Applied mechanics Method of publishing Open access Institutional support UFM-A - RVO:68081723 UT WOS 000785454000001 EID SCOPUS 85128274452 DOI 10.3390/agriculture12040502 Annotation The development of selective coffee harvesting technologies requires detailed knowledge of the geometrical, physical, and mechanical properties of the subsystems of the coffee bush, including the elastic properties of the substructures of fruit and the coffee bean, which are directly related to the selectivity problem. The elastic properties of the mesocarp-exocarp and bean are not described in the literature due to the difficulty of characterizing these locally, since measuring each component of the coffee fruit structure (mesocarp-exocarp and bean) is not an easy task. However, determining the elastic properties (of the mesocarp-exocarp and bean) could help create realistic simulations as an initial estimation for selective coffee harvesting studies. The present work aims to bridge the gap in the mechanical characterization of the sub-structures of the coffee fruits by assessing the elastic properties of the mesocarp-exocarp and bean. Indentation tests were performed on eighty Coffee arabica L. var. Castillo fruits and beans, which were previously classified into four ripening stages using fruit color data in the CIELab color space. Young's modulus and indentation hardness of the mesocarp-exocarp structure and beans were calculated, applying the Oliver and Pharr indentation model and Hertz contact theory. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2023 Electronic address https://www.mdpi.com/2077-0472/12/4/502
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