Fruit removal forces of early stage pickling cucumbers for harvest automation

Jakob, Martina; Geyer, Martin

doi:10.31545/intagr/131867

Cited by 3 publications

(2 citation statements)

References 17 publications

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“…Finally, a new physical property called the "cylindricity" factor was proposed, this determines that the plant material volume will also partially impact its mechanical properties. Jakob and Geyer (2021) analysed the removal force required for different cucumber varieties and in different years in the process of mechanical harvesting. It would inhibit the plant's growth if the average fruit removal force required for picking was too high.…”

Section: Introductionmentioning

confidence: 99%

Effects of mechanical differences in sugarcane on the quality of mechanical harvesting

Li¹,

Li²,

Lin³

et al. 2023

Int. Agrophys.

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The mechanization of the whole process of sugarcane harvesting is an integral part of reducing the cost of sugarcane production. In order to select sugarcane strains suitable for mechanized harvesting, in this experiment, a dynamic resistance strain gauge and other equipment determined the related mechanical property parameters such as density, elastic modulus, and Poisson's ratio of different sugarcane varieties. Ansys/ explicit dynamics were used to establish a finite element model of the disc cutting device and to simulate the forces exerted on the stalk during sugarcane harvesting and also the quality of the cut section. Then, after obtaining the regression equation analysis and the response surface through the cross-section mass, the field harvesting experiment verifies the simulation results. The results show that the density, elastic modulus, and Poisson's ratio significantly affect the cutting quality within the three types of mechanical parameters. Through response surface analysis, when the elastic modulus is 92 MPa, the density is 1145 kg m -3 , the Poisson's ratio is 0.404, the best cutting quality was obtained, and the section flatness is 57.09%. According to the cross-sectional regression equation, the calculation results are as follows: Liucheng 05-136 > Yuetang 94-128 > Guitang 42, which is the same as the actual harvest quality results under the two planting modes. This indicated that the difference in the mechanical properties of the sugarcane would significantly affect the quality of mechanical harvesting, which provides a reference direction for selecting sugarcane varieties suitable for mechanized harvesting.K e y w o r d s: elastic modulus, Poisson's ratio, mechanized harvesting, finite element

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Section: Introductionmentioning

confidence: 99%

Effects of mechanical differences in sugarcane on the quality of mechanical harvesting

Li¹,

Li²,

Lin³

et al. 2023

Int. Agrophys.

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show abstract

“…Jakob, M.C. and M. Geyer selected the robot picking method of cucumbers by measuring the fruit removal forces of cucumbers [ 8 ]. Guocheng Bao tested the mechanical properties of sweet potato and obtained the collision loss mechanism of sweet potato, which provided a theoretical basis for the development of sweet potato harvester [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

Tests and analyses on physical and mechanical properties of fresh black fungus in picking season

Wang

Song²,

Wang³

et al. 2022

PLoS ONE

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This study determined the physical and mechanical characteristics of fresh black fungus during the harvesting season to provide basic data for the development of mechanical equipment for black fungus harvesting and processing. We have conducted a comprehensive test of black fungus cultivars “Heishan”. The mono-factor separation force experiments of black fungus and black fungus virgulate medium were conducted. It was noted that the tension angle was an important factor affecting the separation force, which was mainly distributed between 1.06 and 3.65 N. Besides, the average value of Poisson’s ratio of black fungus was measured to be 0.445 in the tensile test of black fungus leaves using image recognition and analysis techniques, with a test error within 2.5%; and the average value of tensile elastic modulus and shear elastic modulus of black fungus leaves was 0.947 MPa and 0.327 MPa, respectively; we also found that the average tensile strength at the root of black fungus was not significantly different from that at the leaf, which was around 0.436 MPa. In addition, it was obtained that the height and thickness dimensions of black fungus in the picking season conformed to a normal distribution, and concentrated around 34.39mm and 0.92mm respectively.

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Physical-mechanical characterization of coffee fruits Coffea arabica L. var. Castillo classified by a colorimetry approach

et al. 2022

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Fruit removal forces of early stage pickling cucumbers for harvest automation

Cited by 3 publications

References 17 publications

Effects of mechanical differences in sugarcane on the quality of mechanical harvesting

Effects of mechanical differences in sugarcane on the quality of mechanical harvesting

Tests and analyses on physical and mechanical properties of fresh black fungus in picking season

Physical-mechanical characterization of coffee fruits Coffea arabica L. var. Castillo classified by a colorimetry approach

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