Effects of Moisture Content, Loading Rate, and Grain Orientation on Fracture Resistance of Paddy (<i>Oryza Sativa</i>L.) Grain

Zareiforoush, Hemad; Komarizadeh, M.H.; Alizadeh, Mohammad; Tavakoli, Hamed; Masoumi, M

doi:10.1080/10942911003754643

Cited by 20 publications

(26 citation statements)

References 21 publications

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“…Differences in the obtained values may result from different grain moistures, loading speeds of the samples and the type of rice used in the tests. The average value of rupture work W Fmax (28.03 mJ) is similar to the values presented, among others, in the work of Nasirahmadi et al [26] (26.9 mJ for Fajr and 28.5 mJ for Tarom) and Sadeghi et al [19] (24.45 mJ for Sazandegi) as well as in the work of Zareiforoush et al [30,31], where the rupture energy assumed values of about 30 mJ. Figures 12-18 summarize the results of mechanical properties of rice grains depending on its volume.…”

Section: The Results Of Testing the Strength Properties Of Rice Grainsupporting

confidence: 88%

“…The results obtained for rice dimensions a1, a2, and a3, are similar, although slightly smaller than those reported in the literature by other researchers, e.g., Sadeghi et al, Zareiforoush et al, and Zeng et al [18,19,30]. Differences in dimensions may be caused primarily by the difference in the varieties and types of rice grains studied, the country of origin (the study of rice originated from Burma), grain humidity and growing conditions of grains (e.g., extensive, intensive cultivation, weather conditions that affect the grain size).…”

Section: Results Of Research On the Physical Properties Of Rice Grainsupporting

confidence: 74%

“…Differences in the obtained values may result from different grain moistures, loading speeds of the samples and the type of rice used in the tests. [30,31], where the rupture energy assumed values of about 30 mJ. Figures 12-18 summarize the results of mechanical properties of rice grains depending on its volume.…”

Section: The Results Of Testing the Strength Properties Of Rice Grainmentioning

confidence: 99%

“…It is noteworthy that the grains were tested for only one orientation of grains in the strength testing machines. It is expected that the longitudinal and transverse orientation of grains would provide different values of destructive compression, forces and strength [28][29][30].…”

Section: Average Of W Fmaxmentioning

confidence: 99%

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Mechanical and Processing Properties of Rice Grains

et al. 2020

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Strength properties of grains have a significant impact on the energy demand of grinding mills. This paper presents the results of tests of strength and energy needed the for destruction of rice grains. The research aim was to experimentally determine mechanical and processing properties of the rice grains. The research problem was formulated in the form of questions: (1) what force and energy are needed to induce a rupture of rice grain of the Oryza sativa L. of long-grain variety? (2) what is the relationship between grain size and strength parameters and the energy of grinding rice grain of the species Oryza sativa L. long-grain variety? In order to find the answer to the problems posed, a static compression test of rice grains was done. The results indicate that the average forces needed to crush rice grain are 174.99 kg m·s−2, and the average energy is 28.03 mJ. There was no statistically significant relationship between the grain volume calculated based on the volumetric mass density Vρ and the crushing energy, nor between the volume Vρ and other strength properties of rice grains. In the case of Vs, a low negative correlation between strength σmin and a low positive correlation between the power inducing the first crack were found for the grain size related volume. A low negative correlation between the grain thickness a3, stresses σmin and work WFmax was found as well as a low positive correlation between thickness a3 and the force inducing the first crack Fmin.

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Section: The Results Of Testing the Strength Properties Of Rice Grainsupporting

confidence: 88%

Section: Results Of Research On the Physical Properties Of Rice Grainsupporting

confidence: 74%

Section: The Results Of Testing the Strength Properties Of Rice Grainmentioning

confidence: 99%

Section: Average Of W Fmaxmentioning

confidence: 99%

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Mechanical and Processing Properties of Rice Grains

et al. 2020

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“…The IMCinduced change in Fr ranged from 23.48 to 28.52% and increased by 3.46 to 13.77% as the air velocity increased from 0.6 to 0.8 m s -1 . The rupture force of barnyard millet kernel (17.87-25.20 N), soybean (191.09-270.66 N), paddy grain (88.33-167.70 N in horizontal orientation), and terebinth seed (44.69-135.62 N) were reported by Singh et al (2010), Tavakoli (2009), Zareiforoush et al (2012), and Chayjan and Kaveh (2014), respectively. And Minaei 2014) indicated that the rupture force of corn decreased from 345.405 to 271.198 N with an increase in drying temperature form 40 to 70°C.…”

Section: Resultsmentioning

confidence: 97%

Accurate measurements and establishment of a model of the mechanical properties of dried corn kernels

Feng

et al. 2019

Int. Agrophys.

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Mechanical drying significantly affects the mechanical properties of corn kernels. Improper drying may result in material losses and in a decline in quality due to pressure, collisions, and other factors during subsequent storage and transport operations. A literature survey revealed that at time of writing the characteristics of dried corn kernels have not been systematically and fully studied. In this paper, an orthogonal rotation combination test scheme was designed. Using a multiparameter controllable thin layer drying test bench, corn was dried under different conditions (temperature 30-60°C, relative humidity 30-60%, air velocity 0.46-0.94 m s-1 , initial moisture content of corn of 20-30% w.b., tempering ratio 0-3). Then, a texture analyser was used to measure the mechanical properties (rupture force, rupture energy, modulus of elasticity and brittleness) of the dried corn kernels. Relationship models were established for the rupture force, rupture energy, modulus of elasticity and brittleness and drying conditions of corn kernels. An increase in the drying temperature from 30 to 60°C increased the rupture energy, elastic modulus, and brittleness of the corn kernels by 19.11, 11.76, and 4.02%, respectively; an increase in the drying relative humidity from 30 to 60% increased the rupture force, energy, modulus of elasticity and brittleness by 15.

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On‐farm cropping sensor‐based smart device for cutting energy measurement of cereal crops

et al. 2023

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A device was developed for on‐field cutting energy measurement of cereal crops. Physical, engineering, and anatomical properties of prominent rice (Oryza sativa L.) cultivars of India were studied at different stem positions using a factorial CRD design. The effects of changes in different operational parameters, including blade bevel angle (15°, 20°, and 25°), cutting angle (25°, 30°, and 35°) and cutting velocity (2.9, 3.44, and 4.1 m s−1) on cutting force and cutting energy of rice stalk were also studied. Cutting angle indicated the angle of inclination of cutting edge to the horizontal at blade‐crop interface. The assessment of these properties and parameters in relation to crop cutting energy, led to the development of a smart device for energy measurement up to a size of three skills. This device consisted of a compression system, crop holding unit, cutting unit, and sensors to measure the force, speed, and cutting height. The device's measurement abilities were evaluated with wheat (Triticum aestivum L.) stalks at different cutting speeds (0.83, 1.16, and 1.5 m s−1 and stem heights (10, 20, and 30 cm from ground). Values for cutting force and energy ranged from 1.85 to 1.45 N and 10.81 to 8.48 N mm–1, respectively. At all stem heights, the cutting force and cutting energy ranged from 1.79 to 1.44 N and 11.92 to 6.74 N mm–1, respectively. The ultrasonic sensor provided real time cutting height data with an accuracy of 97.5%, while the gyroscope sensor had an accuracy of 94.29% for on‐field cutting angle measurement.

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Effects of Moisture Content, Loading Rate, and Grain Orientation on Fracture Resistance of Paddy (Oryza SativaL.) Grain

Cited by 20 publications

References 21 publications

Mechanical and Processing Properties of Rice Grains

Mechanical and Processing Properties of Rice Grains

Accurate measurements and establishment of a model of the mechanical properties of dried corn kernels

On‐farm cropping sensor‐based smart device for cutting energy measurement of cereal crops

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