Bending and Shearing Characteristics of Sunflower Stalk Residue

Ince, Ahmet; Uğurluay, Selçuk; Güzel, Emin; Özcan, Muharrem

doi:10.1016/j.biosystemseng.2005.07.003

Cited by 81 publications

(62 citation statements)

References 12 publications

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“…This may be attributable to decreased moisture level in the stalk with increased harvest date, causing the texture of the stalk tissue to become more rigid. This result is similar reports on other plant species (Chen et al, 2004;Ince et al, 2005). For both stalk sections, the harvest date had a significant effect on the bioyield force (P < 0.05).…”

Section: Resultssupporting

confidence: 90%

Effect of Harvest Date and Stalk Section on Selected Strength Characteristics of Turkish Oregano (Origanum Onites L)

Yılmaz

Jasinskas

2016

Afr J Tradit Complement Altern Med

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Background: The time required to harvest plant crops is important to the plant properties. It is affected by design of the harvest equipment and the desire for high-quality products with low energy usage. Materials and Methods: Strength characteristics of Origanum onites L., an important medicinal aromatic plant, harvested on 2, 9, 16 and 23 July, 2012-2014 (H1, H2, H3 and H4, respectively) were measured at the bottom and top sections of the stalk. Measurements included maximum force, bio-yield force, shearing force, bending stress, shearing stress, shearing energy, and shearing deformation. Results: The highest maximum force (35.17 N) was at H4 on the bottom section, and the lowest was at H1 on the top. Maximum values for bioyield force, shearing force, and bending stress were at H4 on the bottom section, and corresponding minimum values were at H1 on the top section. Shearing stress decreased at successive harvest dates for both stalk sections. The minimum shearing energy was at H4, (0.13 J and 0.06 J for bottom and top, respectively). Strength measurements for bottom sections of the stalk were greater than those for top sections. Conclusion: When reduced harvesting force is needed because of harvester design or harvest procedures, harvesting near the top of the stalk is recommended.

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Section: Resultssupporting

confidence: 90%

Effect of Harvest Date and Stalk Section on Selected Strength Characteristics of Turkish Oregano (Origanum Onites L)

Yılmaz

Jasinskas

2016

Afr J Tradit Complement Altern Med

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“…The maximum values of shear properties of plants have been carried out during their force and energy for cutting of hemp were 243 N and 2.1 growth using failure criteria (force, stress and energy) J, respectively. Ince et al [8] reported that the maximum or their Young's modulus and the modulus of rigidity.…”

Section: Introductionmentioning

confidence: 99%

Influence of Knife Bevel Angle, Rate of Loading and Stalk Section on Some Engineering Parameters of Lilium Stalk

Heidari

Chegini²,

Kianmehr³

et al. 2012

IJEE

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Some physical and mechanical property testing of main stalks of Lilium was conducted to provide information for future automatic machine design. Shear, compression and bending properties of Lilium stalks were determined with using a universal testing machine. The experiments were conducted at three rate of loading levels from 30 to 50 mm/min, three knife bevel angle levels from 30 to 60 degree and at two levels the stalk; upper and lower. The results showed that all the mentioned above parameters had significant effect on the measured mechanical properties (P<0.01). In all three loading rate, an increasing the shear strength and specific cutting energy were observed as the knife bevel angle increased. The highest compression strength and specific compressing energy were 6.86 MPa and 21.34 mJ/mm at the lower level, while the lowest 2 compression strength and specific compressing energy were 2.90 MPa and 10.69 mJ/mm at the upper level. As the loading rate of the stalk increased, the bending strength decreased, indicating a reduction in the brittleness of the stalk. The average values for modulus of elasticity were found to be 23.48 and 15.96 MPa for stalk regions of upper and lower, respectively.

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“…The mechanical properties of maize stalk vary with its moisture content (Ince et al 2005). Two moisture levels were tested in this study and were 70% w.b.…”

Section: Experimental Equipment and Proceduresmentioning

confidence: 99%

Tensile Properties of Maize Stalk Rind

Zhang¹,

Yang²,

Zhang³

et al. 2016

BioResources

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Experiments were carried out to measure the tensile properties of maize stalk rind. Two varieties of maize stalk (SD 12 and SD 9) and two moisture contents (fresh and air-dried) were tested. From each maize stalk sample, nine specimens (test coupons) of stalk rind were prepared to represent nine internodes from the bottom to the top of the maize stalk. The rind specimens were subjected to uniaxial tensile loading at a slow rate of 3 mm/min. From the recorded load-elongation curves, tensile stresses, modulus of elasticity, and tensile energy were determined. It was found that maize stalk rind exhibited elastic-plastic behavior, i.e., stress initially increased with strain in a linear fashion, and then nonlinearly until rupture. The measured ultimate tensile stress ranged from 178.15 to 80.53 MPa (average 122.26 MPa), elastic modulus from 35.01 to 11.38 GPa (average 19.32 GPa), and tensile energy from 0.004 to 0.099 J (average 0.032 J). Tensile strength, elastic modulus, and tensile energy decreased from the bottom to the top of stalk. There was a significant difference in tensile strength, modulus of elasticity, and tensile energy among two varieties and two moisture contents.

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Bending and Shearing Characteristics of Sunflower Stalk Residue

Cited by 81 publications

References 12 publications

Effect of Harvest Date and Stalk Section on Selected Strength Characteristics of Turkish Oregano (Origanum Onites L)

Effect of Harvest Date and Stalk Section on Selected Strength Characteristics of Turkish Oregano (Origanum Onites L)

Influence of Knife Bevel Angle, Rate of Loading and Stalk Section on Some Engineering Parameters of Lilium Stalk

Tensile Properties of Maize Stalk Rind

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