Cutting Tests of Kenaf Stems

Ghahraei, Omid; Ahmad, Desa; Khalina, A.; Suryanto, Hadi; Othman, Jamilah

doi:10.13031/2013.36252

Cited by 50 publications

(39 citation statements)

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“…This is similar to results reported by Prasad and Gupta (1975), Choi and Erbach (1986), Ghahraei et al, (2011), andNazari et al, (2008). The results similarly indicated that increase in moisture content of stalk led to a decrease in the Young's modulus, shearing force and the shearing energy.…”

Section: Mechanical Propertiessupporting

confidence: 90%

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Physical and Mechanical Properties of Kenaf Stems at Varying Moisture Contents

Dauda

Ahmad

Abdan

et al. 2014

Agriculture and Agricultural Science Procedia

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Section: Mechanical Propertiessupporting

confidence: 90%

“…The kenaf stems diameter decreased towards the top of the plant. Hence it was equally divided into three major parts; as upper, middle and lower (Ghahraei et al, 2011, Nazari et al, 2008.…”

Section: Mechanical Properties Determinationmentioning

confidence: 99%

Physical and Mechanical Properties of Kenaf Stems at Varying Moisture Contents

Dauda

Ahmad

Abdan

et al. 2014

Agriculture and Agricultural Science Procedia

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“…Knowing those properties will be useful for both manufacturers and consumers of food processing equipment. Especillay, information on plant properties and the power or energy requirement of equipment has been very valuable for selecting design and operational parameters (Persson, 1987;Emadi et al, 2004;Voicu et al, 2011;Ghahraei et al, 2011;Hoseinzadeh and Shirneshan, 2012). Perhaps, the stem of plants cutting energy is one of the main parameters for optimizing design of cutting elements in harvesting and pruning machines (Alizadeh et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Cutting Properties of Different Grape Varieties

Sessiz¹,

Esgici²,

Özdemir³

et al. 2015

AgricultForest

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SUMMARYThis study was conducted in order to determine the cutting properties such as cutting force, cutting strength, cutting energy of different wine grape branch (cutting) as fonction of moisture content, diamter and variety. The cutting properties were measured at three moisture content levels (35.2, 42.4, and 46 %), four cross-section area (12.56, 28.27, 50.26 and 78.54 mm 2 ) and eight wine grapes varieties (Tannat, Merlot, Cot, Chardonnay, Viognier, Cabernet Sauvignon, Shiraz, Cabarnet Franc). The results indicated that cutting force, cutting strength and cutting energy requirement varied from variety to variety. The maximum cutting force, cutting strength and cutting energy were obtained at Cabernet Franc grape variety as 1397.60 N, 21.68 MPa and 3.68 J, respectively. Followed by varieties Shiraz, Cabernet, Viognar Chardonnay, Cot, Merlot and Tannat, respectively. The minimum cutting force, cutting strength and cutting energy were obtained at Tannat grape variety as 981.65 N, 13.94 MPa, and 2.39 J, respectively. This effect could be related to higher stem wall thickness and cross-sectional area of Cabernet Franc compared to the other examined varieties.Therefore, the obtained data of cutting properties of grape branches are very important for the response of branch to the agricultural operation.

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“…El primero requiere dos elementos; cuchilla y contra-cuchilla, el segundo se realiza por impacto del elemento cortante sobre el producto. Ghahraei et al (2011) mencionan, en un estudio de corte de tallos de Kanopia (Hibiscus cannabis L.), que el ángulo de filo y el ángulo de ataque son los parámetros más importantes, en la confección de cuchillas de corte para materiales biológicos. Por su parte , en un estudio de corte en tallos de canola (Brassica napus), ensayan cuchillas con borde liso y dentado, y diferentes ángulos de filo.…”

Section: Introductionunclassified

Determinación de las características de las cuchillas de corte para mecanizar la cosecha de agave

Vaca

Hlawinska

Jaime

et al. 2018

Remexca

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ResumenEn México la cosecha de agave se realiza manualmente y se necesita una cuadrilla de jimadores, y para los productores representa 75% de los costos del cultivo. Saldaña (2012) plantea el diseñar una máquina que optimice tiempos y costos de cosecha, y que proporcione material vegetal troceado y desmenuzado con destino a la producción de; bioetanol, material comprimido (pellets) y otros subproductos. Dos actividades principales se realizan en la cosecha manual: corte de hojas y corte de piña; para esta última se ha estudiado el corte con cuchillas de características distintas, para seleccionar la que requiera menor fuerza de corte. Se diseñó un experimento con las variables independientes; espesor de cuchilla (3), ángulo de filo (2), perfil del borde cortante (2) y ángulo de ataque (3), utilizando una máquina universal de tensión para los ensayos. Se colocó un mecanismo donde se sujetan las cuchillas; y al desplazarse el conjunto la muestra de agave es cortada, registrándose la variable dependiente fuerza. Los ensayos se realizaron a secciones de piña de agave con dimensiones uniformes, y fueron realizados en 2010 en las instalaciones de la Universidad de Guanajuato. Utilizando el paquete estadístico SAS (SAS, 2001), se determinó la mejor combinación de los factores evaluados en el modelo. Los resultados muestran que la cuchilla de AbstractIn Mexico agave harvesting is done manually and it takes a crew of jimadores, and for the producers, this representing 75% of the costs of cultivation. Saldaña (2012) propose to design a machine to optimize harvest times and costs, and to provide cutting and shredding plant material destined for the production of: bioethanol, compressed material (pellets) and other byproducts. Two main activities are performed during manual harvesting: leaves and heart cuttings; for the latter, cutting blades of different characteristics have been studied to select the lowest required cutting force. An experiment was designed with independent variables; thickness of the blade (3), angle of cutting edge (2), the cutting edge side (2) and angle of attack (3), using a universal tension machine for testing. We fixed a mechanism where the blades are fastened; and when moving the set, the sample of gave is cut, recording the dependent variable force. Assays were performed on sections of agave´s heart with uniform dimensions, conducted in 2010 at the premises of the University of Guanajuato. Using the SAS statistical package (SAS, 2001) we determined the best combination of factors evaluated in the model. The results showed that, the blade thickness 6.35 mm (1/4 inch), with a cutting

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Cutting Tests of Kenaf Stems

Cited by 50 publications

References 0 publications

Physical and Mechanical Properties of Kenaf Stems at Varying Moisture Contents

Physical and Mechanical Properties of Kenaf Stems at Varying Moisture Contents

Cutting Properties of Different Grape Varieties

Determinación de las características de las cuchillas de corte para mecanizar la cosecha de agave

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