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MOISTURE-DEPENDENT MECHANICAL PROPERTIES OF PIGEON PEA GROWN IN NIGERIA

Okey Francis, C.C. Anyadike, Charles Obinna Onyeke

Open publisher page 7 citations

Abstract

some mechanical properties of pigeon pea (cajanus cajan) was investigated. These properties are important in the design of appropriate machines for harvesting, processing, transporting, packaging and storage of pigeon pea. The mechanical properties were significantly dependent (p<0.05) on the moisture content. The properties – rupture force, compressive strength, maximum displacement, strain at maximum load and the Young’s modulus,- had an inverse relationship with the moisture content. As the moisture content increased, the mean value of the mechanical properties decreased. The mean values recorded as the moisture content decreased from 10 – 25 % (w.b) were from 159.10 – 69.30 N for the rupture force, 981.26 – 437.57 N/mm 2 for the compressive strength, 4.86 – 2.75 for strain at maximum load, 3.25 – 1.82 mm for maximum displacement and 457.05 – 254.68 N/mm 2 for the Young’s modulus.

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What this paper is about

some mechanical properties of pigeon pea (cajanus cajan) was investigated. These properties are important in the design of appropriate machines for harvesting, processing, transporting, packaging and storage of pigeon pea. The mechanical properties were significantly dependent (p<0.05) on the moisture content. The properties – rupture force, compressive strength, maximum displacement, strain at maximum load and the Young’s modulus,- had an inverse relationship with the moisture content. As the moisture content increased, the mean value of the mechanical properties decreased. The mean values recorded as the moisture content decreased from 10 – 25 % (w.b) were from 159.10 – 69.30 N for the rupture force, 981.26 – 437.57 N/mm 2 for the compressive strength, 4.86 – 2.75 for strain at maximum load, 3.25 – 1.82 mm for maximum displacement and 457.05 – 254.68 N/mm 2 for the Young’s modulus.

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Available abstract

some mechanical properties of pigeon pea (cajanus cajan) was investigated. These properties are important in the design of appropriate machines for harvesting, processing, transporting, packaging and storage of pigeon pea. The mechanical properties were significantly dependent (p<0.05) on the moisture content. The properties – rupture force, compressive strength, maximum displacement, strain at maximum load and the Young’s modulus,- had an inverse relationship with the moisture content. As the moisture content increased, the mean value of the mechanical properties decreased. The mean values recorded as the moisture content decreased from 10 – 25 % (w.b) were from 159.10 – 69.30 N for the rupture force, 981.26 – 437.57 N/mm 2 for the compressive strength, 4.86 – 2.75 for strain at maximum load, 3.25 – 1.82 mm for maximum displacement and 457.05 – 254.68 N/mm 2 for the Young’s modulus.

Key concepts: Angle of repose, Sphericity, Bulk density, Water content, Cajanus, Particle density, Porosity, Materials science

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