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Mechanical properties of pellets in compression

Author

Listed:
  • Ľ. Kubík

    (Department of Physics, Faculty of Engineering, Slovak University of Agriculture in Nitra, Nitra, Slovak Republic)

  • V. Kažimírová

    (Department of Production Engineering, Faculty of Engineering, Slovak University of Agriculture in Nitra, Nitra, Slovak Republic)

Abstract

The paper deals with the evaluation of mechanical properties of the cylinder pellet samples. The pellets were made from hay by the granulating machine MGL 200 (Kovonovak) provided by the Department of Production Engineering, Slovak University of Agriculture in Nitra. The pellets were submitted to compressive loading. The compressive loading curves of dependencies of force on strain and force on time were realised by the test stand Andilog Stentor 1000. Certain mechanical parameters were determined, namely the diameter of the sample, length of the sample, force at 10% of strain, force in the first maximum of the force - strain curve, strain in the first maximum of the force - strain curve, modulus of elasticity, force in the inflex point of the force - time and force - strain curves and strain and stress in the inflex point of the force - time and force - strain curves. Significant correlations of the mechanical parameters were observed between the inflex point and the first maximum point of the loading curves. There were find out, the compression force, stress and strain in the inflex point significantly correlate with the force, stress and strain in the first maximum.

Suggested Citation

  • Ľ. Kubík & V. Kažimírová, 2015. "Mechanical properties of pellets in compression," Research in Agricultural Engineering, Czech Academy of Agricultural Sciences, vol. 61(SpecialIs), pages 1-8.
    • Handle: RePEc:caa:jnlrae:v:61:y:2015:i:specialissue:id:17-2015-rae
    DOI: 10.17221/17/2015-RAE
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    References listed on IDEAS

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    1. Cherney, Jerome H. & Verma, Vijay Kumar, 2013. "Grass pellet Quality Index: A tool to evaluate suitability of grass pellets for small scale combustion systems," Applied Energy, Elsevier, vol. 103(C), pages 679-684.
    2. Liu, Zhengang & Quek, Augustine & Balasubramanian, R., 2014. "Preparation and characterization of fuel pellets from woody biomass, agro-residues and their corresponding hydrochars," Applied Energy, Elsevier, vol. 113(C), pages 1315-1322.
    3. V. Kažimírová & T. Brestovič & R. Opáth, 2013. "Selected properties of agricultural biomass," Research in Agricultural Engineering, Czech Academy of Agricultural Sciences, vol. 59(SpecialIs), pages 60-64.
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