Research Article Open Access

Compressive Load Resistance Characteristics of Rice Grain

Sumpun Chaitep1, Chaiy Rungsiyakull1 and Pipatpong Watanawanyoo2
  • 1 Mechanical Engineering Department, Faculty of Engineering, Chiang Mai University, Thailand
  • 2 College of Engineering, Rangsit University, Thailand


Investigation was made to observe the compressive load property of rice gain both rough rice and brown grain. Six rice varieties (indica and japonica) were examined with the moisture content at 10-12%. Compressive loads with reference to a principal axis normal to the thickness of the grain were conducted at selected inclined angles of 0°, 15°, 30°, 45°, 60° and 70°. The result showed the compressive load resistance of rice grain based on its characteristic of yield strength, of which can be expressed as relationships of the shear strength. Two similar experiments, both parallel and cross grain positions were conducted on the rough rice and brown rice. Result showed the trend of load resistance of rice grain, which may be used as an important parameter for the design of related post-harvest machines. The properly designed machine in conjunction with this compressive strength might lead to the minimal use of power consumption of the machines as well as lowering the broken rice during the rice mill processes.

American Journal of Agricultural and Biological Sciences
Volume 3 No. 1, 2008, 325-329


Submitted On: 30 January 2007 Published On: 31 March 2008

How to Cite: Chaitep, S., Rungsiyakull, C. & Watanawanyoo, P. (2008). Compressive Load Resistance Characteristics of Rice Grain. American Journal of Agricultural and Biological Sciences, 3(1), 325-329.

  • 5 Citations



  • Rough rice
  • Brown rice
  • Shear resistance of rice
  • Compressive load
  • Principal axis