Grūdinių kultūrų mechaninių savybių tyrimas įrenginiu TRM 500

Abstract

Getting in the harvest is essential to minimize grain being mechanically damagec One of the main material's mechanical properties is elasticity, for grain as well. Therefor* many researchers grain resistance to mechanical stress estimate by Young's modulus. Ma tests are carried out using dynamical testing methods, generally by pressure, crushing grai with a cylindrical indenter, or by pressing the sample between the two plain surfaces an measuring the deformation and the pressure force. Using sensitive device, the automata measuring mode the pressed body deformation and the pressure force value can be obtairs as deformation schedule, which from can easily be found strength, residual deformation* elastic modulus of grain. Therefore, the tribological test machine TRM 500 (placed : Mechanical Department) was used for the grain pressure testing. The wheat and bar« grain strength limits - the breaking load of grain husk (100 ± 20N wheat, barley \50~S 20N) was found and the residual deformation (wheat - 90 u m and 50 ^ m for barley).