| A review of the technology of soil stress measurement instruments |
| Paper ID : 1086-NICAME1402 |
| Authors: |
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بهنام خسروی1, Mojtaba Naderi *2 1گروه مهندسی مکانیک بیوسیستم- دانشکده کشاورزی- دانشگاه شهرکرد 2Department of Machanical Engineering of Biosystems, Faculty of Agriculture |
| Abstract: |
| The knowledge of the stress transmission and propagation in soil under vehicular traffic is important for agricultural machinery engineers from two aspects: 1- soil traffic management and soil compaction, 2- the design of agricultural machines including the selection of the tire type, the number of wheel axles based on the weight of the vehicle in such a way that the risk of compaction to be controlled. One of the basic steps in studying the soil compaction under the traffic of farm machines is to accurately measure the stress in the soil. Among the most important factors in the compaction of agricultural soils is the movement of heavy agricultural machines on the soil, especially in undesirable moisture conditions. T Since compaction, especially in deep layers, cannot be easily removed and requires a lot of energy, the best solution to deal with the problem of soil compaction is to prevent it. The risk of agricultural soil compaction basically depends on the amount of stress (force per unit area) applied during the movement of machines. In this article, the types of instruments used to measure soil stress are reviewed and the advantages and disadvantages of each are discussed. The use of fluid pressure transducers can basically be a more useful instrument for measuring the stress in the soil because its installation in the soil is associated with less soil disturbance and the concentration of stress around it than that of load cell transducers. |
| Keywords: |
| Stress propagation, soil compaction, stress probe, load cell |
| Status : Paper Accepted (Poster Presentation) |
