Controlling Rice Leaf Breaking Force by Temperature and Moisture Content to Reduce Breakage
Leaf fragments and grain mixture produced by rice threshing with a combine harvester seriously affects the subsequent grain cleaning efficiency. In this paper, rice leaf breaking force was tested at different temperatures and moisture contents to analyze the influence of temperature on the tensile p...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-04-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/10/5/628 |
| _version_ | 1797569379803594752 |
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| author | Zhong Tang Yu Li Ben Zhang Meilin Wang Yaoming Li |
| author_facet | Zhong Tang Yu Li Ben Zhang Meilin Wang Yaoming Li |
| author_sort | Zhong Tang |
| collection | DOAJ |
| description | Leaf fragments and grain mixture produced by rice threshing with a combine harvester seriously affects the subsequent grain cleaning efficiency. In this paper, rice leaf breaking force was tested at different temperatures and moisture contents to analyze the influence of temperature on the tensile properties of rice leaves. The overlapping regions of rice leaf breaking force and grain separation force at different temperatures were obtained. Based on the rice leaf breaking force, the effect of the temperature change on rice leaf with different moisture content was analyzed. The results showed that tensile strength of rice leaf decreased first, then increased and finally decreased from rice sheath to the top. The tensile breaking force of the leaf sheath was about 75 N (N is Newton, 1 N = 1 kg·m/s²). The tensile fracture resistance of rice leaf was shown to weaken with the increase of temperature. The influence of the moisture content on the mechanical properties of rice leaf during the process of temperature change was small. At 30 to 35 °C, the blade was the strongest tensile fracture resistance, which was the lowest probability of fracture under the same stress condition. At this time, the rice grain separation force has the least coincidence with the rice leaf resistance to breakage. According to the breaking force of different blade layers, the number of blade layers has a significant linear relationship with its tensile limit. Therefore, the overall fracture resistance of the multilayer blade can be improved by controlling the temperature and moisture content. |
| first_indexed | 2024-03-10T20:10:01Z |
| format | Article |
| id | doaj.art-f8c2f492c80945b9bcae196c9eb69b51 |
| institution | Directory Open Access Journal |
| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-03-10T20:10:01Z |
| publishDate | 2020-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agronomy |
| spelling | doaj.art-f8c2f492c80945b9bcae196c9eb69b512023-11-19T23:00:44ZengMDPI AGAgronomy2073-43952020-04-0110562810.3390/agronomy10050628Controlling Rice Leaf Breaking Force by Temperature and Moisture Content to Reduce BreakageZhong Tang0Yu Li1Ben Zhang2Meilin Wang3Yaoming Li4Key Laboratory of Modern Agricultural Equipment and Technology of Ministry of Education, Jiangsu University, Zhenjiang 212013, Jiangsu, ChinaKey Laboratory of Modern Agricultural Equipment and Technology of Ministry of Education, Jiangsu University, Zhenjiang 212013, Jiangsu, ChinaKey Laboratory of Modern Agricultural Equipment and Technology of Ministry of Education, Jiangsu University, Zhenjiang 212013, Jiangsu, ChinaKey Laboratory of Modern Agricultural Equipment and Technology of Ministry of Education, Jiangsu University, Zhenjiang 212013, Jiangsu, ChinaKey Laboratory of Modern Agricultural Equipment and Technology of Ministry of Education, Jiangsu University, Zhenjiang 212013, Jiangsu, ChinaLeaf fragments and grain mixture produced by rice threshing with a combine harvester seriously affects the subsequent grain cleaning efficiency. In this paper, rice leaf breaking force was tested at different temperatures and moisture contents to analyze the influence of temperature on the tensile properties of rice leaves. The overlapping regions of rice leaf breaking force and grain separation force at different temperatures were obtained. Based on the rice leaf breaking force, the effect of the temperature change on rice leaf with different moisture content was analyzed. The results showed that tensile strength of rice leaf decreased first, then increased and finally decreased from rice sheath to the top. The tensile breaking force of the leaf sheath was about 75 N (N is Newton, 1 N = 1 kg·m/s²). The tensile fracture resistance of rice leaf was shown to weaken with the increase of temperature. The influence of the moisture content on the mechanical properties of rice leaf during the process of temperature change was small. At 30 to 35 °C, the blade was the strongest tensile fracture resistance, which was the lowest probability of fracture under the same stress condition. At this time, the rice grain separation force has the least coincidence with the rice leaf resistance to breakage. According to the breaking force of different blade layers, the number of blade layers has a significant linear relationship with its tensile limit. Therefore, the overall fracture resistance of the multilayer blade can be improved by controlling the temperature and moisture content.https://www.mdpi.com/2073-4395/10/5/628mature ricerice threshinggrain separationleaf fragmenttensile test |
| spellingShingle | Zhong Tang Yu Li Ben Zhang Meilin Wang Yaoming Li Controlling Rice Leaf Breaking Force by Temperature and Moisture Content to Reduce Breakage Agronomy mature rice rice threshing grain separation leaf fragment tensile test |
| title | Controlling Rice Leaf Breaking Force by Temperature and Moisture Content to Reduce Breakage |
| title_full | Controlling Rice Leaf Breaking Force by Temperature and Moisture Content to Reduce Breakage |
| title_fullStr | Controlling Rice Leaf Breaking Force by Temperature and Moisture Content to Reduce Breakage |
| title_full_unstemmed | Controlling Rice Leaf Breaking Force by Temperature and Moisture Content to Reduce Breakage |
| title_short | Controlling Rice Leaf Breaking Force by Temperature and Moisture Content to Reduce Breakage |
| title_sort | controlling rice leaf breaking force by temperature and moisture content to reduce breakage |
| topic | mature rice rice threshing grain separation leaf fragment tensile test |
| url | https://www.mdpi.com/2073-4395/10/5/628 |
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