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Paper Information

Journal:   IRANIAN JOURNAL OF WOOD AND PAPER SCIENCE RESEARCH   fall 2016 , Volume 31 , Number 3 (56) #a00486; Page(s) 388 To 397.
 
Paper: 

Effect of moisture content and cutting speed on cutting energy and shear properties of four almond tree varieties wood

 
 
Author(s):  Koohkan Dehkordi h.r., MALEKI A.*, BESHARATI SH.
 
* Department of Mechanical Engineering of Biosystems, Faculty of Agriculture, University of Shahrekord, Iran
 
Abstract: 
In this research the effect of moisture content and cutting speed on the specific cutting energy and shearing stress for four varietiesof almond tree (Mamayy, Rabi, Sefid and Shahrodi12) wood was investigated. Shear properties of almond wood was measured using a universal testing machine (Santam STM20). One side beveled knife with the edge angle of 40 degree was used. Three moisture levels of 18, 25 and 45% (wet basis) wet basis, three cutting speeds 20, 30 and 40 mm/min and three stem diameter of 6, 9 and 12 mm were selected. The results of analysis of variance (ANOVA) showed that the effect specific cutting energy and shearing stress were significant (P<0. 01). The results showed that both specific cutting energy and shearing stress increased at higher moisture content. However, increasing cutting speed from 20 to 40 mm per minute reduced these values. Based on the results of the study, the average specific cutting energy were determined for varieties Mamayy, Rabi, Sefid and Shahrodi12 as 59. 41, 56. 088, 54. 38 and 77. 57 J/ mm2 respectively and shearing stress as 16. 01, 14. 34, 13. 73 and 19. 35 MPa, respectively. Also, according to shear test results, it can be expressed that the moisture content and the variety of almond tree are most effective and the effect cutting speed is relatively low.
 
Keyword(s): Wood almond,specific shearing energy,shearing stress,moisture content,cutting speed
 
References: 
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