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加热—冷却过程对竹材弦向应变及表面粗糙度的影响(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2011年02期
Page:
124-126
Column:
研究简报
publishdate:
2011-03-28

Article Info:/Info

Title:
Effect of heating and cooling processes on tangential strain and surface roughness degree of bamboo
Author(s):
HAN Jian GAO Xitao
College of Material Science and Engineering, Central South University of Forestry and Technology, Changsha 410004 China
Keywords:
bamboo tangential strainsurface roughness degree process of heating—cooling
Classification number :
S781
DOI:
10.3969/j.jssn.1000-2006.2011.02.026
Document Code:
A
Abstract:
The tangential strains of bamboo in the process of heating and cooling were investigated through dynamic resistance strain gauge. Test results showed that the change of the tangential strain of bamboo with temperature presented mainly parabolic curve form, positive strains gradually increased below 80 ℃,and then decreased gradually,changed into negative strain after 120 ℃ in the process of heating. In the process of cooling the negative tangential strain of bamboo increased slowly from 150 ℃ to 100 ℃,and then rapidly increased from 100 ℃ to 30 ℃. In the process of heating and cooling the tangential strain of each piece was obviously different at the same temperature. The strain presented in the process of heating and cooling would increase the surface roughness degree of bamboo.

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Last Update: 2011-04-13