A New Method to Test the Fracture Energy Based on Direct Tension
Fracture energy, which reflects the split property of brittle materials, is a significant parameter. For present tests of measuring it, the indirect test itself has insuperable disadvantage, while the direct tension test, in spite of an ideal way, is too limited to be widely applied in ordinary labs for its over high requirement for the test machine. The paper analyzed the disadvantage of the direct tension machine and improved it: a new elastic foundation of lower clamper replaced the original rigid one. Using the improved machine, the complete stress-strain tensile curve of the brittle materials was obtained easily. Further, the fracture energy could be calculated. Basing on studies, the paper recommended it may as well to get the fracture energy by improved direct tension machine.
fracture Energy direct tension brittle materialsl elastic foundation
Zhonghu Zhao
Key Laboratory of Mechanics on Disaster and Environment in Western China attached to the Ministry of Education of China (Lanzhou University) School of Civil Engineering and Mechanics, Lanzhou University, Lanzhou, Gansu 730000, P.R.China
国际会议
上海
英文
1376-1379
2011-10-21（万方平台首次上网日期，不代表论文的发表时间）