基于微米力学实验的页岩I型断裂韧度表征 1)
韩强*†**2)(
),屈展*†**,叶正寅**,董广建††
),屈展*†**,叶正寅**,董广建††
STUDY ON FRACTURE TOUGHNESS OF MODE I OF SHALE BASED ON MICRO-MECHANICAL TEST 1)
Han Qiang*†**2)(),Qu zhan*†**,Ye Zhengyin**,Dong Guangjian††
),Qu zhan*†**,Ye Zhengyin**,Dong Guangjian††
图7. 不同曲率半径下岩样弹性模量关系($E_{R}$为是压头曲率半径$R$下岩样的弹性模量,$E_{0}$为理想压头下的岩样弹性模量, $h_{c}$为压入深度
Fig. 7. The relationship between the radius of indenter and the test results of elastic modulus ($E_{R}$ is the elastic modulus of sample when the radius of indenter is $R$, $E_{0}$ is the elastic modulus under ideal condition, $h_{c}$ is indentation depth
