An Experimental Study of Pressuremeter Testing Under Polyaxial Boundary Stress Condition

2018 ◽  
pp. 449-457
Author(s):  
Lang Liu ◽  
Haifeng Fu ◽  
Rick Chalaturnyk ◽  
Dingwei Weng ◽  
Gonzalo Zambrano ◽  
...  
Keyword(s):  
Experimental Study ◽  
Stress Condition ◽  
Boundary Stress

Experimental study on rock-like materials fragmentation by electric explosion method under high stress condition

2019 ◽  
Vol 356 ◽  
pp. 750-758 ◽  
Author(s):  
Jianyu Peng ◽  
Fengpeng Zhang ◽  
Guangliang Yan ◽  
Zhaoguo Qiu ◽  
Xinghang Dai
Keyword(s):  
Experimental Study ◽  
Stress Condition ◽  
High Stress ◽  
Electric Explosion ◽  
Explosion Method ◽  
High Stress Condition

Experimental Study on Mechanical Behavior of the Intact Loess

2011 ◽  
Vol 374-377 ◽  
pp. 412-415
Author(s):  
Yan Wang ◽  
Shan Hua Xu ◽  
Yu Ding Hu
Keyword(s):  
Experimental Study ◽  
Mechanical Behavior ◽  
Water Content ◽  
Stress Condition ◽  
Engineering Properties ◽  
Water Sensitivity ◽  
Mechanics Characteristic ◽  
Mechanical Characters ◽  
Intact Loess

As a “special earth”, the water sensitivity of loess is an improtant factor influencing its mechanical characters and engineering properties. Through carrying on tests on the FSY30 non-saturated triaxial instrume, this paper shows ~ and ~ curves of the intact loess under different water contents.Then, it is found that the mechanics characteristic of Q3 loess is mainly influenced by the stress condition as well as the water content condition. In addition, the mechanics behavior of intact Q3 loess appears over-consolidated feature under low water content and low cell pressure.

An experimental study of failure and softening in sand under three-dimensional stress condition

2008 ◽  
Vol 10 (3) ◽  
pp. 187-195 ◽  
Author(s):  
De’an Sun ◽  
Wenxiong Huang ◽  
Yangping Yao
Keyword(s):  
Experimental Study ◽  
Stress Condition ◽  
Three Dimensional

Experimental study on the restoration from a tilt-azimuth series for improvement in resolution

1995 ◽  
Vol 53 ◽  
pp. 636-637
Author(s):  
Norio Baba ◽  
Norihiko Ichise ◽  
Syunya Watanabe
Keyword(s):  
Experimental Study ◽  
Spherical Aberration ◽  
Incident Beam ◽  
Optical Parameters ◽  
Beam Tilting ◽  
Illumination Method ◽  
Restoration Method ◽  
Illumination Mode

The tilted beam illumination method is used to improve the resolution comparing with the axial illumination mode. Using this advantage, a restoration method of several tilted beam images covering the full azimuthal range was proposed by Saxton, and experimentally examined. To make this technique more reliable it seems that some practical problems still remain. In this report the restoration was attempted and the problems were considered. In our study, four problems were pointed out for the experiment of the restoration. (1) Accurate beam tilt adjustment to fit the incident beam to the coma-free axis for the symmetrical beam tilting over the full azimuthal range. (2) Accurate measurements of the optical parameters which are necessary to design the restoration filter. Even if the spherical aberration coefficient Cs is known with accuracy and the axial astigmatism is sufficiently compensated, at least the defocus value must be measured. (3) Accurate alignment of the tilt-azimuth series images.

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