Design and Deformation Analysis of Disk-type Torque Sensor

Outburst cavity formed during coal and gas outburst can be pear shaped, elliptical, or just like an irregularly elongated ellipsoid, its capacity is always smaller than the volume of ejected coal. And the gas emission quantity is almost 4 to 10 times as gas content in ejected coal. These are two different expressions of the same problem. To find the reasons for the decrease of outburst cavity volume and the increase of gas emission quantity per ton, by using the finite element code ANSYS, the damage zone and the failure zone of the outburst cavity were determined based on the static and dynamic combination method. In this paper, the reason for the decrease of the outburst volume was explained.

Download Full-text

Design and research of a novel non-contact vertical inductive torque sensor

Measurement ◽

10.1016/j.measurement.2021.109252 ◽

2021 ◽

pp. 109252

Author(s):

Chao Zhang ◽

Zhipeng Li ◽

Jie Chen ◽

Feng Qiu ◽

Shaodan Na

Keyword(s):

Torque Sensor

Download Full-text

Interpolation using Gaussian radial basis functions with optimized shape parameter applied in vertical deformation analysis

Geodesy and Geodynamics ◽

10.1016/j.geog.2021.02.004 ◽

2021 ◽

Author(s):

M.A. Khalili ◽

B. Voosoghi

Keyword(s):

Radial Basis Functions ◽

Shape Parameter ◽

Basis Functions ◽

Deformation Analysis ◽

Vertical Deformation ◽

Radial Basis

Download Full-text

A New Approach for Cylindrical Steel Structure Deformation Monitoring by Dense Point Clouds

Remote Sensing ◽

10.3390/rs13122263 ◽

2021 ◽

Vol 13 (12) ◽

pp. 2263

Author(s):

Dongfeng Jia ◽

Weiping Zhang ◽

Yuhao Wang ◽

Yanping Liu

Keyword(s):

Steel Structure ◽

Steel Structures ◽

Point Clouds ◽

Deformation Monitoring ◽

Deformation Analysis ◽

Relative Deformation ◽

Structure Deformation ◽

Single Time ◽

Cylindrical Steel ◽

Cylinder Fitting

As fundamental load-bearing parts, the cylindrical steel structures of transmission towers relate to the stability of the main structures in terms of topological relation and performance. Therefore, the periodic monitoring of a cylindrical steel structure is necessary to maintain the safety and stability of existing structures in energy transmission. Most studies on deformation analysis are still focused on the process of identifying discrepancies in the state of a structure by observing it at different times, yet relative deformation analysis based on the data acquired in single time has not been investigated effectively. In this study, the piecewise cylinder fitting method is presented to fit the point clouds collected at a single time to compute the relative inclination of a cylindrical steel structure. The standard deviation is adopted as a measure to evaluate the degree of structure deformation. Meanwhile, the inclination rate of each section is compared with the conventional method on the basis of the piecewise cylinder fitting parameters. The validity and accuracy of the algorithm are verified by real transmission tower point cloud data. Experimental results show that the piecewise cylinder fitting algorithm proposed in this research can meet the accuracy requirements of cylindrical steel structure deformation analysis and has high application value in the field of structure deformation monitoring.

Download Full-text