THREE-DIMENSIONAL MEASUREMENT RESULTS USING MOBILE SENSING UNIT AND ITS HIGH ACCURACY BY SLAM

2018 ◽  
Vol 74 (2) ◽  
pp. II_110-II_117
Author(s):  
Yoshinori TSUKADA ◽  
Satoshi KUBOTA ◽  
Shigenori TANAKA ◽  
Yoshimasa UMEHARA
Keyword(s):  
Three Dimensional ◽  
High Accuracy ◽  
Mobile Sensing ◽  
Dimensional Measurement ◽  
Measurement Results ◽  
Three Dimensional Measurement

Calculation Approach of Optimum Cutting Surfaces of Extra Length of Pipe Spools

2013 ◽  
Author(s):  
Takashi Kitahara ◽  
Yuichi Yamamoto ◽  
Yasutaka Tagawa
Keyword(s):  
Power Plant ◽  
Geometric Analysis ◽  
Three Dimensional ◽  
High Accuracy ◽  
Modeling Method ◽  
Construction Site ◽  
Calculation Algorithm ◽  
Dimensional Measurement ◽  
Optimum Cutting ◽  
Three Dimensional Measurement

To connect a pipe spool between existing pipes with high accuracy for power plant constructions, a calculation approach which figures out appropriate cutting positions and angles of extra length areas of the spool has been developed. In this approach, center positions and axes of end surfaces are modeled numerically based on three-dimensional measurement of each pipe, and the appropriate cutting surfaces are calculated by geometric analysis of the models with considering for ease of cutting work at the construction site. This paper described a modeling method of pipes, a calculation algorithm of the proper cutting surfaces of the spool, and a verification result of the calculation.

THREE-DIMENSIONAL MEASUREMENT OF COLUMNAR JOINTING IN THE BISHOP TUFF, OWENS RIVER GORGE, CALIFORNIA

2017 ◽  
Author(s):  
Antonio M. Bird ◽  
◽  
Katherine A. Kelker ◽  
Elizabeth S. Brogden ◽  
Jeff Glazner ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Bishop Tuff ◽  
Columnar Jointing ◽  
Dimensional Measurement ◽  
Three Dimensional Measurement

scholarly journals The first observation of 4D tomography measurement of plasma structures and fluctuations

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Chanho Moon ◽  
Kotaro Yamasaki ◽  
Yoshihiko Nagashima ◽  
Shigeru Inagaki ◽  
Takeshi Ido ◽  
...  
Keyword(s):  
Steady State ◽  
Three Dimensional ◽  
Axial Direction ◽  
Axial Position ◽  
Entire Cross Section ◽  
Helicon Plasma ◽  
Emission Profile ◽  
Dimensional Measurement ◽  
Tomography System ◽  
Three Dimensional Measurement

AbstractA tomography system is installed as one of the diagnostics of new age to examine the three-dimensional characteristics of structure and dynamics including fluctuations of a linear magnetized helicon plasma. The system is composed of three sets of tomography components located at different axial positions. Each tomography component can measure the two-dimensional emission profile over the entire cross-section of plasma at different axial positions in a sufficient temporal scale to detect the fluctuations. The four-dimensional measurement including time and space successfully obtains the following three results that have never been found without three-dimensional measurement: (1) in the production phase, the plasma front propagates from the antenna toward the end plate with an ion acoustic velocity. (2) In the steady state, the plasma emission profile is inhomogeneous, and decreases along the axial direction in the presence of the azimuthal asymmetry. Furthermore, (3) in the steady state, the fluctuations should originate from a particular axial position located downward from the helicon antenna.

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