Design, performance and applications of the GSI three-dimensional magnet measuring device

1994 ◽  
Vol 30 (4) ◽  
pp. 2650-2653 ◽  
Author(s):  
G. Moritz ◽  
H. Gaiser ◽  
F. Klos ◽  
B. Langenbeck ◽  
R. Steiner ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Measuring Device ◽  
Design Performance

scholarly journals A New Measuring Device for Three-dimensional Bite Force

1989 ◽  
Vol 7 ◽  
pp. 205-210 ◽  
Author(s):  
Masahiko Kikuchi ◽  
Makoto Watanabe ◽  
Yoshinori Hattori ◽  
Akio Kanuma
Keyword(s):  
Three Dimensional ◽  
Bite Force ◽  
Measuring Device

Investigation of Off-Design Performance of Vaned Diffusers in Centrifugal Compressors: Part II — A Low-Solidity Cascade Diffuser

2002 ◽  
Author(s):  
Jong-Sik Oh
Keyword(s):  
Secondary Flow ◽  
Flow Rate ◽  
Centrifugal Compressor ◽  
Three Dimensional ◽  
Flow Fields ◽  
Performance Parameters ◽  
Design Performance ◽  
And Performance ◽  
Compressor Map ◽  
Low Solidity Cascade Diffuser

As the second part of the author’s study, off-design behavior of the design and performance parameters in the low-solidity cascade diffuser in a centrifugal compressor is investigated. The experimental flange-to-flange compressor map serves the validity of application of the present CFD work to the detailed investigation of the low-solidity cascade diffuser. Some meanline design and performance parameters as well as three-dimensional internal secondary flow fields are studied when the flow rate is changed from deep choke to stall.

Three-Dimensional Virtual Assembly of Automatic Fuel Measuring Device of Diesel Engine Test Bed Based on VRML

2011 ◽  
Vol 138-139 ◽  
pp. 870-873
Author(s):  
Pei Gang Jiao ◽  
Shao Fu Shan ◽  
Qiu Hua Miao
Keyword(s):  
Diesel Engine ◽  
Three Dimensional ◽  
Virtual Assembly ◽  
Web Pages ◽  
Engineering System ◽  
Engine Test ◽  
Test Bed ◽  
Measuring Device ◽  
Assembly Method ◽  
Language Network

In this paper, three-dimensional automatic fuel measuring device of diesel engine test bed was created. The function of virtual assembly was achieved using virtual reality modeling language. Network virtual assembly can operate, browse and assemble automatic fuel measuring device remotely by embedding virtual assembly in web pages. The virtual assembly method presented in this paper can be easily extended to deal with many other problems in engineering system if control parameters are modified properly.

scholarly journals Three-dimensional facial capture using a custom-built photogrammetry setup: Design, performance, and cost

2020 ◽  
Vol 158 (2) ◽  
pp. 286-299
Author(s):  
Hans L.L. Wellens ◽  
Hanne Hoskens ◽  
Peter Claes ◽  
Anne Marie Kuijpers-Jagtman ◽  
Alejandra Ortega-Castrillón
Keyword(s):  
Three Dimensional ◽  
Design Performance

Development of Curvature Gap Estimation System for Deciding Thermal Forming Instructions of Ship Curved Shell Plates Using Laser Scanner

2018 ◽  
Vol 12 (3) ◽  
pp. 339-347 ◽  
Author(s):  
Kazuo Hiekata ◽  
Taiga Mitsuyuki ◽  
Kota Okada ◽  
Yoshiyuki Furukawa ◽  
◽  
...  
Keyword(s):  
Evaluation Method ◽  
Three Dimensional ◽  
Laser Scanner ◽  
Measuring Device ◽  
Outer Plate ◽  
Thermal Forming ◽  
Forming Accuracy ◽  
Plate Shape ◽  
Estimation System ◽  
Selection Of

A thick steel plate with a unique curvature was employed to make the outer shell of a ship. This curved shell plate is shaped one at a time by craftsmen carrying out plastic deformation using gas heating. The process includes evaluation of forming accuracy and selection of thermal forming instructions. Both are done using fitting molds called “wooden templates” in a manner that is qualitative but dependent on individual skills. Thus, there is a problem of variation in quality. To solve the problem, research and development have been promoted on a manufacturing process assisted by a laser scanner that is a highly accurate three-dimensional measuring device. An evaluation method for forming accuracy has been established and has reached a satisfactory level for operation on site. However, the method of automatic selection of thermal forming instructions is still immature. Focusing on the curvature of frame lines on the outer plate that acts as an index when instructions for thermal forming are decided upon, a curvature gap estimation system was developed for outer plate frame lines using a laser scanner. Here, a frame line refers to the standard to be compared with a design shape to evaluate the forming accuracy of the members. The system extracts from measured data a point cloud that makes up each frame line, calculates curvature at a given point on the frame line, and visualizes it with a graph and a color map. This system uses an evaluation method whose curvature calculation has sufficiently appropriate accuracy and that is feasible and useful on site. First, the sufficiently appropriate accuracy of the curvature calculation was confirmed using a measurement form of a cylindrical model that simulated a gap between the distance direction generated by measurement with the laser scanner and the direction of laser irradiation. Next, the feasibility and usefulness on site were confirmed by applying the measurement method to the processing data of the ship shell outer plate shape that was obtained through the curving process in the shipyard, and then by comparing the record of regions thermally formed by the worker with index calculation results made by the system.

Challenge for the Traceable Dimensional Measurement Using CMM in Factory Floor

2017 ◽  
Vol 870 ◽  
pp. 243-248
Author(s):  
Osamu Sato ◽  
Kazuya Matsuzaki ◽  
Hiroyuki Fujimoto ◽  
Sonko Osawa ◽  
Makoto Abe ◽  
...  
Keyword(s):  
Measuring Equipment ◽  
Three Dimensional ◽  
Calibration Procedure ◽  
Measuring Device ◽  
Dimensional Measurement ◽  
Temperature Measuring ◽  
Measurement Results ◽  
Temperature Measuring Instrument ◽  
Three Dimensional Coordinate ◽  
Factory Floor

Dimensional measurement is a key process in the quality assurance of manufacturing. Not only classical one-dimensional measurement devices, several kind of three-dimensional coordinate measuring systems (CMSs) including coordinate measuring machines (CMMs) are used for dimensional measurement tasks in measurement rooms or in factory floors. For the purpose of the quality guarantee, the measurement for the validation on the products should be performed with the traceable manner. In the case of the dimensional measurement, the measurement results of the products should be stated as the corresponding values in the reference temperature, 20 °C. Therefore, at least the traceability of the length indication instruments and temperature-measuring equipment installed into the measuring device to be used should be ensured. Usually, the traceability of the instrument or equipment is ensured through the calibration on it. Now, typical CMMs in factory floor have non-calibrated temperature-measuring equipment because the equipment is hard to be detached off for the calibration, and therefore, the temperature-measuring equipment is usually left uncalibrated. Recently, a new procedure by which both the length indication instruments and temperature-measuring equipment installed into a CMM are able to be calibrated simultaneously is established. In this research, the traceable dimensional measurement using a CMM equipped with uncalibrated temperature-measuring instrument is developed by as an application of the established calibration procedure. Through the experiment, the traceable dimensional measurement using the CMM placed on the factory floor is demonstrated.

scholarly journals Efficacy of a simple intraoperative stem-anteversion measuring device in total hip arthroplasty

2020 ◽  
Author(s):  
Kentaro Iwakiri ◽  
Yoichi Ohta ◽  
Yohei Ohyama ◽  
Yukihide Minoda ◽  
Akio Kobayashi ◽  
...  
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Three Dimensional ◽  
Computer Assisted ◽  
Level Of Evidence ◽  
Measuring Device ◽  
Correction Angle ◽  
Assisted Navigation ◽  
Total Hip ◽  
Flexion Extension

Abstract Background Background: Stem anteversion is important in reducing postoperative complications in total hip arthroplasty (THA). THA utilizing the combined-anteversion theory requires stem anteversion angle (SAA) measurement intraoperatively; however, intraoperative SAA estimation is difficult for surgeons without computer-assisted navigation system. We evaluated the accuracy of the SAA measured intraoperatively using a newly developed device by comparing the three-dimensional measurements using postoperative computed tomography (CT).Materials & Methods In 127 hips in 127 patients who underwent unilateral THA at our hospital, we used our newly developed device that can be easily attached to rasping broach handles for measuring the SAA intraoperatively, which required the addition of the correction angle obtained in the preoperative epicondylar view. Postoperative SAA and its discrepancies from the measured intraoperative SAA with or without adding the correction angle were compared between the groups to evaluate the usefulness of the device.Results The intraoperative SAA measured by the device was 17.93 ± 7.53°. The true SAA measured on postoperative CT was 26.40 ± 9.73°. The discrepancy between the intraoperative SAA and true SAA was 8.94 ± 5.44° (without the correction angle), and 4.93 ± 3.85° (with the correction angle). Accuracy with a discrepancy of <5 degrees was achieved in 77 (60.6%) and <10 degrees was achieved in 113 (89.0%). The accuracy was unaffected by the stem placement angle (varus/valgus, or flexion/extension), or ipsilateral knee osteoarthritis.Conclusion The SAA measuring device, easily attachable to various rasping handles, is useful to measure the intraoperative SAA in a simple, economical, and noninvasive manner during THA.Level of Evidence Therapeutic Level IV.

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