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

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

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 Bite force and its relationship to jaw shape in domestic dogs

2020 ◽  
Vol 223 (16) ◽  
pp. jeb224352 ◽  
Author(s):  
Colline Brassard ◽  
Marilaine Merlin ◽  
Claude Guintard ◽  
Elodie Monchâtre-Leroy ◽  
Jacques Barrat ◽  
...  
Keyword(s):  
Morphological Variability ◽  
Three Dimensional ◽  
Biomechanical Model ◽  
Bite Force ◽  
Domestic Dogs ◽  
Temporal Muscle ◽  
Molar Teeth ◽  
Mandible Shape ◽  
Force Variation

ABSTRACTPrevious studies based on two-dimensional methods have suggested that the great morphological variability of cranial shape in domestic dogs has impacted bite performance. Here, we used a three-dimensional biomechanical model based on dissection data to estimate the bite force of 47 dogs of various breeds at several bite points and gape angles. In vivo bite force for three Belgian shepherd dogs was used to validate our model. We then used three-dimensional geometric morphometrics to investigate the drivers of bite force variation and to describe the relationships between the overall shape of the jaws and bite force. The model output shows that bite force is rather variable in dogs and that dogs bite harder on the molar teeth and at lower gape angles. Half of the bite force is determined by the temporal muscle. Bite force also increased with size, and brachycephalic dogs showed higher bite forces for their size than mesocephalic dogs. We obtained significant covariation between the shape of the upper or lower jaw and absolute or residual bite force. Our results demonstrate that domestication has not resulted in a disruption of the functional links in the jaw system in dogs and that mandible shape is a good predictor of bite force.

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.

Sign in / Sign up

Export Citation Format

Share Document