Basic knowledge of 3D optical measurement methods used for intraoral scanners

In industrial technological processes associated with the heating of the processed material by microwave radiation, it is necessary to measure the temperatures of objects. Methods for measuring temperatures in the fields of technology using microwave heating systems are considered. The main possibilities, disadvantages and limitations of the used contact and non-contact (optical) measurement methods are determined. The requirements for temperature measurement systems under conditions of exposure to strong electromagnetic fields are listed. The possibilities of the spectral pyrometry method are especially noted.

Download Full-text

Optical measurement methods of Dragon-I accelerator

10.1117/12.725746 ◽

2007 ◽

Author(s):

Guojun Yang ◽

Zhuo Zhang ◽

Sifu Chen

Keyword(s):

Optical Measurement ◽

Measurement Methods

Download Full-text

Perfecting the Hardening Process with 3D Technology

10.31399/asm.cp.ht2021exabp0049 ◽

2021 ◽

Author(s):

Dirk Schlesselmann ◽

Andreas Endmann

Keyword(s):

Optical Measurement ◽

Induction Hardening ◽

Fine Tuning ◽

Process Technology ◽

3D Optical Measurement ◽

Induction Process ◽

New Process ◽

Drastic Increase ◽

Complex Development ◽

Connection System

Abstract Perfecting the induction process relies on fine-tuning every small detail. For the tool, this means the complex development process for the inductors using design software, high-precision production, and the correct positioning of the tool in the machine’s connection system. Applying different new and highly advanced 3D technologies such as FEM & CFD analysis and 3D printing of inductors will lead to a drastic increase of efficiency and the highest reproducibility for the entire process. When this happens, computer-aided accuracies of the inductors are compared with real manufactured inductors using 3D optical measurement methods and will reveal the advantages of this new process technology. The precision and process repeatability of this technology is showcased by various experimental test series’ that take the daily operational challenges for induction hardening as a benchmark.

Download Full-text

Miniaturized Optical Measurement Methods for Surface Nanometrology

CIRP Annals ◽

10.1016/s0007-8506(07)60486-7 ◽

2006 ◽

Vol 55 (1) ◽

pp. 577-580 ◽

Cited By ~ 9

Author(s):

X. Jiang ◽

D. Whitehouse

Keyword(s):

Optical Measurement ◽

Measurement Methods

Download Full-text

New Optical Measurement Methods In Western Europe

10.1117/12.936910 ◽

1987 ◽

Author(s):

William F. Fagan

Keyword(s):

Western Europe ◽

Optical Measurement ◽

Measurement Methods

Download Full-text

Feasibility of Contactless 3D Optical Measurement for the Analysis of Bone and Soft Tissue Lesions: New Technologies and Perspectives in Forensic Sciences

Journal of Forensic Sciences ◽

10.1111/j.1556-4029.2009.01041.x ◽

2009 ◽

Vol 54 (3) ◽

pp. 540-545 ◽

Cited By ~ 30

Author(s):

Giovanna Sansoni ◽

Cristina Cattaneo ◽

Marco Trebeschi ◽

Daniele Gibelli ◽

Davide Porta ◽

...

Keyword(s):

Soft Tissue ◽

New Technologies ◽

Optical Measurement ◽

Forensic Sciences ◽

Soft Tissue Lesions ◽

3D Optical Measurement

Download Full-text

An Optical-Triangulation-Based Method for Measurement of Blade Sections

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.713-715.395 ◽

2015 ◽

Vol 713-715 ◽

pp. 395-401

Author(s):

Yong Zhu ◽

Jing Liang Liu ◽

Cheng Wei Li ◽

Zheng Ya Kang

Keyword(s):

High Efficiency ◽

Optical Measurement ◽

Measurement Methods ◽

Free Form ◽

Probe Radius ◽

Optical Triangulation ◽

Measurement Results ◽

Probe Radius Compensation ◽

Free Form Surface ◽

Radius Compensation

Blades are an important part of aviation engine, its manufacturing compliance seriously affect the performance of the engine. Blades tend to be free-form surface modeling, which makes it extremely difficult to measurement. Since no probe radius compensation, high efficiency, non-contact optical measurement methods get more and more attention, but the inspection uncertainty of optical measurement is usually between 30um to 50um .To reduces the optical non-contact measurement uncertainty, this paper presents an Optical-triangulation-based method for measurement of blade sections. There is a data optimization process in the method, and this feature makes the proposed method can obtain better measurement results. At last, some experiments demonstrate the effectiveness of this method.

Download Full-text