Commissioning of a metal vapor laser for the illumination of high speed motion pictures (projectile analysis)

1993 ◽  
Vol 29 (1) ◽  
pp. 1219-1223 ◽  
Author(s):  
D.J. Wehrlen ◽  
S. Sarin
Keyword(s):  
High Speed ◽  
Motion Pictures ◽  
Metal Vapor ◽  
Vapor Laser

Circuit Breaker Mechanical Characteristic Parameters Measurement Based on Machine Vision

2014 ◽  
Vol 687-691 ◽  
pp. 934-937
Author(s):  
Shu Tao Zhao ◽  
Yu Tao Xu ◽  
Zhi Wan Cheng ◽  
Jian Feng Ren ◽  
Dan Jiang
Keyword(s):  
Mechanical Characteristic ◽  
Template Matching ◽  
High Speed ◽  
Circuit Breaker ◽  
Motion Pictures ◽  
Time Interval ◽  
Connecting Rod ◽  
Characteristic Parameters ◽  
Coordinate Changes ◽  
Parameters Measurement

Aim at the disadvantages of traditional circuit breaker mechanical characteristic parameters test. Get the motion pictures of insulation connecting rod through high-speed camera, using the finite difference method to quickly screen out the motion pictures, and selecting punctuation area as a template for learning, using non-uniform sampling have a template matching, obtain the center coordinates of matching results, time interval is known every frame. Through coordinate changes over time we can obtain mechanical parameters of the circuit breaker accurately, fast, conveniently. Lab VIEW programs achieve the above process automatically.

Multi-wavelength metal vapor laser systems for solving applied problems of atmospheric spectroscopy

2015 ◽  
Author(s):  
A. N. Soldatov ◽  
S. Y. Mirza ◽  
Yu. P. Polunin ◽  
A. S. Shumeiko ◽  
I. K. Kostadinov
Keyword(s):  
Metal Vapor ◽  
Vapor Laser ◽  
Atmospheric Spectroscopy ◽  
Multi Wavelength ◽  
Laser Systems

Analysis of Image Characteristics of Plume and Spatter of High Power Disk Laser Welding Based on K-L Transform

2012 ◽  
Vol 532-533 ◽  
pp. 330-334
Author(s):  
Qian Wen ◽  
Xiang Dong Gao
Keyword(s):  
Laser Welding ◽  
High Power ◽  
High Speed ◽  
Metal Vapor ◽  
Mean Value ◽  
Gray Level ◽  
Characteristic Parameters ◽  
Transform Method ◽  
Disk Laser ◽  
Vapor Plume

Metal vapor plume and spatters are the important phenomena in the process of high power disk laser welding, and there exists a close relationship with the welding stability. The images of metal vapor plume and spatters which captured by a high speed camera during high power disk laser welding were analyzed in this experiment. Image processing techniques such as median filtering, Wiener filtering, gray level threshold and lightness transform were used to process the images so that the image characteristic parameters such as the area and number of spatters in an image, the average gray, mean value, variance and entropy of a spatter gray level image and the coordinate ratio of the centriod of plume and the welding point can be extracted. To reflect the actual welding results obviously by those characteristic parameters, K-L transform method was used to get a new set of characteristic parameters. Experimental results showed that this new set of characteristic parameters could reflect the actual welding effectively.

scholarly journals High Prf Metal Vapor Laser Active Media For Visual And Optical Monitoring

2016 ◽  
Vol 671 ◽  
pp. 012060 ◽  
Author(s):  
S N Torgaev ◽  
M V Trigub ◽  
G S Evtushenko ◽  
T G Evtushenko
Keyword(s):  
Metal Vapor ◽  
Optical Monitoring ◽  
Vapor Laser ◽  
Active Media

scholarly journals Copper vapor laser ( metal vapor ).

1993 ◽  
Vol 21 (1) ◽  
pp. 30-32
Author(s):  
TAKANORI FUJITA
Keyword(s):  
Metal Vapor ◽  
Copper Vapor Laser ◽  
Vapor Laser ◽  
Copper Vapor

Laser Monitors for High Speed Imaging of Plasma, Beam and Discharge Processes

2016 ◽  
Vol 712 ◽  
pp. 303-307 ◽  
Author(s):  
Maxim V. Trigub ◽  
Stanislav N. Torgaev ◽  
Gennadiy S. Evtushenko ◽  
Vitaliy V. Drobchik
Keyword(s):  
High Speed ◽  
Metal Vapor ◽  
Optical Systems ◽  
Imaging Method ◽  
High Speed Imaging ◽  
Destructive Testing ◽  
Copper Bromide ◽  
Imaging Results ◽  
High Pulse ◽  
Non Destructive

The imaging results of different processes blocked from the observation by the intense background light are presented in this paper. Active optical systems based on high-frequency brightness amplifier are used to decrease the negative factor of the glare. The experimental and modeling results on obtaining high pulse repetition frequencies (PRF) (more than 100 kHz) of copper bromide vapor brightness amplifiers operating in a low input energy mode are shown. The use of metal vapor brightness amplifiers for visual non-destructive testing of fast processes obscured by the glare is also discussed. It has been shown that the imaging method proposed in this paper proves to be the most reliable to obtain the information about objects or processes in a real time mode using high PRF CuBr active media.

Infiltration into columns of swelling soil as studied by high speed photography

Soil Research ◽  
1970 ◽  
Vol 8 (2) ◽  
pp. 195 ◽  
Author(s):  
N Collis-George ◽  
R Lal
Keyword(s):  
Surface Layer ◽  
High Speed ◽  
Motion Pictures ◽  
Original Structure ◽  
High Speed Photography ◽  
Surface Layers ◽  
Depth Zone ◽  
Swelling Soil

Columns of aggregates of a soil, which slakes into microaggregates of about 30 � diameter as well as swelling on quick wetting, were examined by high speed photography during infiltration. Because of the collapse of the original structure of surface layers, the supply of water to deeper layers is restricted. Examination of motion pictures and magnified stills for the depth zone just below the collapsed surface layer provides a description of the phenomena occurring during the advance of the front. These phenomena are discussed in terms of limitations of the procedure used, the mechanism of wetting, the displacement of particles, infiltration behaviour, and the nature of swelling and slaking in these systems.

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