Laser Visualization of Bullet Paths

Summary. The arms — to analyze the evolution of the development of modern surgical instruments in gunshot wounds chest. Materials and methods. 80 cases of using a modern magnetic surgical instrument for penetrating gunshot wounds of the chest were analyzed. Intraoperatively used: a magnetic multifunctional tool for the diagnosis and removal of metallic ferromagnetic foreign bodies, a flexible device for removing ferromagnetic foreign bodies, a magnetic tool for endovideoscopic diagnosis and removal of metallic ferromagnetic foreign bodies from the abdominal and pleural cavities, a magnetic nozzle for video endoscopic surgical interventions. When removing metal foreign bodies, the following methods were used: a method for preliminary determination of the material and properties of a foreign body, a method for video endoscopic laser visualization of the internal organs of the abdominal and pleural cavities. Results. Foreign bodies of the pleural cavity were diagnosed in 80 (100 %) wounded according to СT. Ferromagnetic metal foreign bodies of a gunshot origin of the pleural cavity were removed both during thoracotomy or minithoracotomy, and during thoracoscopic surgical interventions using the method of video endoscopic laser visualization of the internal organs of the abdominal and pleural cavities. The most convenient tool was the endoscopic magnetic tool for removing foreign bodies from the pleural or abdominal cavities. A magnetic nozzle for video endoscopic surgical interventions allows navigation both in the pleural cavity and along the wound channel. Conclusions. 1. The development of a surgical magnetic instrument was phased and began with the improvement of a surgical magnetic instrument to remove ferromagnetic foreign bodies of soft tissues. 2. The improvement of the tool took place as the restrictions on the use of the existing tool were established, which was a prerequisite for the development of a new tool. 3. It is advisable to create a special set of surgical magnetic instruments for video endoscopic surgery.

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Nonaxisymmetric Convection in Stationary Gas Tungsten Arc Weld Pools

Journal of Heat Transfer ◽

10.1115/1.2824082 ◽

1997 ◽

Vol 119 (1) ◽

pp. 164-172 ◽

Cited By ~ 17

Author(s):

Y. Joshi ◽

P. Dutta ◽

P. E. Schupp ◽

D. Espinosa

Keyword(s):

Computational Study ◽

Numerical Models ◽

Three Dimensional ◽

Pulsed Laser ◽

Surface Flow ◽

Rotational Flow ◽

Visualization System ◽

Gas Tungsten Arc ◽

Laser Visualization ◽

Weld Pools

Observations of surface flow patterns of steel and aluminum GTAW pools have been made using a pulsed laser visualization system. The weld pool convection is found to be three-dimensional, with the azimuthal circulation depending on the location of the clamp with respect to the torch. Oscillation of steel pools and undulating motion in aluminum weld pools are also observed even with steady process parameters. Current axisymmetric numerical models are unable to explain such phenomena. A three-dimensional computational study is carried out in this study to explain the rotational flow in aluminum weld pools.

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Laser Visualization of Ultrasonic Phase Gratings

The Journal of the Acoustical Society of America ◽

10.1121/1.1913106 ◽

1972 ◽

Vol 52 (1B) ◽

pp. 427-429 ◽

Cited By ~ 1

Author(s):

Flavio Porreca

Keyword(s):

Laser Visualization

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The quick-acting laser visualization of processes arising by interaction of shock and detonation waves and small particles

10.1063/1.39382 ◽

1990 ◽

Cited By ~ 1

Author(s):

V. M. Boiko ◽

A. N. Papyrin

Keyword(s):

Detonation Waves ◽

Small Particles ◽

Laser Visualization ◽

Shock And Detonation Waves

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Precision Processing by Laser. Visualization of Laser Materials Processing Process Based on Molecular Dynamics.

Journal of the Japan Society for Precision Engineering ◽

10.2493/jjspe.65.1543 ◽

1999 ◽

Vol 65 (11) ◽

pp. 1543-1546 ◽

Cited By ~ 1

Author(s):

Etsuji OHMURA

Keyword(s):

Molecular Dynamics ◽

Materials Processing ◽

Laser Materials ◽

Laser Materials Processing ◽

Laser Visualization

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Effect of Chaotic Nature on IPHICLUS and NEARCTIC Flapping MAV Wings in Lift Generation using Welch Power Spectral

International Journal of Vehicle Structures and Systems ◽

10.4273/ijvss.13.3.18 ◽

2021 ◽

Vol 13 (3) ◽

Author(s):

R. Asad Ahmed ◽

S. Syam Narayanan ◽

Anandh C.M. Joseph

Keyword(s):

Unsteady Aerodynamics ◽

Aviation Industry ◽

Experimental Investigations ◽

Tip Vortices ◽

Flexible Wing ◽

Power Spectral ◽

Laser Visualization ◽

Chaotic Nature ◽

Spectral Density Method ◽

Wing Tip

The application of bio-mimetic in Micro Aerial Vehicles (MAV) is a developing field and has enormous applications in the aviation industry. In this work, experimental investigation of the insect like MAV having flapping wing is discussed. The iphiclus-egensis-aile flexible wing and the nearctic-ceratopogonidae flexible wing were chosen for this study. Values of the coefficient of lift for the unsteady aerodynamics were converted to normalized frequency domain using Welch power spectral density method at various flapping frequencies and Reynolds number. The wing tip vortices were captured using laser visualization technique and further the images were processed using MATLAB. Experimental investigations were carried out in wind tunnel for various velocities and Angle of Attack (AoA) and the results were obtained using digital six component balancing system. Detailed study of both the results shows that the nearctic-ceratopogonidae flexible wing has better lifting properties than the iphiclus-egensis-aile flexible wing at low flapping frequencies and low AoA. For higher flapping frequencies and high AoA, the latter shows better lifting properties than the former.

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CONCEPT OF FORMATION AND PROCEDURE OF ERGONOMIC ASSESS-MENT OF LASER PROJECTION SYSTEM IN SIMULATOR

Bulletin of Bryansk state technical university ◽

10.12737/24951 ◽

2017 ◽

Vol 2017 (1) ◽

pp. 271-275

Author(s):

Владимир Халтобин ◽

Vladimir Khaltobin ◽

Валерий Василец ◽

Valeriy Vasilets ◽

Андрей Пономаренко ◽

...

Keyword(s):

Laser System ◽

Projection System ◽

Visualization System ◽

Laser Visualization

Basic merits and a conceptual image of the laser system for the visualization of off-cockpit situation in an aircraft simulator are shown. The operation of this system is considered. The procedure and basic results of an ergonomic assessment of a laser visualization system for the simulator MiG-29K are presented.

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An Experimental Study for Clarifying the Mechanism of a Microjet in an Electro-Conjugate Fluid by the 2D PIV Analysis

Volume 7: Fluid Flow, Heat Transfer and Thermal Systems, Parts A and B ◽

10.1115/imece2010-38512 ◽

2010 ◽

Cited By ~ 1

Author(s):

Akira Satoh ◽

Kiyohiro Katoh

Keyword(s):

Experimental Study ◽

Applied Voltage ◽

Maximum Velocity ◽

Dielectric Fluid ◽

Analysis Tool ◽

Visualization Technique ◽

Average Maximum ◽

Laser Visualization ◽

Surface Liquid ◽

Piv Analysis

If a high voltage is applied to a pair of electrodes immersed in a certain dielectric fluid, a strong microjet occurs between the electrodes. This is called the ECF (electro-conjugate fluid) effect. However, the mechanism of the occurrence of such a microjet has not been clarified yet. As a first step, we here attempt to clarify this mechanism by means of a laser visualization technique with a PIV analysis tool. From this analysis tool, we have obtained flow field solutions and also evaluated the maximum velocity of a microjet as functions of the magnitude of an applied voltage, the separation of a pair of electrodes, etc. Some important results obtained here are summarized as follows. The average maximum velocity decreases linearly with decreasing values of the gap between the electrodes and also with increasing values of the magnitude of an applied voltage in a surface liquid area. Moreover, the average maximum velocity has a tendency to decrease gradually with increasing values of the depth of the electrodes immersed in an electro-conjugate fluid.

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