Flame penetration imaging can be used to take movies through flames, arcs and explosions. When an arc or laser welding process is imaged with a normal imaging system, the high brightness of the plasma saturates the camera and no detail can be seen. VisiWeld systems eliminate the glare to give a clear image of the weld process.
Applications
* Circuit breaker contact erosion
* Laser welding visualization
* Arc welding imaging
* Aero-engine blade breaks
* Metal arc spray viewing
* Explosions
How it works
The VisiBrite systems use lasers to illuminate the subject with high brightness, narrow bandwidth light. The imaging system's specially modified, digital high speed camera then only accepts the laser light and rejects the broad-band light emitted by the subject under study. This allows the camera to 'see' through plasmas, arcs, flames and explosions to record details of processes which would otherwise be totally obscured by the background light.
One important area of study is welding. The glare from an arc weld or the fireball of a laser welding process is impenetrable for most imaging systems. Derivatives of the VisiBrite range have been developed specifically for use in weld imaging. Specially selected and modified cameras and laser illuminators are combined to form extremely powerful VisiWeld, weld viewing systems, with frame rates from 60 fps to 1,000 fps. These powerful visualization tools enable flows within the weld pool to be studied.
Product selection matrix
For all systems listed below, laser exposure time is 30 ns or less, fast enough to freeze bullets in flight. Other configurations are available - for more information Contact Us, or see the detailed applications brief.
System Max. Speed (frames/sec) Comments
VisiBrite SP 30 Standard video rate. Compact, low cost, suitable for very large areas (many meters). Use for slow or continuous processes
VisiBrite Pro+ 10 000 Use for events which happen in 10ms or longer
VisiBrite Max 50 000 Very Fast. Use for explosions, munitions and balllistics work
Downloads Size
VisiBrite Application Note 136.17 KB
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