Automation of non-destructive materials testing
A number of methods are used to detect defective material quickly and reliably, ultrasound or x-ray, for example. On the one hand the aims are preventing defective products from being put on the market, and on the other hand guaranteeing the functionality of the products in use.
If a defect is detected, it is mandatory to identify the position of the defect on the examined object. You can ascertain this by measuring the velocity and length using a laser surface velocimeter (LSV). This in turn enables the automation of non-destructive materials testing, saving you time and money.
LSVs from Polytec are ideally suited because they can conduct measurements on almost any surface and they are not susceptible to contaminated surfaces. The non-contact measurement technique makes it possible to eliminate any negative influences on accuracy, such as slippage and wear, simultaneously. The product being subjected to the measurement also remains intact.
Non-destructive testing of steel tubes
See the process-integrated LSV laser sensor in the illustration of a test system. The sensor provides a millimeter clock to determine the length of test pieces and to log the flaw location, which is then color-marked. LSV sensors can also register even the slightest speed variations in the test pieces.
Optical length and speed measurement in steel, aluminum and metals production
Related products
ProSpeed LSV-2100 Laser Surface Velocimeter
The ProSpeed® LSV-2100 optical sensor determines the direction of motion and standstill conditions with laser precision. It measures reliably even under harsh production conditions with large working distances up to 3 m. Due to the non-contact measurement principle, these laser sensors eliminate common problems of traditional contact-wheel measurement methods such as damage to delicate surfaces, slippage and thermal expansion and work on almost any surface.
ProSpeed LSV-1100 Laser Surface Velocimeter
The ProSpeed® LSV-1100 optical sensor measures in forward direction with laser precision. It measures reliably even under harsh production conditions with working distances up to 1.5 m. Due to the non-contact measurement principle, these laser sensors eliminate common problems of traditional contact-wheel measurement methods such as damage to delicate surfaces, slippage and thermal expansion and work on almost any surface.
Further applications
- Elongation
![Elongation process in steel rolling mill using optical sensors]( "Elongation process in steel rolling mill using optical sensors")
Elongation process in steel rolling mill using optical sensors - Velocity measurement
![Optical speed measurement in an aluminum rolling mill for roller synchronization]( "Optical speed measurement in an aluminum rolling mill for roller synchronization")
Optical speed measurement in an aluminum rolling mill for roller synchronization - Length measurement
![Length measurement with a LSV laser sensor in a continuous caster line]( "Length measurement with a LSV laser sensor in a continuous caster line")
Length measurement with a LSV laser sensor in a continuous caster line - Velocity difference
![Differential speed measurement in rolling mills using non-contact laser sensors]( "Differential speed measurement in rolling mills using non-contact laser sensors")
Differential speed measurement in rolling mills using non-contact laser sensors - Mass flow control
![In-process measurement of mass-flow with ProSpeed LSV-2100 laser sensors]( "In-process measurement of mass-flow with ProSpeed LSV-2100 laser sensors")
In-process measurement of mass-flow with ProSpeed LSV-2100 laser sensors - Cutting length control
![Inline cut-to-length control, LSV optical sensors controlling the torch cutter of cast steel beams]( "Inline cut-to-length control, LSV optical sensors controlling the torch cutter of cast steel beams")
Inline cut-to-length control, LSV optical sensors controlling the torch cutter of cast steel beams - Continuous casting
![Reliable process control for continuous casting: optical gauges for speed and length measurement]( "Reliable process control for continuous casting: optical gauges for speed and length measurement")
Reliable process control for continuous casting: optical gauges for speed and length measurement
