PAS 8000

The PAS 8000 system is used for beam forming and collection of the response of the tested object. The array of piezo elements, excited with defined delays, generates a wave of required shape (parallel, perpendicular or aligned to the linear pattern of piezo elements or round for circular array). The technology is based on the interference phenomenon, where generated waves superpose and create the main front wave. From the tested object's response the conclusions about the state of the object may be drawn – whether it has any external or internal damage, or – it is just sound. A the end of the experiment the measured data are sent via the USB interface to the PC and, after pre-processing, can be displayed and analyzed in the MatLab® environment.

The PAS8000 device may be also equipped from the hardware and software point of view to excite the structure with the use of external source. These excitations may be loaded from the previous measurements or especially prepared files with data (in *.mat or *.dat format). Such a possibility enables to run more complex non-destructive testing with the use of the time reversal technology.

The PAS module contains several (2-8 with the step of 2) power stages that can generate separately the excitation signals with preset parameters. This is the response for the need of phased array and beam forming experiments. Measuring modules (PAQ) may be equipped with 8 or 16 channels for the acquisition of the structure's response. Modular construction of the system enables to choose the package configuration according to user requirements.

Applications:

  • detection of external and internal defects - cracks, fractures, voids, delamination, corrosion
  • welded joints non-destructive testing

Technical parameters

number of excitation channels 1(0)
number of measurement channels 7(8)/15(16)
Lamb packet frequency 10-500 kHz
Lamb packet periods 1-16
Lamb packet modulation window triangle/rectangle/Hanning
maximum excitation voltage 200 Vpp
converter A/C: 2,5 MHz, 24 bit
additional settings excitation signal gain, measurement signal gain, gain relative delay (in multichannel system)
number of modules per system PAQ: 1-8, PAS: 1-8
power supply 115/230 VAC, 50/60 Hz
communication interface USB
work environment MatLab®