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In 1992 – 1993 “INTERUNIS” produced the first multichannel AE systems
A-Line 8S and A-Line 16S based on IBM PC, which marked the beginning
of the whole family of multichannel A-Line series AE devices.
Simultaneously with the first AE systems production the software for
them also appeared. The first program version included the base set of
functions required for acquisition and further processing of AE data.
The full spectrum of AE equipment the company produced in different
time is given in Figure below.
For today “INTERUNIS” produced more that 450 AE systems of A-Line
series (and four generations of software). The devices high quality and
reliability are confirmed by certificates of the State Standard Agency
of the Russian Federation, RU.C.28.036A No. 15512, and No. 15492.
The latest generation of A-Line Series devices is presented by AE
systems of A-Line 32D family. The software of ?-Line 32D AE systems is
realized in Windows 9x, XP environment and has the ample opportunities
together with ease of use.
A-Line 32D –
DIGITAL ACOUSTIC-EMISSION SYSTEMS OF NEW GENERATION
PURPOSE
- Non-destructive testing by AE method not taking from service:
transfer, field and process pipelines, pressure vessels, tanks,
boilers, boring towers, cranes, bridges and other facilities.
- Detection of cracks birth and growth.
- Finding of places of corrosion, leakage, and high-level stress
zones.
- Determination of coordinates and evaluation of defect parameters.
- Tracking of different processes and evaluation of technical state of
critical large-scale structures, lengthy or highly dangerous objects
on a real-time basis.
A-Line
32D (PCI, PCI-N, PCI-8) – AE systems of traditional
architecture are multichannel boards for AE data recording and
processing (on the industrial computer base). AE data researched are
transferred from the test object via a preamplifier through a coaxial
cable to the central unit of data acquisition and processing in an
analogue form.
The AE systems of this series developed for the most part
evolutionary, and each new version appeared in the family was
determined by change to new technologies, by characteristics
improvement and addition of new functional capabilities.
The multichannel AE systems built according such ideology are
characterized by excellent features, high-rate data processing and
equally well suit both the filed works and the researches.
To show the distinctive features of traditional AE systems versions,
Table gives their main characteristics.
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| | Channels number on the board |
4 |
4 |
8 | | Maximum number of channels in the system block |
32 |
32 |
64 | | Response speed |
> 10 000 AE events |
> 20 000 AE events |
> 20 000 AE events | | ADC |
16 bit / 5 MHz |
16 bit / 5 MHz |
16 bit / 2 MHz | | Maximum amplitude |
96 dB |
100 dB |
100 dB | | Dynamic range |
78 dB |
84 dB |
84 dB | | Bandpass |
30 – 500 kHz |
1 – 500 kHz |
1 – 500 kHz | | Adjusted gain |
- |
+ |
- | | Input filter |
Analogue |
Analogue, switchable |
Digital, programmable | | Oscillographic channel |
1 per system |
1 per each channel |
1 per each channel |
Now the main AE systems of one type with traditional architecture –
A-Line 32D (PCI–8) are series-produced. However, the previous member of
this class - A-Line 32D (PCI-N) AE system with an extended frequency
rate (up to 5 MHz) is still popular as an inexpensive variant of the
board for processing AE data for scientific investigations.
Along with development of the AE systems with traditional
architecture, in late 2000 the AE system with a digital data transfer,
A-Line 32D (DDM), was designed; this system differs cardinally from all
previous members of the A-Line 32D family.
The key feature of this AE system became carrying of the whole
recording and computing part from the central computer to the advice to
be installed directly at the test object, it received the name AE
module.
A-Line
32D (DDM) - systems are multichannel modular AE
data acquisition and processing systems of the distributed type with a
serial high-speed digital data transfer channel.
The AE systems of this series consist of the central computer and
several measuring lines, formed by series-connected AE data acquisition
and processing modules (AE modules) according to the number of
channels in the system. Amplification of AE signals, filtration,
digitization by means of ADC, recording, further digital processing and
determination of AE parameters are carried out in the AE module to be
located near the AE transducer directly at the test object. When achieving the high technical characteristics of our
devices, we try at the same time to make them the most convenient and
easy in service.
DISTINCTIVE FEATURES OF A-Line 32D SYSTEMS
- Wide model range:
series-produced modifications – PCI-8, DDM;
different versions – Portable, SAX, Industrial, Ethernet
Box.
- Design:
in PCI-8 systems – traditional architecture with a data
processing centralized diagram;
in DDM systems – modular distributed type with a
serial high-speed digital data transfer channel.
- Possibility to conduct stationary continuous testing (monitoring).
- High-speed information acquisition, processing and transfer.
- Data analysis on a real time basis.
- Range of operating frequencies of 30 ÷ 500 kHz, on order from 1
kHz.
- Testing of lengthy facilities with a total length up to 5 km by the
use of one portable system per one measurement.
- Correlation analysis of AE-signals and their spectrums that allows
making conclusions about the probable origin of signals transmitted to
different sensors.
- Convenient friendly interface within Windows environment in Russian,
giving ample opportunities for measurement, processing and displaying
the measurement results on a real time basis and under postprocessing.
If you select products of our company, you will acquire the
highest class reliable equipment, free of charge training and
consultations on our devices operation, and regular free of charge
software updating.
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