Acoustic Emission Measurement Technologies

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DiSPTM Advanced DSP Workstation
for acoustic emission Features &
Waveforms

Workstation Concept. . . Providing Four Complete Channels of Digital Acoustic Emission on a Single PCI Board . . . and the Industrys Largest Number of AE Channels in One Small Enclosure.

DiSP Advanced DSP Workstation The PCI/DSP-4 board is the heart of the DiSP System. Due to advances in surface mount technology and high density ASIC devices, we have been able to provide this single PCI card with 4 complete high-speed, channels of Digital Signal Processing (DSP) based AE data acquisition, up to 8 parametric input channels (on the first card) and optional waveform module. Through the high performance PCI bus, significant AE data transfer speeds (up to 132 Megabytes/second) can be attained. This assures a wide bandwidth bus for multi-channel AE data acquisition and waveform processing.

Since the 32-bit PCI bus has become the de-facto standard in all PC computers today, PCI/DSP-4 boards can be implemented inside your PC or inside one of PACs rugged, multichannel DiSP workstations.

Features:

  • Advanced parallel DSP acoustic emission technology with high-speed PCI cards

  • Proven knowledge-based software and state-of-the-art LAN networking capabilities

  • Four 16-bit, high-speed A/D converters (no gain changes)

  • High-performance, multiple DSP technology on a single 4-channel PCI card
  • Multiple FPGA's for fast, simultaneous AE parallel
    processing of AE features and waveforms

  • Up to 8 parametrics on the first PCI/DSP-4

  • Progressive real-time AE features in both time and frequency domains

  • Multiple software programmable filters

Make a Customized AE System:  Utilize PCI/DSP-4 Subsystems and your own PCs to build customized AE Systems. PAC provides you with Windows DLLs, LabView drivers, etc. Please contact us for more details.

Typical AE Applications for DiSP Workstations:

  • Pressure Vessel Testing, including Spheres

  • Above Ground Storage Tanks

  • Transformer Testing, including Partial Discharge

  • Tube Trailers and High Pressure Gas Cylinders Stress Corrosion Cracking and Hydrogen Embrittlement

  • Advanced Materials Testing

  • Transportation Testing (RR-Tank Cars, Bridges, Aerial Man-lift Devices)

  • Petrochemical Pipelines

  • Nuclear Components (Valves, Lift Beams, Steam Lines)

  • Composites and Aerospace Components & Structures

  • FRP (GRP) Vessels and Rocket Motor cases

  • Weld Monitoring (Real or Post Time Testing)

  • Reactor and High Energy Piping (HEP) Testing in Power Plants and Refineries, including Hot Reheat Lines

 
DiSP Workstations: Multi-Purpose, Multichannel AE Parallel Processors

DiSP-16BT AE ControllerEach DiSP Workstation houses an entire acoustic emission (AE) system including a standard, powerful, integral PC computer (and peripherals such as CDROM, hard and floppy disks) and up to 56 AE channels, using our PCI/DSP-4 boards. Several different chassis are available, including sizes for 8, 16, 24 and 56 channels.

The DiSP-16BT AE Controller is based on a high-performance PC, designed for both laboratory and light industrial use and houses four (4) 4-Channel AE subsystem PCI cards (PCI/DSP-4) for a total of 16 channels of simultaneous feature/waveform based AE. The DiSP-16 is based on a heavy- duty desktop PC computer chassis with added features for reliable day-to-day operation, including extra cooling and ventilation, and incorporating the latest powerful PC computer motherboard. The PC Main AE Controller gives the user the lowest cost for a high-performance AE system. The system is certified by PAC to run AEwin, PACs latest Windows software, and includes 16 Hit LED on the front panel and an on-board Ethernet 10/100 Mbit interface. An optional, digitally controlled, high fidelity audio monitor is available. The system is 17" (43 cm) W, 17" (43 cm) D and 6" (15.2 cm) H and weighs 26 lbs. (with 16 channels) and comes complete with external Video 17" CRT monitor, keyboard and mouse. The optional "PAC AE System Viewer" software provides the ability for remote control over the company network.

DiSP-24 Portable AE WorkstationSimilarly, the DiSP-24 is a portable, hardened and compact AE system, equipped with a handle for carrying and an integral keyboard built within the hinged front protective cover. Weighing less than 38 lbs. (17.3 kg) with all 24 channels, the DiSP-24 is 21" (533 mm) L x 14" (356 mm) W x 7.6" (193 mm) H. Inside this small enclosure is a powerful PC computer, large hard disk, floppy drive, CD-RW drive, and the standard complement of parallel printer port, serial port, USB and mouse port. Built-in AE features include a digitally controlled high fidelity AE audio monitor, 8 parametrics and AE Hit indicator LEDs. System communications capabilities include built-in Ethernet 10/100 LAN and optional AE system expansion interface for connecting multiple DiSP Systems to one AE test. The optional "PAC AE System Viewer" software provides the ability for remote control over the company network.

DiSP-56 AE WorkstationThe DiSP-56 AE Workstation, houses an entire acoustic emission system including up to 56-Channels (14 PCI/DSP-4 AE Subsystem boards) of simultaneous feature/waveform based AE channels, 56 Hit LEDs on the front panel, fully integrated and digitally controlled, high fidelity, AE audio monitor, powerful, integral PCI-bus based computer and all standard PC computer peripherals (such as floppy, hard disk, CD-RW drive, serial and parallel interface ports). The DiSP-56 is a heavy duty, industrial, desktop (or rack mountable) chassis with high capacity cooling and ventilation for reliable day-to-day operation. The system is 17.5" (445 mm) Wide, 10.5" (267 mm) High and 19.0" (483 mm) Deep and weighs 58 lbs. (26.5 Kg) with 56 channels. The DiSP-56 comes complete with external Video CRT monitor, keyboard and mouse. System communications capabilities include; built-in Ethernet 10/100 LAN, and optional AE system expansion interface for connecting multiple DiSPs to one AE test. The optional "PAC AE System Viewer" software provides the ability for remote control over the company network.

DiSP-56T, "All-in-one" chassisThe DiSP-56T, "All-in-one" chassis, consists of a standard DiSP-56 rack mount chassis integrated inside a rugged transit case that also contains a flat screen LCD display, printer, keyboard, mouse and all wiring pre-connected to the DiSP-56 so that all one has to do to operate the system is to connect the AC line cord and sensors, power-up, and begin testing. Using the DiSP-56T transit case, results in lower shipping costs, excellent system protection during transportation and very fast AE test set-up times.

The DiSP-56T All-in-one transit case is a 7U, rack mountable transit case with internal shock mounts to protect the internal DiSP-56, and removable front and rear panels. 6U of the case height holds the DiSP-56 channel chassis and 1U holds a keyboard/mouse drawer. The front cover is hinged at the top and contains an integral 14" flat screen LCD, CRT monitor, with SVGA resolution. The rear panel contains a rugged bubble jet printer. Overall dimensions of the DiSP-56 Transit case is 32.3" (82 cm) Long, by 21" (53.3 cm) Wide by 15.5" (39.3 cm) High with a total system weight of 123 lbs. (56 kg) complete with DiSP and 56 channels.

 

AE Win Logo
Windows Real Time Software

For True, Real Time Windows Operation and Control of Your PAC Acoustic Emission (AE) System (DiSP, MISTRAS and SPARTAN) Under WINDOWS 98/ME/2000/XP.

AEwin is a 32 bit WINDOWS, Data Acquisition and Replay program capable of running PACs DiSP, SAMOS, PCI-2, MISTRAS or SPARTAN based products. Utilizing full WINDOWS resources including; Setting of any WINDOWS available screen resolutions, Printing, Networking, Multi-Tasking, Multi-Threading, etc, the program runs under WINDOWS 98/2000/ME/XP operating systems.  However, the best performance will be obtained using WINDOWS 2000/XP.  AEwin is fully compatible with PACs standard (DTA) data files, which allows you to replay and analyze all your previously collected AE files.

AEwin is easy to learn, operate and use.  The software has all the acquisition, graphing and analysis capabilities that you have come to expect in your AE system, plus many more new and enhanced features to ease your data analysis and visualization tasks.  Multiple copies of AEwin can be run at once, one for acquisition with full display and analysis capabilities and one or more as Replay for additional analysis purposes.

   

General AE display and analysis capabilities: 

  • Provides a framework for easily adding graphs and graph screens to the main system WINDOW.

  • Has a very flexible line dump capability, which can be called at any time, in any screen, which can be scrolled up or down.

  • Offers various user-selectable tool bars including; Setup icon toolbar, acquisition control, line dump, status toolbar and statistics tool bar.

  • Contains many built in, enhanced features including;  Graph zooming and panning, more flexible graph setup, more graphs, and filtering functions.

  • Printing capabilities include; Print a graph, a screen or multiple screens to a WINDOWS or network printer, to the clipboard or to a JPEG file. 

  • Comes in Location and Non-Location (DAQ) versions.

Graphing capabilities:
  • AEwin Waveform Viewing Exceptional 2-D and 3-D graphing capabilities that allow the setup of multiple graphs on a screen, limited only by the screen resolution.

  • Hit/Event identification that highlights selected data in other graphs.

  • Ability to set up and individually size (on screen) many different types of graphs including; 2-D line graphs, histograms, point plots, waveforms, FFTs, overlays, multiple plots on a single graph and color options

  • Capability to arrange multiple graphs on a screen

  • Toggling between multiple screens by selecting a user-labeled tab

  • Expandable to full screen with zooming and panning for close-up analysis

  • Full cursor readout capability

  • Multiple screens w/ user-labeled selection tabs.

   
AEwin Waveform Viewing

Graphing capabilities overview:

Many graphs per screen can be viewed in real time or replay. This screen shows some of the flexibility of AE-WIN. In this overview, 2D and 3D graphs, waveforms, FFTs, line graphs, histo-grams, multi-plot graphs, etc. are shown.

   

Simultaneous display of AE features and waveforms:

  • Multiple graphs denoting different channels

  • Waveforms and FFT plots intermixed on any screen

  • Multiple plot points on a graph

AEwin Waveform Viewing
   
Simultaneous AE digital signal processing:
  • Shows 12 channels of waveforms with associated FFTS that are only available with DiSP DSP-Parallel Processors.
AEwin Simultaneous AE Digital Signal Processing
   
AEwin Flexible Graphing Flexible graphing capabilities:
  • Shows 3D graph combined with different types and sized supporting graphs

  • 3-D Graph can be rotated, zoomed, and panned freely using the mouse

   
Flexible cursors:AEwin Waveform Viewing
  • Flexible cursor modes

    • Continuous

    • Sample by sample

  • Cursor position readouts on any graph in true axis values

  • Zoom and pan functions to very fine resolutions
   
AEwin Color Scatter point plotsColor (Scatter) point plots:
  • Colored (Scatter) point plots allow you to display any AE feature or parameter (e.g. channel number) as a color value

  • The colors can be changed, the levels can be manually set or automatically scaled

  • individual planes can be turned on or off for easy data visualization

   
AEwin Waveform Viewing Clustering:
  • Clustering of point plot graphs is a standard feature in AEwin. This feature works on hit or event based graphs.

  • A very simple menu allows the user to set up clusters as a function of actual screen units or % of screen.

  • The user can set the minimum cluster size separately for X & Y directions, the cluster threshold, sorting criteria for grading clusters with color selection and level control.

  • You can also select to imbed the prioritized cluster results table as part of the graph or can pop-up the cluster table using the F6 key.

   
AE Hits line dumping:
  • Flexible line dump listing window can be scrolled.

AEwin Waveform Viewing
   

Location determination:

 
The standard version of AEwin has Zonal and Linear Location modes, while the optional Full Location software adds Planar Location for a free surface, a plate, and a cylinder.  Other available options include 3D Location and a Spherical 3D Location.
   

Key location features:AEwin Location Capabilities

  • Multiple (8) location groups standard, (32 optional), each capable of using all the AE channels in the AE system. Mouse oriented sensor setup includes;  Set sensors manually (click and drop), automated sensor setup for triangular setup, and easy sensor editing drag and drop, or table entry based sensor position.
  • Multiple 1, 2, and 3 dimensional location modes.

  • Flexible Clustering, cluster reporting and Cluster statistics available on any point plot graph screen (not just limited to location).

  • User-selectable location structure visualization to ease setup.  Options include; plate, vertical vessel, horizontal vessel, sphere, and free, each with specific setup menus geared for easy setup of that structure, including automated and manual placement of sensors, weld lines, nozzles, etc. 

  • Incorporates attenuation profiling into location software (to view a sensor coverage map and provide source amplitude information).

  • Visualization overlay planes to ease setup and viewing of location setup and results.  Overlay planes include; sensors, grid, attenuation map, welds and nozzles.

  • Advanced Location setup capabilities provides improved event detection classification, hit and event filtering, and accurate source location techniques

   
AEwin Waveform Viewing Accurate Source Location:
  • The "Smart Location Algorithm" (SLA) uses multiple timing features, multiple hits and is geometry aware to use the data which provides the best location result.

  • Up to 4 different timing strategies can be implemented, each with their own timing feature, velocity setting and frequency range.

  • Event filtering menu allows you to eliminate certain types of hits (e.g. reflections, excess hits in an event, etc.).

  • Event detection setup menu lets you set up various checks to make sure each hit is a member of the event.

  • Material data base allows you to reference a material to find its velocity.

  • Plot RLQ button gives direct access to dispersion curves.

   
Automated Location setup features:
  • AEwin Waveform ViewingAEwin location setup provides an easy, intuitive, interface for setting up sensors on a structure. This is done by positioning sensors with the mouse, using cursor readout or entering coordinates in a table, or with automated placement.

  • Graphics can be imported to show the object being monitored, draw additional details (welds or nozzles) and placing sensors. This setup goes through to the actual location graph automatically for location view visualization.

   

User-friendly attenuation profile for source amplitude correction:

  • AEwin can use an attenuation profile of the AE response on the structure. This information is important in determining the source amplitude of an AE event.

  • Attenuation profiles can easily be constructed and displayed in tabular and graphical form. They can be saved and recalled.

  • AEwin automatically determines the amplitude at the source (Source Amplitude) and provides this as a graphable AE feature.

  • User can perform attenuation study on structure by entering AE amplitude at different distances to create an attenuation profile or map.

AEwin Waveform Viewing AEwin Waveform Viewing
   

Event linking graphics:

  • Any AE data point on any Scatter (Point) plot - whether hit or event based can be selected.

    • A cursor is used in the graph to provide a direct link to the associated waveform and line listing

    • A display cursor identifies each hit/event in each point plot graph throughout AEwin

  • Once an event is selected:

    • Multiple hits making up the event are shown (3 as shown on right for a 2D event, 2 waveforms for a linear or 1dimensional event) as well as the event record

    • If an AE hit data point is selected with single waveform. The hit line listing is displayed

AEwin Waveform Viewing
 
AEwin Waveform Viewing Detailed event analysis:
  • Any event can be accessed by Hit/Event linking to show the waveform composition and the event and hit data which forms the event.

  • Just move the data cursor over a point, right click and select Hit/Event Linking to show the waveform and event data.

This page was copied from Home page of Physical Acoustic ltd.
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