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Automatic  Laser Inspection, Detection and Reporting System for Pipes and Tubes
 

Automatic Laser Inspection, Detection and Reporting System for Pipes and Tubes

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Automatic Feature Detection and Data Comparison

Automatic Feature Detection and Data Comparison
of Laser-inspected Smooth-Bore Gun Tubes and Pipes

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    Automatic  Laser Inspection, Detection and Reporting System for Pipes and Tubes Automatic Laser Inspection, Detection and Reporting System for Pipes and Tubes Presentation Transcript

    • LaserViewer™ Analysis Software with Automated Reporting For BEMIS™ Laser-based Bore Erosion Measurement and Inspection Systems: 21 Aug 2013 1 Automatic Feature Detection and Data Comparison of Smooth-Bore Gun Tubes and Pipes
    • Background • LTC clients seek increased autonomy from BEMIS™ Laser- based Bore Erosion Measurement Inspection Systems • Initial application designed for use with smooth-bore gun tubes and pipes • LTC LaserViewer™ Analysis program runs on commercial PCs • Analyzes LTC proprietary Scan Data (.sdt) format • Automates reporting of individual pits and total volumetric material loss of a laser-mapped sample based on operator selectable criteria 2
    • BEMIS™ • Scans the interior surface of pipes and tubes • Saves the data for further analysis 3
    • Machined Defects used as Verification Samples 4 Scan Data as shown in LaserViewer™ Analysis AFD 120mm Diameter Samples
    • Pit Depth Analysis BEMIS™ Measures a machined pit 8mm deep 5
    • BEMIS™ Automatic Feature Detection Software is able to identify and calculate the real size of a feature area. The correct borderline is detectable according to the difference between the “good” surrounding surface and the deeper “defective” surface. LTC Pit Detection Example Flagged as Feature #50 7 Pit Depth Analysis Area and Volume Identification
    • LTC Pit Detection Examples Flagged as Numbered Features from Scan Data file (.sdt) 8 Pit Depth Analysis Area and Volume Identification
    • Size and Volume Calculation LTC AFD Report 9 Displayed in the AFD Workspace Exportable to MS Excel
    • Size and Volume Calculation Sample 1 LTC AFD Report (MS Excel) Segment Volume Tab 10 Defect Peak Average Area X Start Y Start X End Y End X Length Y Length Start Sector End Sector Volume Segment Range Clock Position Volume D1 7.55 5.00 353.0 113.8 6.2 132.4 29.5 18.5 23.3 8 9 1766.26 1 0-30 1200-0100 0.00 D2 5.70 3.76 305.4 84.6 6.5 101.2 28.7 16.6 22.3 6 7 1148.70 2 15-45 0030-0130 152.20 D3 3.82 2.58 228.0 55.4 8.0 70.0 27.5 14.5 19.5 4 5 589.27 3 30-60 0100-0200 137.42 D4 1.95 1.53 99.7 28.6 11.5 37.4 25.0 8.8 13.5 2 2 152.20 4 45-75 0130-0230 589.27 D5 5 60-90 0200-0300 460.89 D6 6 75-105 0230-0330 1148.70 D7 7 90-120 0300-0400 859.62 D8 8 105-135 0330-0430 1766.26 D9 9 120-150 0400-0500 1302.97 D10 10 135-165 0430-0530 0.00 D11 11 150-180 0500-0600 0.00 D12 12 165-195 0530-0630 0.00 D13 13 180-210 0600-0700 0.00 D14 14 195-225 0630-0730 0.00 D15 15 210-240 0700-0800 0.00 D16 16 225-255 0730-0830 0.00 D17 17 240-270 0800-0900 0.00 D18 18 255-285 0830-0930 0.00 D19 19 270-300 0900-1000 0.00 D20 20 285-315 0930-1030 0.00 D21 21 300-330 1000-1100 0.00 D22 22 315-345 1030-1130 0.00 D23 23 330-360 1100-1200 0.00 D24 24 345-15 1130-0030 0.00 Segment Volume TotalsDefects List
    • 11 Size and Volume Calculation LTC AFD Report (MS Excel) Plot Tab Plot Tab
    • LTC Pit Detection Examples Flagged as Numbered Features LTC LaserVideo™ Features do not flag in LVI 12 Size and Volume Calculation Automatic Feature Identification
    • The Automatic Feature Detection software exports position, length, width, depth and volume of the automatic detected area according to operator- selectable criteria. Report in LaserViewer™ Analysis AFD MS Excel Exported Data 13 Data Export Functionality LTC AFD Report and MS Excel Plot Tab
    • Operators can select a grid overlay display with fixed sizes between distances. The grid is automatically adapting to every selected display scale factor of the scanning data. LTC Grid Overlay Example 14 Grid Overlay Functionality
    • Grid Overlay 15 Test Article 1
    • An overlay graphic of the smoke evacuator holes is available. The real dimension of the smoke evacuator hole reference graphic is automatically adapted to every selected display scale size. According to the manufacturing tolerances this overlay graphic is freely moveable by the operator. all smoke evacuator holes refences can be arranged in a single overlay graphic with an angle distance of 72° or each can be positioned individually. LTC Smoke Evacuator Reference 16 Get new images LaserVideo™ Profile Scan Smoke Evacuator Reference Applicable for Gun Tubes
    • 5 smoke evacuator reference overlays separated by 72 degrees LaserVideo™Laser Profile 17 Smoke Evacuator Reference Applicable for Gun Tubes
    • Smoke evacuator hole reference Before adjustment – full movement control and color selection 18
    • Smoke evacuator hole reference 19
    • Smoke evacuator hole reference (LVI™) 20
    • 21 Smoke evacuator hole reference (Profile Scan)
    • Smoke Evacuator Holes with local crop 22 Only area within “local crop” box will be analyzed for defects
    • Only area below Smoke evacuators is analyzed for defects 23
    • Report within AFD workspace Area below smoke evacuator holes only 24
    • For missing volume calculation of defects the pipe or gun tube can be divided into equal segments or calculated as a whole length. 25MS Excel Exported Data Segment Volume Calculations
    • Operators can define fail criteria for the missing material volume Sample Defect volume calculation 26 Segment Volume Calculations
    • The bore center axis remains constant throughout the complete barrel scan. Deep defects in the surface do not influence the data or display. Old Centering Processor New Centering Processor 27 Enhanced Centering Offset
    • The default resolution is set to 1024 x 768, but can be rescaled by the operator 28 Actual Photo of Screen Displaying 1024 x 768 Screen Display
    • Two sets of Scan Data (.sdt files) of the same barrel or pipe can be compared with each other and overlaid. This allows comparison of different scan data of the same barrel or pipe at different times. By using this functionality it is possible to display the increasing defects according to time in service or the rounds fired in between the two scans. Machined Sample 1 – Small Defects Machined Sample 3 – Larger Defects 29 Data Comparison
    • Scan Data Compare Comparison between two machined articles 30 Difference Between Small and Large Defects Data is nearly identical and is displayed same as background reference Data is different and is displayed as unique colors and measurement data Tight color palette used to enhance differences
    • Data Comparison Function Information is exported to MS Excel 31 DefectsTab Compare Datasets The Compare Datasets function first builds a report of a single data file (most recent scan data) and then prompts you to select a second data file (baseline – older scan data) for comparison. The second file is compared to first as a “baseline” using the embedded date of the scan data. The produced report contains 3 tabs Defects, Segment Volume Comparison and Plot. The Defects tab consists of a side by side comparison of the defects found on both data files. The Segment Volume Comparison tab lists the volume loss for each segment side by side as well as the difference in segment volumes. The Plot tab tab consists of a graph plot of the difference in volume per segment.
    • Data Comparison volumetric calculations between two data files 32 30-Jul-13 30-Jul-13 Defect Range Clock Position Dataset 1 Segment Volume Dataset 2 (Baseline) Segment Volume Difference in Segment Volumes D1 0-30 1200-0100 0.00 0.00 0.00 D2 15-45 0030-0130 276.98 214.16 62.82 D3 30-60 0100-0200 252.87 192.19 60.68 D4 45-75 0130-0230 1010.88 784.68 226.21 D5 60-90 0200-0300 789.32 607.51 181.81 D6 75-105 0230-0330 1900.20 1494.60 405.60 D7 90-120 0300-0400 1424.38 1106.61 317.77 D8 105-135 0330-0430 2895.93 2326.16 569.77 D9 120-150 0400-0500 2134.14 1732.60 401.54 D10 135-165 0430-0530 0.00 0.00 0.00 D11 150-180 0500-0600 0.00 0.00 0.00 D12 165-195 0530-0630 0.00 0.00 0.00 D13 180-210 0600-0700 0.00 0.00 0.00 D14 195-225 0630-0730 0.00 0.00 0.00 D15 210-240 0700-0800 0.00 0.00 0.00 D16 225-255 0730-0830 0.00 0.00 0.00 D17 240-270 0800-0900 0.00 0.00 0.00 D18 255-285 0830-0930 0.00 0.00 0.00 D19 270-300 0900-1000 0.00 0.00 0.00 D20 285-315 0930-1030 0.00 0.00 0.00 D21 300-330 1000-1100 0.00 0.00 0.00 D22 315-345 1030-1130 0.00 0.00 0.00 D23 330-360 1100-1200 0.00 0.00 0.00 D24 345-15 1130-0030 0.00 0.00 0.00 test piece 3 GB.sdt test piece 2 GB.sdt
    • On the web: www.laser-ndt.com Phone: (425) 885-0607 33 Contact us to learn more