Introduction spot- and projection weld inspection with the Mini Scanner A high level inspection...
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![Page 1: Introduction spot- and projection weld inspection with the Mini Scanner A high level inspection method with a handy instrument AMS TERDAM TECH NOLOGY NDT.](https://reader034.fdocuments.in/reader034/viewer/2022051412/55182d2455034691678b4d65/html5/thumbnails/1.jpg)
Introductionspot- and projection weld
inspectionwith the
Mini Scanner A high level inspection method with a handy instrument
AMSTERDAM
TECHNOLOGYNDT Scan Solutions
![Page 2: Introduction spot- and projection weld inspection with the Mini Scanner A high level inspection method with a handy instrument AMS TERDAM TECH NOLOGY NDT.](https://reader034.fdocuments.in/reader034/viewer/2022051412/55182d2455034691678b4d65/html5/thumbnails/2.jpg)
Raised in 2006 by:
• vAmsterdam SES Software, Engineering and Systems for ultrasonic and Eddy Current inspection machines
• Technolothgy BVEngineering of special machines and instruments for Non Destructive Technology
AMSTERDAM
TECHNOLOGY
![Page 3: Introduction spot- and projection weld inspection with the Mini Scanner A high level inspection method with a handy instrument AMS TERDAM TECH NOLOGY NDT.](https://reader034.fdocuments.in/reader034/viewer/2022051412/55182d2455034691678b4d65/html5/thumbnails/3.jpg)
Overview of build immersion tank based inspection machines
![Page 4: Introduction spot- and projection weld inspection with the Mini Scanner A high level inspection method with a handy instrument AMS TERDAM TECH NOLOGY NDT.](https://reader034.fdocuments.in/reader034/viewer/2022051412/55182d2455034691678b4d65/html5/thumbnails/4.jpg)
Ultrasonic
Immersion tank scanners
•High resolution•Complex shapedproducts •Focused transducers
![Page 5: Introduction spot- and projection weld inspection with the Mini Scanner A high level inspection method with a handy instrument AMS TERDAM TECH NOLOGY NDT.](https://reader034.fdocuments.in/reader034/viewer/2022051412/55182d2455034691678b4d65/html5/thumbnails/5.jpg)
Ultrasonic immersion tank scannerA high quality inspection method
Practical inconveniences •Static position: The samples have to be transported to the scanner•The samples have to drown into the water •Limited tank dimensions•Time-consuming positioning of parts in the tank•Long inspection times•High investments
![Page 6: Introduction spot- and projection weld inspection with the Mini Scanner A high level inspection method with a handy instrument AMS TERDAM TECH NOLOGY NDT.](https://reader034.fdocuments.in/reader034/viewer/2022051412/55182d2455034691678b4d65/html5/thumbnails/6.jpg)
Project with DaimlerChrysler
Project description:
Design a portable ultrasonic scanner for spot weld inspection on location.
Specifications:•Short inspection time•No immersion of the inspected parts•High resolution C-scan presentation •For plate thickness from 0,5 mm•Handheld instrument
![Page 7: Introduction spot- and projection weld inspection with the Mini Scanner A high level inspection method with a handy instrument AMS TERDAM TECH NOLOGY NDT.](https://reader034.fdocuments.in/reader034/viewer/2022051412/55182d2455034691678b4d65/html5/thumbnails/7.jpg)
Mini Scanner
A miniature “immersion tank” scanner.
The scanner head is filled with water and is sealed with a membrane.
Gel is used as an ultrasonic couplant.
•Scan area: 10 x 20 mm•Resolution: 0,1 x 0,1 mm•Scan time: < 5 seconds
![Page 8: Introduction spot- and projection weld inspection with the Mini Scanner A high level inspection method with a handy instrument AMS TERDAM TECH NOLOGY NDT.](https://reader034.fdocuments.in/reader034/viewer/2022051412/55182d2455034691678b4d65/html5/thumbnails/8.jpg)
Diagram spot weld testing with the Mini Scanner
Water
chamber
Mini
Scanner
Moving ultrasonic
transducer
IE=Interface Echo
Couplant
( gel )
The C-scan is picture, composed by the 100 x 200 colored pixels as generated in each scan point.
Yellow gate; In this area the maximum amplitude of the ultrasonic signal is measured
A-scan
presentation
C-scan presentation
IE BEWE
WE=Weld EchoBE=Back Wall Echo
Red gate; sets the start position of the yellow gate
A color related to the value of the maximal amplitude in the yellow gate, is set as a pixel in the C-scan for each scan point.
® Patent pending / all rights by Amsterdam Technology bv
![Page 9: Introduction spot- and projection weld inspection with the Mini Scanner A high level inspection method with a handy instrument AMS TERDAM TECH NOLOGY NDT.](https://reader034.fdocuments.in/reader034/viewer/2022051412/55182d2455034691678b4d65/html5/thumbnails/9.jpg)
Scanning method
•Focused ultrasonic transducer moves in a water filled compartment in the scanner head•35MHz ultrasonic transducer•Diameter focus point < 0,1mm•Membrane sealed water chamber•Spiral shaped scanning pattern•High scanning speed •Gel as ultrasonic couplant
® Patent pending
![Page 10: Introduction spot- and projection weld inspection with the Mini Scanner A high level inspection method with a handy instrument AMS TERDAM TECH NOLOGY NDT.](https://reader034.fdocuments.in/reader034/viewer/2022051412/55182d2455034691678b4d65/html5/thumbnails/10.jpg)
Exchangeable
scan heads
Straight scan head for perpendicular scanner position.
Mirror based scan head for angles scanner position.
Used for difficult to reached spot weld position
![Page 11: Introduction spot- and projection weld inspection with the Mini Scanner A high level inspection method with a handy instrument AMS TERDAM TECH NOLOGY NDT.](https://reader034.fdocuments.in/reader034/viewer/2022051412/55182d2455034691678b4d65/html5/thumbnails/11.jpg)
Mini Scanner System
Scanner with control unit
•PC platform•Windows XP•Touch Screen•USB data exchange
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Spot weld testHigh tension steel plate
A-scan on cursor position- besides the weld -
In the yellow gate: back wall echo of the first plate
Plate thickness first plate
Test parameters:
•Shape of the spot weld nugget
•Shape of the pore
![Page 13: Introduction spot- and projection weld inspection with the Mini Scanner A high level inspection method with a handy instrument AMS TERDAM TECH NOLOGY NDT.](https://reader034.fdocuments.in/reader034/viewer/2022051412/55182d2455034691678b4d65/html5/thumbnails/13.jpg)
Spot weld testHigh tension steel plate
A-scan on cursor position- in the nugget -
Thickness
In the yellow gate: No weld echo (good welded in that position)
In green gate: Back wall echo of the spot weld
Test parameter:
•Thickness of the spot weld
![Page 14: Introduction spot- and projection weld inspection with the Mini Scanner A high level inspection method with a handy instrument AMS TERDAM TECH NOLOGY NDT.](https://reader034.fdocuments.in/reader034/viewer/2022051412/55182d2455034691678b4d65/html5/thumbnails/14.jpg)
Spot weld testHigh tension steel plate
A-scan on cursor position-On the edge of a
pore in the weld -
Depth of the pore in the spot weld
In the yellow gate: Echo of a pore
Test parameters:
•Size of the pore
•Depth of the pore
![Page 15: Introduction spot- and projection weld inspection with the Mini Scanner A high level inspection method with a handy instrument AMS TERDAM TECH NOLOGY NDT.](https://reader034.fdocuments.in/reader034/viewer/2022051412/55182d2455034691678b4d65/html5/thumbnails/15.jpg)
Spot weld testHigh tension steel plate
Measuring dimensions:
•Size of the nugget
By drawing an ellipse around the contour the dimension is calculated
Cursor controlled dimension measurement in C-scan.
![Page 16: Introduction spot- and projection weld inspection with the Mini Scanner A high level inspection method with a handy instrument AMS TERDAM TECH NOLOGY NDT.](https://reader034.fdocuments.in/reader034/viewer/2022051412/55182d2455034691678b4d65/html5/thumbnails/16.jpg)
Spot weld testHigh tension steel plate
Reference: A-scan of position beside the spot weld.
Time Of Flight (TOF)
Inde
ntat
ion
Tim
e O
f F
light
Test parameters:
•Indentation measurement by Time Of Flight (TOF)
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Arplas weldSteel plate
A-scan on cursor position- besides the weld -
In the yellow gate: back wall echo of the first plate
Plate thickness first plate
Test parameters:
•Shape of the Arplas weld
![Page 18: Introduction spot- and projection weld inspection with the Mini Scanner A high level inspection method with a handy instrument AMS TERDAM TECH NOLOGY NDT.](https://reader034.fdocuments.in/reader034/viewer/2022051412/55182d2455034691678b4d65/html5/thumbnails/18.jpg)
Arplas weldSteel plate
A-scan on cursor position- on the weld -
Thickness weld
In the yellow gate: No weld echo (good welded in that position)
In green gate: Back wall echo of the spot weld
Test parameter:
•Thickness of the Arplas weld
![Page 19: Introduction spot- and projection weld inspection with the Mini Scanner A high level inspection method with a handy instrument AMS TERDAM TECH NOLOGY NDT.](https://reader034.fdocuments.in/reader034/viewer/2022051412/55182d2455034691678b4d65/html5/thumbnails/19.jpg)
Arplas weldSteel plate
A-scan on cursor position- on the edge of the weld -
In the yellow gate: 90% weld echo
(green-red colored pixel, on the edge of the weld)
Test parameter:
•Detail of the Arplas weld
•Detecting dimensions
(By moving the cursor)
1,05
7,20
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Software
•Storage of A-scans (ultrasonic signal) for each scanning point•After event data evaluation possible by gate repositioning•Ultrasonic settings storable as pre-set for typical applications•Numerical wall thickness indication•Direct C-scan presentation•Two C-scan presentations with independent gate settings•No picture processing for C-scan presentation
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Application: Nut welding
Welded nut (round) Welded nut (square)
-- The Mini Scanner was placed on the flat plate side --
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Application: laser welding
Laser weld round (Alu plate) Laser weld round (Alu plate)
-- The Mini Scanner was placed on the flat plate side --
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Application: Rivet inspection
Rivet in gearbox part
.
-- The Mini Scanner could be placed on both sides of the part --
![Page 24: Introduction spot- and projection weld inspection with the Mini Scanner A high level inspection method with a handy instrument AMS TERDAM TECH NOLOGY NDT.](https://reader034.fdocuments.in/reader034/viewer/2022051412/55182d2455034691678b4d65/html5/thumbnails/24.jpg)
Application: Porosity check HP casting
A-scan beside a pore A-scan on a pore
High pressure cast aluminum 2.0 mm thickness
Since the mini scanner is used in the field a lot of new applications are coming up.
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Inspection with the Mini Scanner
Applications• Multiple plate weld inspection• Plate thickness 0,5 -8 mm with standard transducers.• Weld between plates and massive parts
Conditions:• Scan head has to be placed on a flat surface• Accessibility scanner to the product• Use of gel allowable
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Practical limitations
Even the mini scanner is subject to the physical limitations caused by the properties of ultrasonic pulse echo techniques, such as:
•Insufficient reflection of the ultrasonic echo’s
Caused by:•Disturbance by sharp edges around the weld•Raw or dirty surface•Scanner not good in position during scanning
![Page 27: Introduction spot- and projection weld inspection with the Mini Scanner A high level inspection method with a handy instrument AMS TERDAM TECH NOLOGY NDT.](https://reader034.fdocuments.in/reader034/viewer/2022051412/55182d2455034691678b4d65/html5/thumbnails/27.jpg)
Latest developments
Smaller model scan unit
Lower weight: -40 %
Reduced scan time: -20%
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Concluding
•Handy ultrasonic C-scan device for detailed weld inspection•Multiple ultrasonic signal evaluation modes•Storage of all ultrasonic data•Improved welding process control possible by inspection on location