Phased Array Probe
One phased array probe consists of many small elements, each one can be pulsed on separately. The structure of the phased array probe is like putting many single element probes into one probe.
.jpg)
Advantage of Phased Array Probe
Small Size and Multi-channel
One small phased array probe can take place of multiple conventional probes to access some difficult-to-reach area.
For one phased array probe, multi groups of element and multi angles can be applied for scanning at the same time, fully covering the welding area and enhancing the inspection efficiency.
Faster Inspection Efficiency
Conventional UT adopts the raster scanning achieved by the connection of probe and encoder, which is an order of magnitude slower than the phased array technology with electronic scanning.
.jpg)
Higher Inspection Efficiency
Conventional probes adopts raster scanning, which is an order of magnitude slower than the phased array technology with electronic scanning.
One phased array probe consists of many small elements, each one can be pulsed on separately. The structure of the phased array probe is like putting many single element probes into one probe.
Advantage of Phased Array Probe
Small Size and Multi-channel
One small phased array probe can take place of multiple conventional probes to access some difficult-to-reach area.
For one phased array probe, multi groups of element and multi angles can be applied for scanning at the same time, fully covering the welding area and enhancing the inspection efficiency.
Faster Inspection Efficiency
Conventional UT adopts the raster scanning achieved by the connection of probe and encoder, which is an order of magnitude slower than the phased array technology with electronic scanning.
Higher Inspection Efficiency
Conventional probes adopts raster scanning, which is an order of magnitude slower than the phased array technology with electronic scanning.
SIUI can Provide a Variety of Probes for Different Kinds of Inspections
Custom Phased Array Probes
Standard Phased Array Probes
Linear 1.5-D array 2-D array
Convex Concave
Custom Phased Array Probes
| Near-Wall Probe | Flexible PA Probe | Matrix PA Probe | |||||||||||||||
| SIUI can pce custom phased array probes to suit specific | |||||||||||||||||
| applications and geometries. | |||||||||||||||||
| For custom probe, please provide following info: | |||||||||||||||||
| Frequency | Number | Pitch | Active | ||||||||||||||
| ●Frequency | |||||||||||||||||
| of | aperture | ||||||||||||||||
| ●Number of elements, pitch and elevation | |||||||||||||||||
| MHz | elements | mm | mm | ||||||||||||||
| ●Probe type (angle beam, immersion, integrated wedge, matrix) | |||||||||||||||||
| ●Array shape (flat, curve) | X | Y | X | Y | X | Y | |||||||||||
| ●Cable jacket required | 2.0 | 3 | 10 | 5 | 3 | 15 | 30 | ||||||||||
| ●Cable length | |||||||||||||||||
| 5.0 | 8 | 8 | 1 | 1 | 8 | 8 | |||||||||||
| ●Connector type | |||||||||||||||||
| ●Housing and/or dimension constraints | Custom Matrix Array Probe Specification | ||||||||||||||||
| ●Application | |||||||||||||||||
| ●Comparable UT single element transducer | |||||||||||||||||
Standard Phased Array Probes
Linear 1.5-D array 2-D array
Convex Concave
Skewing Variable angle Dual linear Dual 1.5-D
Ordering Code for Phased Array Probe
7.5L128-0.5-10-N-P-110-2.0-T1
can be provided.
Other parameters can be added after the model name following the suffix form in “-”.
D5 P1 T1 C1 H1
7.5L128-0.5-10-N-P-110-2.0-T1
| Frequency | Connector Type | ||||||||||||||||||||
| Array Mode | Cable Length | ||||||||||||||||||||
| Element Number | Electric Capacity | ||||||||||||||||||||
| Array Pitch | Cable Type | ||||||||||||||||||||
| Elevation | Coupling Type | ||||||||||||||||||||
| For Example | |||||||||||||||||||||
| Frequency | Array Pitch | Electric Capacity | |||||||||||||||||||
| 7.5=7.5MHz | Unit: mm | Electric capacity each meter. | |||||||||||||||||||
| 0.5=0.5mm | 110=110pF for one meter; | ||||||||||||||||||||
| Array Mode | Elevation | 50=50pF for one meter. | |||||||||||||||||||
| L=Linear | Unit: mm | Cable Length | |||||||||||||||||||
| C=Convex | 10=10mm | Unit: m | |||||||||||||||||||
| V=Concave | 2.0=2 meters | ||||||||||||||||||||
| M=Matrix | Coupling Type | Connector Type | |||||||||||||||||||
| N is coupled by wedge. I is coupled by | T1= Tyco TC ZIF 260P | ||||||||||||||||||||
| Element Number | immersion. E is coupled by integrated | P1=Omni Connector | |||||||||||||||||||
| 128=128 elements | wedge. | H1=Hypertronics | |||||||||||||||||||
| D1=DL-156P | |||||||||||||||||||||
| Cable Type | D2=DL-96P | ||||||||||||||||||||
| P=PVC wrap | D5=DL-260P | ||||||||||||||||||||
| Metal armor and radiation proof wrap | C1=High Density 78 Way D-Type | ||||||||||||||||||||
can be provided.
Other parameters can be added after the model name following the suffix form in “-”.
D5 P1 T1 C1 H1
SIUI can provide PA probes with different connectors compatible with PA equipments from other manufacturers.
Universal Probes
Small/ Medium/ Large-Size & Low Frequency Probes
Small/ Medium/ Large-Size & Low Frequency Probes
H
H| L | W | L | W |
| Small-size Linear Array Probe | Medium-size Linear Array Probe | ||
Superior Features:
Sound Beam angle, focusing and scan step can be electronically controlled;
Wide scan coverage can be achieved by one single probe; Replaceable angle wedge and delay block, with customizable surface curvature;
Array pitch and elevation can be customized.
H
H
| L | ||
| W | L | W |
| Large-size Linear Array Probe | Low Frequency Probe |
Typical Application
●Small-size Linear Array Probe
--good for inspection on limited space;
●Medium-size Linear Array Probe
--suitable for a wide range of applications;
●Large-size Linear Array Probe
--inspections of cracks on plate-type pieces;
●Low Frequency Probe
--inspection on thick plates or noisy or granular material.
| Frequency | Number | Pitch | Active | Housing Dimension | ||||
| Probe Model | of | aperture | (mm) | |||||
| MHz | elements | mm | mm | L | W | H | ||
| Small-size Linear Array Probe | ||||||||
| 2.5L8-1.0-9 | 2.5 | 8 | 1 | 8 | 15 | 28 | 28 | |
| 4.0L16-0.5-9 | 4 | 16 | 0.5 | 8 | 15 | 28 | 33.5 | |
| 5.0L16-0.5-9 | 5 | 16 | 0.5 | 8 | 15 | 28 | 33.5 | |
| 5.0L16-0.6-10 | 5 | 16 | 0.6 | 9.6 | 17 | 28 | 33.5 | |
| 7.5L16-0.5-9 | 7.5 | 16 | 0.5 | 8 | 15 | 28 | 33.5 | |
| 10L16-0.5-9 | 10 | 16 | 0.5 | 8 | 15 | 28 | 33.5 | |
| Medium-size Linear Array Probe | ||||||||
| 2.5L16-1.0-10 | 2.5 | 16 | 1 | 16 | 28 | 31 | 33 | |
| 5.0L32-0.5-10 | 5 | 32 | 0.5 | 16 | 28 | 31 | 33 | |
| 5.0L32-0.6-10 | 5 | 32 | 0.6 | 19.2 | 32 | 31 | 33 | |
| 7.5L32-0.5-10 | 7.5 | 32 | 0.5 | 16 | 28 | 31 | 33 | |
| Large-size Linear Array Probe | ||||||||
| 5.0L64-1.0-10 | 5 | 64 | 1 | 64 | 84 | 36 | 36 | |
| 5.0L64-0.5-10 | 5 | 64 | 0.5 | 32 | 45 | 31 | 33 | |
| 5.0L64-0.6-10 | 5 | 64 | 0.6 | 38.4 | 52 | 31 | 33 | |
| 5.0L128-0.5-10 | 5 | 128 | 0.5 | 64 | 84 | 36 | 36 | |
| 7.5L64-1.0-10 | 7.5 | 64 | 1 | 64 | 84 | 36 | 36 | |
| 7.5L128-0.5-10 | 7.5 | 128 | 0.5 | 64 | 84 | 36 | 36 | |
| Low Frequency Probe | ||||||||
| 2.0L32-1.0-10 | 2 | 32 | 1 | 32 | 45 | 31 | 33 | |
| 1.5L16-2.0-10 | 1.5 | 16 | 2 | 32 | 45 | 31 | 33 | |
The probes are equipped with standard 2m cable.
Immersion ProbesH
W
L
H
R
L
WImmersion Linear Array Probe
Superior Features:
Sound Beam angle, focusing and scan step can be electronically controlled;
Wide scan coverage can be achieved by one single probe; *Probe size and outer housing can be customized.
Typical Application:
Suitable for underwater inspection;
Inspection of thin plate or tubing (steel, aluminum, or other);
Composite inspection for delamination;
Inline thickness gaging;
Automated scanning.
Immersion Curved Array Probe
Superior Features:
Adopt immersion method for inspection;
Sound Beam angle, focusing and scan step can be electronically controlled;
Wide scan coverage can be achieved by one single probe; The curvature radius of curved probes can be customized; *Different parameters can be customized.
.
Typical Application:
Suitable for underwater inspection; Inspection of tubing;
Inspection of carbon fiber reinforced polymers (CFRP) corners; Inspection of composite materials for delamination.
| Frequency | Number | Pitch | Active | ||||
| Probe Model | of | aperture | |||||
| MHz | elements | mm | mm | ||||
| Immersion Linear Array Probe | |||||||
| 5.0L64-0.6-10-I | 5 | 64 | 0.6 | 38 | |||
| 5.0L64-1.0-10-I | 5 | 64 | 1 | 64 | |||
| 7.5L128-0.39-6-I | 7.5 | 128 | 0.39 | 50 | |||
| Small-size immersion curved array probe | 7.5L128-0.6-6-I | 7.5 | 128 | 0.6 | 76.8 | ||
| 2.0L64-0.6-10-I | 2.0 | 64 | 0.6 | 64 | |||
| Immersion Curved Array Probe | |||||||
| 3.5V128-0.6-10-R65-I | 3.5 | 128 | 0.6 | / | |||
| 3.5V64-1.6-12-R65-I | 3.5 | 64 | 1.6 | / | |||
| 5.0V64-1.0-10-R40-I | 5.0 | 64 | 1.0 | / | |||
| 10.0V128-0.6-10-R40-I | 10.0 | 128 | 0.6 | / | |||
The probes are equipped with standard 2m cable.
Large-size immersion curved array probe Housing dimension can be customized.
High Penetration Probe & Small Footprint Probe
High Penetration Probes
High Penetration Probes
H
L W
Superior Features:
Good resolution and high penetration;
Replaceable angle wedge and delay block, with customizable surface curvature;
Array pitch and elevation can be customized.
Typical Application:
Detection of flaws and sizing;
Inspections of defects in forgings;
Inspection on noisy or granular material.
H
W
L
Small Footprint Probe
Superior Features:
Compact size;
Cable connector can come out from either the side or the top; Replaceable angle wedge and delay block, with customizable surface curvature;
Array pitch and elevation can be customized.
Typical Application:
Inspection on limited space;
Detection of flaws and sizing;
Inspection on reduced probe access, or with surfaces with complex geometry.
| Frequency | Number | Pitch | Active | Housing Dimension | |||
| Probe Model | of | aperture | (mm) | ||||
| MHz | elements | mm | mm | L | W | H | |
| High Penetration Probe | |||||||
| 2.5L16-1.2-20 | 2.5 | 16 | 1.2 | 19.2 | 40 | 48 | 29 |
| 5.0L32-0.6-20 | 5 | 32 | 0.6 | 19.2 | 40 | 48 | 29 |
| Small Footprint Probe | |||||||
| 5.0L10-0.6-6 | 5 | 10 | 0.6 | 6 | 13 | 10 | 23 |
| 7.5L10-0.6-6 | 7.5 | 10 | 0.6 | 6 | 13 | 10 | 23 |
| 10.0L10-0.6-6 | 10.0 | 10 | 0.6 | 6 | 10 | 10 | 23 |
The probes are equipped with standard 2m cable.
Wedge for Phased Array Probe
Superior Features:
Variable angles in steel for selection.
Wedges with different specifications can be made.
Compatible with crawler.
Anti-wear structure design are available.
Wedges with curvature can be made on request.
64N55S 64N00L-20 16N00L-40 8N55S 8N00L-40 8N00L-20
For Example
Superior Features:
Variable angles in steel for selection.
Wedges with different specifications can be made.
Compatible with crawler.
Anti-wear structure design are available.
Wedges with curvature can be made on request.
64N55S 64N00L-20 16N00L-40 8N55S 8N00L-40 8N00L-20
| Array Length | Pipe Diameter | |||||||||||||
| Probe Mounting | Curvature Type | |||||||||||||
| Refracted Angle in Steel | Irrigation | |||||||||||||
| Wave Type | ||||||||||||||
For Example
| Active Aperture | Refracted Angle in Steel | Curvature Type |
| 64=Compatible phased | 55=55° | AOD, COD, AID, CID are available. |
| array probe is 64mm. | Wave Type | AOD=Axial outside diameter |
| Active Aperture= Pitch × | S=Shear wave in steel | COD=Circumferential outside |
| Elements | L=longitudinal wave in steel | diameter |
| AID=Axial inside diameter | ||
| Probe Mounting | Irrigation | CID=Circumferential inside |
| N=Normal | I=Irrigation | diameter |
| L=Skew (in lateral direction) | Note: without “I” is non-irrigation | Pipe Diameter |
| Pipe diameter in mm. | ||
| AOD and COD is the outside diameter. | ||
| AID and CID is the inside diameter. | ||
| 80=80mm | ||
| Wedge | Description | X | XT | Z | Velocity | Refracted | L | W | H | |
| Model | Ang | |||||||||
| mm | mm | mm | m/s | mm | mm | mm | ||||
| Standard Wedge | ||||||||||
| 64N00L-20 | 20mm delay block | 73.5 | 10.5 | 20 | 2360 | 0° | 84 | 35.6 | 20 | |
| 64N00L-40 | 40mm delay block | 73.5 | 10.5 | 40 | 2360 | 0° | 84 | 35.6 | 40 | |
| 64N55S | 30-70° | 108.67 | 8.93 | 14.48 | 2360 | 55° | 117.6 | 36 | 58.5 | |
| shear wave angle block | ||||||||||
| 16N00L-20 | 20mm delay block | 21.75 | 6.25 | 20 | 2360 | 0° | 28 | 31 | 20 | |
| 16N00L-40 | 40mm delay block | 21.75 | 6.25 | 40 | 2360 | 0° | 28 | 31 | 40 | |
| 16N55S | 30-70° | 34.94 | 5.06 | 9.74 | 2360 | 55° | 40 | 31 | 22.5 | |
| shear wave angle block | ||||||||||
| 8N00L-20 | 20mm delay block | 11.25 | 3.75 | 20 | 2360 | 0° | 15 | 28 | 20 | |
| 8N00L-40 | 40mm delay block | 11.25 | 3.75 | 40 | 2360 | 0° | 15 | 28 | 40 | |
| 8N55S | 30-70° | 21.69 | 3.31 | 8.4 | 2360 | 55° | 25 | 28 | 15 | |
| shear wave angle block | ||||||||||
| 40N00L-20 | 20mm delay block | 44.9 | 7.1 | 20 | 2360 | 0° | 52 | 31 | 20 | |
| 40N00L-40 | 40mm delay block | 44.9 | 7.1 | 40 | 2360 | 0° | 52 | 31 | 40 | |
| 40N55S | 30-70° | 73.24 | 7.76 | 13.64 | 2360 | 55° | 81 | 31 | 41.5 | |
| shear wave angle block | ||||||||||
| 32N00L-20 | 20mm delay block | 38 | 7 | 20 | 2360 | 0° | 45 | 31 | 20 | |
| 32N00L-40 | 40mm delay block | 38 | 7 | 40 | 2360 | 0° | 45 | 31 | 40 | |
| 32N55S | 30-70° | 64.44 | 7.56 | 13.49 | 2360 | 55° | 72 | 31 | 37.5 | |
| shear wave angle block | ||||||||||
| 20N00L-20 | 20mm delay block | 25.3 | 6.7 | 20 | 2360 | 0° | 32 | 31 | 20 | |
| 20N00L-40 | 40mm delay block | 25.3 | 6.7 | 40 | 2360 | 0° | 32 | 31 | 40 | |
| 20N55S | 30-70° | 52.58 | 5.42 | 18.94 | 2360 | 55° | 58 | 31 | 35.5 | |
| shear wave angle block | ||||||||||
| 10N00L-20 | 20mm delay block | 13 | 4 | 20 | 2360 | 0° | 17 | 28 | 20 | |
| 10N00L-40 | 40mm delay block | 13 | 4 | 40 | 2360 | 0° | 17 | 28 | 40 | |
| 10N55S | 30-70° | 27.26 | 3.24 | 8.35 | 2360 | 55° | 30.5 | 28 | 17.5 | |
| shear wave angle block | ||||||||||
High Temperature Wedge
High temperature wedge enables testing on surface up to 200℃.
Maximum contact time is 10 seconds.
Cool to ambient before reuse.
Curved Wedge
All the wedge models available now can be customized with curvature.
High temperature wedge enables testing on surface up to 200℃.
Maximum contact time is 10 seconds.
Cool to ambient before reuse.
| Wedge | Description | X | XT | Z | Velocity | Refracted | L | W | H | |
| Model | mm | mm | mm | m/s | Ang | mm | mm | mm | ||
| High Temperature Wedge | ||||||||||
| 64N00L-20-H | 20mm Delay Block | 73.5 | 10.5 | 20 | 2590 | 0° | 84 | 35.6 | 20 | |
| 64N00L-40-H | 40mm Delay Block | 73.5 | 10.5 | 40 | 2590 | 0° | 84 | 35.6 | 40 | |
| 16N00L-20-H | 20mm Delay Block | 21.75 | 6.25 | 20 | 2590 | 0° | 28 | 31 | 20 | |
| 16N00L-40-H | 40mm Delay Block | 21.75 | 6.25 | 40 | 2590 | 0° | 28 | 31 | 40 | |
| 8N00L-20-H | 20mm Delay Block | 11.25 | 3.75 | 20 | 2590 | 0° | 15 | 28 | 20 | |
| 8N00L-40-H | 40mm Delay Block | 11.25 | 3.75 | 40 | 2590 | 0° | 15 | 28 | 40 | |
| 40N00L-20-H | 20mm Delay Block | 44.9 | 7.1 | 20 | 2590 | 0° | 52 | 31 | 20 | |
| 40N00L-40-H | 40mm Delay Block | 44.9 | 7.1 | 40 | 2590 | 0° | 52 | 31 | 40 | |
| 32N00L-20-H | 20mm Delay Block | 38 | 7 | 20 | 2590 | 0° | 45 | 31 | 20 | |
| 32N00L-40-H | 40mm Delay Block | 38 | 7 | 40 | 2590 | 0° | 45 | 31 | 40 | |
| 20N00L-20-H | 20mm Delay Block | 25.3 | 6.7 | 20 | 2590 | 0° | 32 | 31 | 20 | |
| 20N00L-40-H | 40mm Delay Block | 25.3 | 6.7 | 40 | 2590 | 0° | 32 | 31 | 40 | |
| 10N00L-20-H | 20mm Delay Block | 13 | 4 | 20 | 2590 | 0° | 17 | 28 | 20 | |
| 10N00L-40-H | 40mm Delay Block | 13 | 4 | 40 | 2590 | 0° | 17 | 28 | 40 | |
Curved Wedge
All the wedge models available now can be customized with curvature.
Irrigation Wedge
Water is used as couplant;
Suitable for automatic inspection.
Conventional wedges with surface curvature can be made based
on requirement.
Crawler for Phased Array
Different crawlers compatible with PA probes can be provided by SIUI.
Water is used as couplant;
Suitable for automatic inspection.
Conventional wedges with surface curvature can be made based
on requirement.
| Wedge | Description | X | XT | Z | Velocity | Refracted | L | W | H | |
| Model | mm | mm | mm | m/s | Ang | mm | mm | mm | ||
| Irrigation Wedge | ||||||||||
| 8N55S-I | 30-70° | 21.69 | 3.31 | 8.4 | 2360 | 55° | 25 | 39 | 15 | |
| shear wave angle block | ||||||||||
| 8N00L-20-I | 20mm Delay Block | 25.25 | 9.75 | 20 | 2360 | 0° | 35 | 28 | 20 | |
| 8N00L-40-I | 40mm Delay Block | 25.25 | 9.75 | 40 | 2360 | 0° | 35 | 28 | 40 | |
| 16N55S-I | 30-70° | 34.94 | 5.06 | 9.67 | 2360 | 55° | 40 | 43 | 22.5 | |
| shear wave angle block | ||||||||||
| 16N00L-20-I | 20mm Delay Block | 43.5 | 4.5 | 20 | 2360 | 0° | 48 | 31 | 20 | |
| 16N00L-40-I | 40mm Delay Block | 43.5 | 4.5 | 40 | 2360 | 0° | 48 | 31 | 40 | |
Crawler for Phased Array
Different crawlers compatible with PA probes can be provided by SIUI.
Example of Phased Array Probe Test Report
Probe:5.0L64-1.0-10
Serial Number:********
Probe Information
Frequency: 5.0MHz
Probe Type: Linear Array
Element Count: 64
Cable Length: 2.0M
Active Area Dimension
Length: 64mm
Elevation: 10mm
Pitch: 1.0mm
Matching Medium: Rexolite
Probe Conformance Summary
Overall Vp-p Sensitivity: 2.39dB (<=3dB)
Average Center Frequency: 5.13MHz(5.0MHz+/-10%)
Average -6dB Bandwidth: 78.46%(>=60%)
Probe Test Condition
Instrument Model: 5052UA
Pulse Voltage: 120V
Pulse Type: Negative
Dumping: 50ohm
Energy: 1
Target Medium: Rexolite
Target Type: 25.4mm Plate
Probe:5.0L64-1.0-10
Serial Number:********
Probe Information
Frequency: 5.0MHz
Probe Type: Linear Array
Element Count: 64
Cable Length: 2.0M
Active Area Dimension
Length: 64mm
Elevation: 10mm
Pitch: 1.0mm
Matching Medium: Rexolite
Probe Conformance Summary
Overall Vp-p Sensitivity: 2.39dB (<=3dB)
Average Center Frequency: 5.13MHz(5.0MHz+/-10%)
Average -6dB Bandwidth: 78.46%(>=60%)
Probe Test Condition
Instrument Model: 5052UA
Pulse Voltage: 120V
Pulse Type: Negative
Dumping: 50ohm
Energy: 1
Target Medium: Rexolite
Target Type: 25.4mm Plate
Probe Test Result
| Parameters | Unit | Min | Max | Mean | |
| Peak-Peak Sensitivity | dB | -47.61 | -45.22 | -46.79 | |
| -20dB Pulse Length | nS | 582.4 | 636 | 605.23 | |
| -6dB Center Frequency | MHz | 5.07 | 5.25 | 5.13 | |
| -6dB Bandwidth | % | 74.59 | 80.39 | 78.46 | |
Probe Test Graph
1. Element Waveform: 2. Element Waveform FFT:
SIUI can Provide
A series of phased array probes compatible with different phased array flaw detectors; Customization of phased array probes and wedges with different specifications.
TOFD Probes
Ordering Information:
Test Report：T3.5-10L-M/UN 9mm plexiglass test block
Ordering Information:
| T2-12L-UN | ||||||||||||||||||
| TOFD | Screw Thread Unit:M/ UN | |||||||||||||||||
| Frequency | Connector Type: L-LEMO 00,MD-Microdot | |||||||||||||||||
| LEMO 00 Connector | Microdot Connector | |||||||||||||||||
| Crystal dimension Φ12 | ||||||||||||||||||
| Frequency | Crystal | Max. Pulse | Housing | |||||||||||||||
| Diameter D1 | Voltage | Dimension | Screw Thread | |||||||||||||||
| Probe | Compatible Wedge | |||||||||||||||||
| Unit | ||||||||||||||||||
| MHz | mm | V | mm | |||||||||||||||
| T2-12L-** | 2 | 12 | -800 | D2:18 | ||||||||||||||
| H:32 | M:M18x1 | |||||||||||||||||
| TFD Series | ||||||||||||||||||
| T2-14L-** | 2 | 14 | -800 | D2:18 | UN:11/16-24UNEF | |||||||||||||
| H:32 | ||||||||||||||||||
| Test Report：T2-14L-M/UN 9mm plexiglass test block | ||||||||||||||||||
| Frequency | Crystal | Max. Pulse | Housing | Screw Thread | |||
| Compatible Wedge | |||||||
| Probe | Diameter D1 | Voltage | Dimension | ||||
| Unit | |||||||
| MHz | mm | V | mm | ||||
| T2-10L-** | 2 | 10 | -800 | D2:18 | |||
| H:32 | |||||||
| T2.5-10L-** | 2.5 | 10 | -700 | D2:18 | |||
| H:32 | M:M18x1 | ||||||
| TFD Series | |||||||
| T3.5-10L-** | 3.5 | 10 | -700 | D2:18 | UN:11/16-24UNEF | ||
| H:32 | |||||||
| T5-10L-** | 5 | 10 | -500 | D2:18 | |||
| H:32 | |||||||
Test Report：T3.5-10L-M/UN 9mm plexiglass test block
| Frequency | Crystal | Max. Pulse | Housing | ||||
| Probe | Diameter D1 | Voltage | Dimension | Screw Thread | Compatible Wedge | ||
| Unit | |||||||
| MHz | mm | V | mm | ||||
| T4-6L-** | 4 | 6 | -500 | D2:11.5 | |||
| H:28.7 | |||||||
| T5-3L-** | 5 | 3 | -500 | D2:11.5 | |||
| H:28.7 | |||||||
| M:M10x1 | |||||||
| T5-6L-** | 5 | 6 | -500 | D2:11.5 | TFB Series | ||
| H:28.7 | UN:3/8-32UNEF | ||||||
| T7.5-3L-** | 7.5 | 3 | -300 | D2:11.5 | |||
| H:28.7 | |||||||
| T7.5-6L-** | 7.5 | 6 | -300 | D2:11.5 | |||
| H:28.7 | |||||||
Test Report：T5-6L-M/UN 9mm plexiglass test block
| Frequency | Crystal | Max. Pulse | Housing | Screw Thread | |||
| Probe | Diameter D1 | Compatible Wedge | |||||
| Voltage | Dimension | Unit | |||||
| MHz | mm | ||||||
| T10-3L-** | 10 | 3 | -300 | D2:11.5 | |||
| H:28.7 | |||||||
| M:M10x1 | |||||||
| T10-6L-** | 10 | 6 | -300 | D2:11.5 | TFC Series | ||
| H:28.7 | UN:3/8-32UNEF | ||||||
| T15-3L-** | 15 | 3 | -200 | D2:11.5 | |||
| H:28.7 | |||||||
Test Report：T10-3L-M/UN 9mm polystyrene test block
SIUI can Provide
A series of TOFD probes compatible with different TOFD flaw detectors;
Customization of TOFD probes and wedges with different specifications.
Wedge for TOFD Probe
Ordering Information:
TFB-45-UN-I
Non-irrigation Wedge
Ordering Information:
TFB-45-UN-I
| Series Code | I:irrigation/ without “I” is non-irrigation | ||||||
| Refracted Angle in Steel | Screw Thread Unit:M/ UN | ||||||
Non-irrigation Wedge
| Wedge | Type | Velocity | Refracted | L | W | H | D | Screw Thread | |
| Model | m/s | Angle in Steel | mm | mm | mm | mm | Unit | ||
| TFB-45-** | 2730 | 45° | 24 | 16 | 16 | 3 | M:M10x1 | ||
| TFB-60-** | 2730 | 60° | 24 | 16 | 16 | 3 | |||
| UN:3/8-32UNEF | |||||||||
| TFB-70-** | 2730 | 70° | 24 | 16 | 16 | 3 | |||
| TFC-45-** | Longitudinal | 2360 | 45° | 24 | 16 | 14.6 | 3 | M:M10x1 | |
| wave wedge | |||||||||
| TFC-60-** | 2360 | 60° | 24 | 16 | 14.6 | 3 | |||
| UN:3/8-32UNEF | |||||||||
| TFC-70-** | 2360 | 70° | 24 | 16 | 14.6 | 3 | |||
| TFD-45-** | 2730 | 45° | 31 | 24 | 21.5 | 3 | M:M18x1 | ||
| TFD-60-** | 2730 | 60° | 31 | 24 | 21.5 | 3 | |||
| UN:11/16-24UNEF | |||||||||
| TFD-70-** | 2730 | 70° | 31 | 24 | 21.5 | 3 | |||
Irrigation Wedge
Crawler for TOFD
Different crawlers compatible with TOFD probes can be provided by SIUI.
| Wedge | Velocity | Refracted | L | W | H | Outer | Inner | |||
| Type | Aperture D | Aperture D | Screw Thread Unit | |||||||
| Model | Angle in Steel | |||||||||
| m/s | mm | mm | mm | mm | mm | |||||
| TFB-45-**-I | 2730 | 45 | 20 | 32 | 13 | 6 | 3 | M:M10x1 | ||
| TFB-60-**-I | 2730 | 60 | 20 | 32 | 13 | 6 | 3 | |||
| UN:3/8-32UNEF | ||||||||||
| TFB-70-**-I | 2730 | 70 | 20 | 32 | 13 | 6 | 3 | |||
| TFC-45-**-I | Longitudinal | 2360 | 45 | 20 | 32 | 12.5 | 6 | 3 | M:M10x1 | |
| TFC-60-**-I | 2360 | 60 | 20 | 32 | 12.5 | 6 | 3 | |||
| Wave Wedge | UN:3/8-32UNEF | |||||||||
| TFC-70-**-I | 2360 | 70 | 20 | 32 | 12.5 | 6 | 3 | |||
| TFD-45-**-I | 2730 | 45 | 30.5 | 32 | 18 | 6 | 3 | M:M18x1 | ||
| TFD-60-**-I | 2730 | 60 | 30.5 | 32 | 18 | 6 | 3 | |||
| UN:11/16-24UNEF | ||||||||||
| TFD-70-**-I | 2730 | 70 | 30.5 | 32 | 18 | 6 | 3 | |||
Crawler for TOFD
Different crawlers compatible with TOFD probes can be provided by SIUI.
TOFD Probe Selection
(Based on ASTM E2373-04)
Probe selection shall be based on the application requirements. The following tables provide initial recommended probe parameters for specified thickness ranges in ferritic steels. For austenitic or other attenuative materials, nominal frequencies normally need to be reduced and element sizes increased.
Table 1 For Steel Thickness Ranges up to 75 mm (3 in.)
| Nominal Wall | Nominal Frequency | Element Size | |||
| Thickness | Recommended Angles | ||||
| mm(in.) | MHz | mm(in.) | |||
| <12 | (0.375) | 10 to 15 | 2 to 6 (0.08 to 0.25) | 60 to 70° | |
| 12 to < 35 | (0.375 to 1.4) | 5 to 10 | 2 to 6 (0.08 to 0.25) | 50 to 70° | |
| 35 to < 75 (1.4 to 3) | 2 to 5 | 6 to 12 (0.25 to 0.5) | 45 to 65° | ||
For thickness ranges in steel 75 to 300 mm, the beam divergence from a single element is not likely to provide sufficient intensity for good detection over the entire thickness. For thickness 75 mm (3 in.) and greater (in steel) the examination piece shall be divided into multiple zones. For thickness 75 mm (3 in.) and greater (in steel) and when required in smaller thickness, sensitivity targets shall be placed in a reference block at least at 25% and 75% through thickness in each zone to verify that there is adequate beam coverage for the multiple zone technique used.
Table 2 For Steel Thickness Range 75 mm (3 in.) to 300 mm (12 in.)
| Wall Thickness Zone | Nominal Frequency | Element Size | Nominal Angles | |
| mm(in.) | MHz | mm(in.) | ||
| <35 (0 to 1.4) | 5 to 10 | 2 to 6 (0.08 to 0.25) | 50 to 70° | |
| 35 to < 100 (1.4 to 4) | 2 to 7.5 | 6 to 12 (0.25 to 0.5) | 45 to 65° | |
| 100 to < 300 (4 to 12) | 2 to 7.5 | 6 to 12 (0.25 to 0.5) | 45 to 65° | |
On thick sections requiring more than one TOFD pair the lateral wave or back-wall signal may not always be visible. Therefore, provision in the linearizing algorithms must be made to permit inputs of other parameters instead of the lateral and back-wall signal positions. For wall thickness less than 75 mm (3 in.), technique qualifications may require they too be divided into smaller ranges with each range addressed by a dedicated TOFD pair.
