PHASED ARRAY INSPECTION PROCEDURES

Machine : Olympus OmniScan MX1 Prepared by: Zulsyamin Suhaimi (July 2016)
Single 'V' Double 'V'
Linear Sectorial Sectorial (Body) Sectorial (Root)
1 1 𝑇 1 𝑇 1
𝐴 = 2𝑇 𝑡𝑎𝑛60 + 𝑐𝑎𝑝 𝐴 = 2𝑇 𝑡𝑎𝑛40 + 𝑐𝑎𝑝 + 𝐴 = 2𝑇 𝑡𝑎𝑛40 + 𝑐𝑎𝑝 + 𝐴 = ( 𝑇 − 3) 𝑡𝑎𝑛70
2 2 4 2 4 2
T > 15mm T < 15mm
B = A - C B = A - C B = A - C
B = Value from B = A - C
equipment 1 𝑇 1 𝑇 1 𝑇 1 𝑇
𝐶 = 𝑐𝑎𝑝 + + 5𝑚𝑚 𝐶 = 𝑐𝑎𝑝 + + 5𝑚𝑚 𝐶 = 𝑐𝑎𝑝 + + 5𝑚𝑚 𝐶 = 𝑐𝑎𝑝 + + 5𝑚𝑚
C = A- B 2 4 2 4 2 4 2 4
Focus Depth, FD = 2T + 0.1(2T) Focus Depth, FD = 2T + 0.1(2T) Focus Depth, FD = 2T + 0.1(2T) Focus Depth, FD = 2T + 0.1(2T)
-------------------------------------------- START ----------------------------------------------
Wizard => Group => Start >> Insert all the values needed
1st Element
Cursor: at VPA 1 Cursor: at 40 Degree Cursor: at 40 Degree Cursor: at 70 Degree
Focal Law => Aperture => Set 1st element until get calculated 'B' Value
To check and verify 'B' Value: UT Setting => Beam => Index Offset
Check & Verify 1st Element
Probe/Part => Position => Index Offset >> Insert calculated 'C' Value Skew 90 = (-) C Value
UT Setting => Beam => Incex Offset >> Must be equal to 'A' Value Skew 270 = (+) C Value
CALIBRATIONS (All Calibrations use SOUND PATH except TCG) [SHE BLOCK]
Velocity (Sound Path)
Cursor: middle VPA Cursor: at 55 Degree Cursor: at 55 Degree Cursor: at 55 Degree Cursor: at 55 Degree
Wedge Delay (Sound Path)
Note: To make wedge delay more smoother, make the gate size larger.
Sensitivity (Sound Path)
TCG Curve (TRUE DEPTH)
Range: More than block thickness to make sure 5 SDH in the coverage Reduce Tresshold to 10% - 20% Check TCG tolerance (Do not exceed 100%)
Weld Configuration
Display => Overlay => Cursor (On); Overlay (On) Note: Turn OFF the cursor after check weld coverage (before save file)
UT Setting => Receiver => Filter (Auto) ; Video Filter (Auto)
Range
Cursor: at Middle VPA (50%) Cursor: at 55 Degree Cursor: at 55 Degree Cursor: at 55 Degree
Start < 1/2 Thickness Start < 1/2 Thickness Start < 1/4 Thickness Start < 1/4 Thickness
Range > 2 x Thickness Range > 2 x Thickness Range > 2 x Thickness Range > 2 x Thickness
Range between B0 - T1 Range between B0 - T1 - B2 Range Between B0 - T1
Gates
Start Before B0 (1/2 Skip) Start Before B0 (1/2 Skip) Start Before B0 (Before 1/4 T)
End After T1 (Full Skip) End After B2 (1.5 Skip) End After T1 (Full Skip)
Weld Coverage
UT => T UT => 1/2 T (For root, beam coverage must 3mm before 1/2 T)
Reference
Index => - 1/2 Capping Index => - 1/2 Capping
UT => 2 T UT => 2 T
Measure
Index => 1/2 Capping Index => 1/2 Capping
- Value C/L + Value - Value C/L + Value
- Value C/L + Value - Value C/L + Value
Gate Start Gate Start

(1/2 T)
Gate Start Gate Start
B0 B0 B0 B0
70 70
70

T1 T1
Gate End T1 T1
Gate End Gate End
VPA 1 40
B2 40
>> 3mm on root face
Gate End
before 1/2 Thickness
40

Scan => Inspection => Scan >> Encoder 1

Encoder Setup => Speed >> 150 mm/s
Encoder => Resolution >> Refer encoder resolution (eg: 32.8 Step/mm)
C - Scan "ON" Display => Selection => C - Scan 1 >> A%
UT Setting => Advance => Set. Ref. => dB Ref >> On
Scanning Gain Setting
UT Setting => General => Gain - r >> Add 6dB
Skew 90 (Left) Skew 270 (Right)
Probe/Part => Position => Index Offset >>> (-) C Value Probe/Part => Position => Index Offset >>> (+) C Value
Skew Setting
=> Skew >>> 90 => Skew >>> 270
Scan => Encoder => Polarity >> Normal Scan => Encoder => Polarity >> Inverse
File ID: Plate/Weld Number_Name_DDMMYY_Skew90/270_Datum_dBRef_Scan Type
Save File Setup (Skew 90 & 270)
Save file required: Setup.ops Note: Turn OFF the cursor before save file
File => Open => Setup file for Skew 90 / 270
Scan => Area => Scan Start >> 0mm
=> Scan End >> Length of sample (Tolerance Offset +/- 10mm scanning may be used depend on sample condition)
Scan Setup
When scanning complete, "Freeze" to make sure no missed data line, scanning misalignment, no coupling missed and continue to save the file.
If any saturated signal (Out off screen signal) found on scanning area, reduce dB setting and repeat scanning steps and save the data file.
Sizing defect: 6dB, 20 dB and/or maximun amplitude
File ID: Plate/Weld Number_Name_DDMMYY_Skew90/270_Datum_dBRef_Scan Type
Save Data / Report Files for Skew 90 & 270 Save file required: Data.opd
Report.html Note: Turn OFF the cursor before save file
SETUP COMPLETED !!! - PROCEED TO DRAWING AND REPORTING