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Overview

OmniScan™ X3 Phased Array Flaw Detector with TFM

Detect and Define Smaller HTHA Voids

Detecting HTHA as early as possible is so critical that multiple inspection methods are often used to increase the chance of detection. Time-of-flight diffraction (TOFD), full matrix capture (FMC), and Dual Linear Array (DLA) have demonstrated to be especially effective acquisition methods for this inspection application. The OmniScan X3 flaw detector fully supports these methods, and its innovative total focusing method (TFM) imaging and software tools can ease your setup and analysis.

Olympus’ HTHA-optimized probe series and the OmniScan X3 flaw detector form a complete inspection solution for earlier HTHA detection:

Integrated DLA probe configuration
Live TFM envelope that removes signal oscillations
High-resolution TFM image (up to 1,024 × 1,024 points)
64-element TFM extended aperture

Probes

Optimal HTHA Detection with Multitechnology Probes

Cover More of the Weld and HAZ—Angle-Beam DLA Probe (A28)

High-resolution 10 MHz dual 32 small-element arrays
High beam-steering capability
Increased probability of detection (POD) offered by a longer focal range due to its patented pivoting housing
Series of wedges with roof angles offering passive focusing for depths from 4 mm to 95 mm (0.16 in. to 3.74 in.)

Fast HTHA Scanning—Zero-Degree DLA Probes (REX1)

10 MHz dual 64-element arrays
Beam width coverage up to 30 mm (1.18 in.)
Adjustable stabilization and carbide wear protection system fits to the surfaces of pipes as small as 4 inches (101.6 mm) OD
Integrated wedges covering thicknesses from 4 mm to 95 mm (0.16 in. to 3.74 in.)
Provides clear C-scan images when used with an encoder or scanner

Image of OmniScan X3 Phased Array Flaw Detector with TFM

Earlier HTHA Detection—TFM Probes Optimized for HTHA (A31/A32)

High frequencies with multiple smaller elements unleash the potential of TFM for HTHA detection

Specifications

Part Number/Description	Item Number	Frequency (MHz)	Element Configuration	# of Elements	Pitch (mm)	Active Aperture (mm)	Elevation (mm)	Roof Angle (deg)	Thickness Range (mm)
10DL32-9.6X5-A28	Q3301742	10	Dual 32	64	0.31	9.6	5	Set by wedge	Set by wedge
10DL64-32X5-1DEG-REX1-PR	Q3301737	10	Dual 64	128	0.5	32	5	1	30–95
10DL64-32X5-5DEG-REX1-PR	Q3301733	10	Dual 64	128	0.5	32	5	5	4–30
10L64-19.84X10-A31	Q3301607	10	Linear	64	0.31	19.84	10	N/A	3–60
10L64-32X10-A32	Q3300429	10	Linear	64	0.5	32	10	N/A	8–95
Fork to mount SA28 wedges on HSMT Scanners	Q7750200
Although all Dual Linear Array probes are manufactured with 10 MHz piezo-composite, the tested center frequency specification of the REX1 models shifts down to ~9.0 MHz because of attenuation occurring in the integrated wedge. These probes come standard with an OmniScan™ connector and a 2.5 m (8.2 ft) cable or can be specially fitted with other connectors and cable lengths. Important note: Using phased array probes in direct contact with a surface during inspection can lead to permanent damage. A wedge should always be used.

Wedges for the A28 Probe

The angle beam wedge series is optimized for weld volume and heat-affected zone inspection. The wedge angle is set to generate L-waves at a 65-degree nominal incident angle in steel. They feature a roof angle calculated for each AOD diameter.

SA28 wedges are avaliable in two focus depths to cover a wide range of thicknesses: