NM01SA31N55SIHC
The ULSO SA31-N55S Phased Array Wedge IHC is a meticulously engineered accessory designed to facilitate precise angle beam ultrasonic inspections using phased array probes. This wedge is specifically configured for Normal Scan applications, meaning the phased array probe is typically oriented perpendicular to the scanning direction along the length of the wedge.
The designation N55S clearly indicates the acoustic performance of the wedge when coupled with a suitable phased array probe on a steel test material. It signifies that the ultrasonic beam will be refracted at an angle of 55 degrees and will propagate as a Shear Wave (S). This specific angle and wave mode are commonly employed in non-destructive testing (NDT) for detecting and characterizing flaws that are oriented at or near a perpendicular angle to the sound path, such as cracks, lack of fusion in welds, and other critical discontinuities.
The suffix IHC denotes the integration of three key features that enhance the wedge's practicality and performance in various inspection scenarios:
Irrigation (I): The wedge is equipped with internal channels or ports that allow for the controlled introduction of ultrasonic couplant, typically water, directly to the critical interfaces between the phased array probe and the wedge, and between the wedge and the surface of the material under inspection. This integrated irrigation system ensures consistent and optimal acoustic coupling, which is paramount for reliable transmission and reception of ultrasonic signals, especially during prolonged automated scans or on uneven surfaces.
Holes (H): The wedge incorporates precisely located mounting holes. These holes are designed to enable secure and stable attachment of the wedge and the associated phased array probe to a variety of manual or automated ultrasonic scanning systems and indexing fixtures. This feature facilitates repeatable and controlled scanning patterns, contributing to the efficiency and accuracy of the inspection process.
Carbides (C): The contact surface of the wedge, which slides against the material being inspected, is enhanced with embedded carbide wear pins or a durable carbide facing. Carbide is an exceptionally hard and abrasion-resistant material. The inclusion of carbides significantly increases the wear resistance of the wedge, particularly when used on rough, scaled, or abrasive surfaces. This prolongs the lifespan of the wedge, maintains consistent acoustic coupling characteristics over time, and reduces the need for frequent replacements.
While the SA31 prefix likely indicates compatibility with a specific series of ULSO phased array probes (potentially the A31 series or probes with a similar footprint), the combination of the N55S acoustic characteristics and the IHC features makes this wedge a valuable tool for a range of angle beam phased array inspections on steel, particularly in applications where consistent coupling, secure mounting, and durability are critical.