Phased Array Technology (PAUT): PAUT is a very useful tool for evaluation of HIC damage, either using a 0° Linear Scan Technique or the more familiar Sectorial Scan (-30° to + 30°). Images for both of these techniques are shown below.

detailed PAUT inspection with combined angular and straight beams successfully revealed that the specific clusters were not just typical lamination inside the metal but an early stage of HIC damage that ranged from blisters to in-plane clusters of lamination-type clusters

Microcracks brought on by HIC that would not be visible to the unaided eye or identifiable using conventional NDT techniques can be found utilizing PAUT. Early HIC detection can lower maintenance costs, minimize downtime, and assist prevent catastrophic failures.

use of phased array ultrasonic testing (PAUT) could be a solution to avoid missed testing and misjudgment. This study introduces technical requirements, testing plan, testing process and testing

Ultrasonic crack detection and sizing is an essential tool in determining the asset integrity of pressure vessels and piping. Conventional UT shear wave methods have proved to be time consuming, requiring high skill levels and frequently resulting in unreliable and inconsistent data.

2022年6月28日 · The article is devoted to the investigation of ultrasonic inspection techniques suitable for detecting hydrogen-induced cracking (HIC) and a high-temperature hydrogen attack (HTHA), which are of great importance in petrochemical and refinery industries.

Hydrogen Induced Cracking (HIC), Step Wise Cracking (SWC), Stress Oriented Hydrogen Induced Cracking (SOHIC) are different morphologies of HDM. Failure in Detection, sizing and monitoring of it can lead to catastrophic failures. Ultrasonic inspection is best suited, as HIC forms planer reflectors to normal beam.

PAUT enables inspection of thin walled piping by providing semi-automated data collection. The low-profile scanner is specifically designed for use on small bore piping where minimal clearance is a limitation. Left: scan plan of flange Inspection. Right: Crevice corrosion detected with PAUT which was later repaired

2020年5月18日 · 石化設備長年操作後，若設備內部有氫氣存在，設備胴體壁板容易發生氫引裂現象，若以超音波探傷方式會發現胴體壁厚方向出現多支回波訊號，但無法判定這些離散裂紋訊號是否有連成一條巨觀裂紋，若改以paut進行高解析度掃描，便能協助判定壁厚內的hic裂紋 ...

Phased array ultrasonic testing (PAUT) is an ultrasonic non-destructive testing (NDT) technique that uses the principles of wave interference and technology to inspect different materials for defects or damage during fabrication or while in service.