Verifying Axial Crack Detection Capabilities

Verifying Axial Crack Detection Capabilities

  • avatarDexon Technology
04 February 2026

Dexon is currently preparing one of our Ultrasonic Crack Detection (UT-CD) tools for third-party qualification.  

The objective: to demonstrate the tool’s capability to detect, size, and reliably report a wide range of axial crack-like indications in carbon steel pipelines under realistic operating conditions.
Test Setup and Methodology 

All testing was conducted at Dexon’s 7-acre ILI test yard in Rayong, Thailand.  

The UT-CD system under evaluation was an 8-inch, high-resolution ultrasonic tool configured for crack detection and sizing.  

The test environment included fully pressurized pipelines incorporating minor elevation changes, 3D bends, and test spools with axial notches. 

The test sequence involved multiple runs to evaluate detection and sizing probability, signal response consistency, and tool maneuverability.
Data Evaluation and Results 

Defect detection, axial position, and sizing performance were evaluated using Dexon’s proprietary software and verified against measured values.  

Preliminary results demonstrate that the UT-CD tool meets or exceeds the criteria.
Conclusion 

This campaign represents a critical step in Dexon’s roadmap toward third-party certification of its UT-CD fleet.  

By using a full-scale test yard, manufacturing reproducible defects, and conducting repeatable validation, Dexon ensures its tools not only meet but exceed industry expectations.