博文
| Phased Array and TOFD Inspection on Storage Tank | |
| Volume: 2000 m3 | |
| Thickness: 50mm | |
| Inspect position: 300mm away from the T-shaped part. | |
 |
| Purpose of This Application |
| Adopt Phased Array and TOFD technology to verify detection rate and accuracy of ultrasonic testing. | |
| System Introduction |
| Phased Array and TOFD flaw detector SUPOR (32:128) and single channel TOFD crawler | |
| Phased Array probes and TOFD probes | |
| Coupling: Kettle spray method is adopted to ensure good coupling between probe and tank surface. | |
 |
 |
| TOFD Inspection on Storage Tank |
 |
| TOFD inspection with 1-ch TOFD crawler |
| SuporUp Software Analysis for TOFD inspection |
 |
| The length of the strip-type defect is 35mm. | |
| The defect is determined as slag by B-scan image. | |
| Note: The sensitivity of lateral wave is a little low since the coupling is not good enough (both sides of welding should be polished). | |
| PA Inspection on Storage Tank |
 |
| Time-base method is adopted in Phased Array inspection. |
| SuporUp Software Analysis for PAUT inspection |
 |
| The length of the strip-type defect is 35mm. | |
| The defect is determined as slag by A-scan image. | |
| Note: As the encoder scanning is not adopted in this phased array inspection, the horizontal length can not reflect the true defect length. | |
| Conclusion |
| Phased Array and TOFD inspection on storage tank have these benefits: flexible and convenient operation, high detection sensitivity, intuitive result, real-time display, all defects can be detected by one scanning. | |
