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Monitoring the Wall Mechanics During Stent Deployment in a Vessel

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A Study on the Development of the Stainless Steel Tube Bundle Structure Detecting System Using Ultrasonic Guided

Jeongnam Kim¹, Jiannan Zhang², Azamatjon Kakhramon Ugli Malikov²

¹Department of Reliability, Virtual Engineering Platform Research Division, Korea Institute of Machinery & Materials, 156 Gajeongbuk-ro, Yuseong-gu, Daejeon 34103, Republic of Korea.

Sensors (Basel, Switzerland)

|August 29, 2024

Summary

A new ultrasonic guided wave system effectively detects broken tubes in narrow stainless steel tube bundles. The system distinguishes damaged tubes by analyzing signal amplitude differences when filled with water versus air.

Keywords:

fast transform guided wave narrow gap nondestructive testing tube bundle

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Area of Science:

Materials Science
Non-destructive Testing
Mechanical Engineering

Background:

Stainless steel tube bundles are critical in heat exchangers.
Detecting broken tubes in narrow-spaced bundles presents significant challenges.
Current inspection methods may lack the precision for confined spaces.

Purpose of the Study:

To design and develop an ultrasonic guided wave system for detecting broken tubes in narrow stainless steel tube bundles.
To evaluate the system's effectiveness in differentiating between normal and damaged tubes.
To analyze the ultrasonic properties of stainless steel within these confined structures.

Main Methods:

Designed a specialized ultrasonic guided wave system with a 1 mm thick transducer.
The system was engineered to inspect tube intervals as narrow as 1.5 mm.
Tested the system on a damaged stainless steel specimen filled with water and compared it to a normal specimen filled with air.

Main Results:

The developed ultrasonic system successfully detected broken tubes in narrow stainless steel tube bundles.
A distinct difference in signal amplitude was observed between normal (air-filled) and damaged (water-filled) specimens.
Ultrasonic properties of stainless steel were analyzed using the developed system.

Conclusions:

The designed ultrasonic guided wave system is effective for detecting broken tubes in narrow-spaced stainless steel tube bundles.
The system's ability to differentiate damage based on signal amplitude variations is confirmed.
This technology is expected to enhance the reliability of breakage inspection in critical industrial applications like heat exchangers.