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Yongjian - What is On-line Eddy Current Inspection?

April 10, 2024

Online eddy current inspection is a non-destructive testing technique used to examine the surface of electrically conductive materials for defects or irregularities. 


Here are some key details about online eddy current inspection:


Principle: 

Eddy current inspection relies on electromagnetic induction. 

A coil carrying an alternating current is placed near the surface of the material being tested. 

The alternating current creates eddy currents in the material, and changes in the eddy currents are detected and analyzed to identify defects.



Applications: 

This technique is commonly used in industries such as aerospace, automotive, and manufacturing to inspect components like pipes, tubes, and aircraft parts for cracks, corrosion, and other flaws. 🚗


Online Inspection: 

In online eddy current inspection, equipment is often integrated into production lines or operating systems to perform real-time inspections of materials as they are being processed or used. 

This allows for immediate feedback and quality control during manufacturing processes. 


Advantages: 

Some advantages of online eddy current inspection include its non-destructive nature, speed, and ability to detect surface and some subsurface defects without the need for disassembly or interruption of operations.


Limitations: 

However, online eddy current inspection may have limitations in detecting defects deep within a material or irregularities in highly complex or irregularly shaped components.


Overall, online eddy current inspection is a valuable tool for ensuring the quality and integrity of materials in various industries, offering fast and reliable defect detection capabilities. 🔍


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