Eddy Current Testing (ET)
Our eddy current testing (ET) services are accredited and performed by Eurofins Qualitech's certified test engineers and technicians in accordance with national and international norms and standards.
The principle of eddy current testing
The eddy current test methods (ET) are applied on the basis of magnetic induction, whereby an alternating magnetic field is generated by the sensor. Eddy currents are generated in the test object (e.g. Fe, Al, Cu) which generate an electromagnetic (secondary) field. There is no need for direct contact between the sensor and the part to be tested. If defects and inhomogeneities are detected, the eddy current field changes. These changes form the basis for the defined comparison errors during evaluation. With the eddy current testing method, the smallest damage to the surface can be detected. A major advantage of this method is its high inspection speed.
Applications:
The process is used both within the manufacturing process and for testing within plants on site.
- Detection of inhomogeneities (cracks, pores)
- Material properties of magnetically conductive components
- Process monitoring within the manufacturing process
- Testing in technical facilities on site
- Control of safety-relevant and function-critical components
Eddy current testing (ET) services
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Mechanised eddy current testing of pressure pipes with the use of electronic data processing
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Inspections of heat exchangers with our own eddy current probes
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Measurements of layer thickness, conductivity and hardness
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Examinations of gear rims used in cement mills with the use of eddy current array probes on contaminated components
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Contact-free examinations of weld seams directly dring the production process
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Inspections of tank floor inspections with synthetic resin coatings, etc.