Welcome to the Nondestructive Testing Department research information page.

Our quality control standards are high. Our personnel are among the best in domain.

Below is a short list of our activities:

EDDY CURRENT TESTING

Testing of cylindrical products

1. Analytical modeling of the operation of the inside eddy-current transducer with rotating magnetic field placed in air and introduced inside a pipe considered as a multilayer conducting cylinder.

 2. Calculation of the fields scattered by material discontinuities located at different areas of the multilayer cylindrical medium.

 3. Solving the forward problem, that is calculating the response of the transducer with rotating magnetic field to different typical material discontinuities, including discontinuities that can simulate corrosion; theoretical optimization of the operation of the transducer with rotating magnetic field.

 4. Designing and  executing an inside transducer with rotating magnetic field; realization of a model of control equipment; realization of typical discontinuities; validation of the theoretical model.

 5. A study of the possibilities to extend the area of utilization of this control method to the inspection of fluid carrying pipes, making use of laboratory experiments and simulation.

 6. Solving the inverse problem.

Testing of composite materials

• The developing and functionality demonstration of eddy currents sensors array dedicate to

- carbon-epoxy composite materials inspection to visualize the delaminations dues to impacts with energy  smaller than 1.5J and the zones with thermal damages of the matrix

- metallic and composite metallic materials  to detect cracks networks due to f

• The developing of the algorithms and signals processing codes which assure

- effective array pattern construction, the area being electronically scanned

- super-resolution approach for emphasizing multiples discontinuities, imposing a spatial resolution better than 100m

- irregularly multiples discontinuities shape reconstruction

ULTRASONIC TESTING

- Elaboration of ultrasound scattering physical models on diverse types of discontinuities

- Development of specific methods signal treatment and post-processing signal using the artificial intelligence methods.

- Elaboration of ultrasound scattering physical models wich will prediction the transducer response on such discontinuities as: cracks, blistering, inclusion, etc., that to point out in nuclear power station testing.

- Development of specific methods to ultrasound signal treatment with FFT, digital filtering, neuro-fuzzy networks.

Development of the algorithms for defects localization and automatic- clasification of defects.

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