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Researchers at the Universitat Politècnica de València (UPV) have developed a non-destructive method that is easy to apply and capable of recognizing the general condition of all kind of materials in real time, which avoids possible security problems caused by the poor conditions of those materials.

This method, based on advanced techniques of signal processing, is able to analyze determinism of signals obtained by an ultrasonic inspection of the materials. Variation in this parameter shows possible damages to the material.

The results of this research come from a collaboration of researchers at the Institute for Telecommunications and Multimedia Applications (iTEAM) and the Concrete Science and Technology Institute (ICITECH) at UPV.

More precisely than usual techniques

With this technique, patented by the Universitat Politècnica de València, it is possible to quantify the material damages more precisely than with the usual techniques. It does so by characterizing the internal structure of the material in different frequency ranges, which guarantees stricter quality controls.

It is a more competitive method than techniques being used currently, such as measuring speed and attenuation. It has several benefits, including the assessment of overall damages to a material, and the fact that the measurement parameter is normalized between 0 and 1. This makes understanding the results easier, and allows performing an analysis of the frequency in proportion to the extent of the damage.

Multiple applications

It has multiple applications in fields such as aeronautics, naval and motor engineering for the continuous monitoring of the fuselage. In this industry, due to the high load that they endure, as well as fatigue cycles, abrupt temperature and pressure changes, it is necessary to periodically check the state of hulls, airplane wings, car bodyworks, etc.

In addition, in the field of civil engineering and construction, this new method can be used to detect damages in bridges, inspect pillars and resistant elements in buildings and assess defects in constructions affected by natural disasters, corrosion in marine environment, etc.

Other possible fields of application are the state control of the industrial venues, the inspection of energy transportation systems such as oil or gas pipelines, and even the quality control of 3D printing parts.

In fact, this invention contributes to the evolution of the non-destructive tests because it is independent of both the material that is inspected, since it avoids the need of having patterns, and the calibration of the unit.

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