To reduce the number of crashes that occur due to defects in materials intend specialists of the National research technological University “MISIS”. Here developed a unique domestic appliance laser-ultrasonic diagnostics of materials, capable of detecting minute internal defects of the wing or hull of the aircraft with an accuracy of hundredths of a millimeter.
photo: Gennady Cherkasov
Due to mechanical and thermal loads on the most crucial power elements of construction in the parts of the aircraft can occur in the smallest pores and other defects. Over time they turned into large cracks, every airliner after flying checked: with ultrasonic control experts are trying to discern future damages in its infancy.
If early ULTRASOUND devices can “see” cracks of size not less than 1 millimeter, now, thanks to new technology developed by a research team led by Professor Alexander Karabutov, professionals will be able to find the damage in the material plane size of 50 microns (!).
To increase the spatial resolution of conventional ULTRASOUND control managed through the use of a laser that generates pulses with a very wide set of frequencies. This achieves the greatest depth sensing (up to 40 mm), and due to the ultra-wideband pazopanib professionals achieve greater sensitivity to register the return echo signals.
A new method was possible to detect such defect, as the separation between each successive layer of the composite material. The technology is already tested to control carbon torsion box of the wing (the force of the wing that during flight the main burden falls new Russian short and medium-haul passenger airliner MS-21. The first batch of laser-ultrasonic flaw detectors have already been launched in limited production and ready for use in the domestic aerospace industry.