© РИА Томск. Сергей Беркман
TOMSK, Feb 17 – RIA Tomsk. Scientists of Tomsk State University (TSU) have found a new, more reliable and simpler way to search for
microdamages in aircraft windows than are used now – digital particle
holography; this method allows finding the exact location of microcracks
without removing the window from the aircraft, the press service of the
university said on Wednesday.
Flight safety largely depends on the state of the
aircraft glazing. The reason for the decrease in glass strength is the
appearance of the smallest microcracks. Now, for inspection, glass is either
examined with magnifiers and prisms directly on board, but with this method of
checking microcracks cannot be noticed, or the glass is pulled out of the
structure in order to later examine it with a laser.
"Digital holography makes it possible to
determine the transverse and longitudinal dimensions of each glazing surface
defect separately with a predetermined accuracy. This makes it possible,
without removing the glass from the aircraft, to identify areas with cracks,
the dimensions of which exceed the tolerances for safe operation", – research engineer of the TSU Faculty of Radiophysics
Nikolay Yudin is quoted in the message.
It is specified that at this stage there is a search
for improving the accuracy of the method and its most ergonomic implementation.
Implementation this technology in the process of preflight preparation of
aircraft requires the development of an appropriate camera design and software
with an intuitive interface.
"Now digital holographic cameras are industrially
produced by the Laboratory of Optical Crystals company for crystallography and
monitoring of marine plankton. These cameras can also be used for solving
problems of flaw detection of aircraft glazing", – is said in the report.
The project is implemented in partnership with
colleagues from the Research Center of the Central Scientific Research
Institute of the Air Force of the Ministry of Defense of the Russian
Federation, the Military Training and Scientific Center of the Air Force
"Air Force Academy" named after Nikolai Zhukovsky and Yuri Gagarin
(Voronezh), OOO Laboratory of Optical Crystals, "Laboratory of Optical
Crystals" LLC, IAO SB RAS, (Tomsk).