Actual methods of full-scale metal-composite aircraft structures static testing with the use of information systems

Abstract

Annotation Strength testing of aircraft structures made of polymer composite materials requires improving methods and procedures for conducting experimental research. The paper presents a computational and experimental approach applied in the laboratory of static strength tests of FSUE “TsAGI”. The effectiveness of this approach is demonstrated on the example of testing the structure of medium-range aircraft. Before the tests, a computational model was created, based on which critical strength zones were determined. Additional strain gauges were installed in these areas, which allowed conducting thorough monitoring of the stress-strain state. The use of specialized software “Tensometry visualization module”, developed at FSUE “TsAGI”, made it possible to analyse the readings of ∼10,000 strain gages during testing in real-time, which significantly increased the information value of the experiment and reduced the risks of unintentional destruction of a full-scale specimen. Based on the results of the experiment, the calculation model was validated.