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Экспериментальное исследование развития усталостной трещины…

Инженерный журнал: наука и инновации

# 10·2017 9

Experimental research of fatigue crack development

in a rectangular plate

© L.A. Andrienko, K.I. Brykin

Bauman Moscow State Technical University, Moscow, 105005, Russia

The article presents the results of the experimental study of vibration parameters of rec-

tangular plates with fatigue cracks loaded in their plane by a cyclically changing bend-

ing moment. The description of the original experimental stand where a cyclic load is

created by means of a rotating disc installed with an eccentricity is given. Roller guides

are installed between the disc and the plate to prevent wear of the plate during the load-

ing. A high correlation of vibration signals obtained from sensors mounted directly on

the plate near a crack and on the basis of the experimental stand is shown. It is conclud-

ed that for the further analysis of a technical condition of a plate it is possible to use a

signal from the gauge mounted outside a plate. The results of the study can be useful for

diagnosing plates if the crack in them cannot be detected visually due to the complexity of

access to it.


rectangular plate, vibration, diagnostics, experimental research, cracks



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