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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.
Keywords:
rectangular plate, vibration, diagnostics, experimental research, cracks
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