Notch-type damage influence on the frequency of the principal mode of the composite cantilever beam flexural vibrations

Derkach, O. L.; Zinkovskii, A. P.; Onyshchenko, Ye. О.; Savchenko, K. V.

doi:10.1016/j.prostr.2022.01.005

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Cited by 5 publications

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“…Consequently, developing scientifically based methods for diagnosing damage to composite structures during operation is essential. One such method is the analysis of changes in the natural frequency of vibrations [1] of damaged structures resulting from stiffness degradation. However, this method is less effective for small relative volumes of damage.…”

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confidence: 99%

Experimental Method of Investigating the Effect of Low-Velocity Impact on Damping Capacity of Multilayer Woven CFRP

Derkach,

Kobzar

2023

Materials Science and Surface Engineering

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The method of experimental study of the effect of local damage from a low-energy impact on the non-ideally elastic resistance of woven carbon fiber composites of a multilayer structure is considered. The amplitude-dependent logarithmic decrement of vibrations is taken as a characteristic of the non-ideal elasticity of the material. The presented experimental technique makes it possible to obtain experimental data on the dissipative properties of intact and damaged samples of materials under the conditions of their pure bending.

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confidence: 99%