Investigation of measurement of large amplitude vibrations by using the method of reflection moir
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This paper is a full article on the basis of the material presented in a conference paper. In agricultural devices vibrations of high frequency take place. Their precise measurement is an important engineering problem. Time averaged moiré methods are used for this purpose. Reflection moiré is applicable for the measurement of bending vibrations of structures of plate or beam type. Conventional applications are for small amplitude vibrations and interpretation of results is performed in the usual way. But interpretation of results is more complicated when the amplitudes of vibrations are large. Investigation of time averaged reflection moiré measurements of large amplitude vibrations of a simplified model problem is performed in this paper. For this purpose, a special simplified one-dimensional numerical model is developed and the possibilities of application of this method of measurement of large amplitude vibrations are investigated.
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