%0 Journal Article
%T An evaluation technique for high
%A Yun Young Kim
%J Journal of Sandwich Structures & Materials
%@ 1530-7972
%D 2019
%R 10.1177/1099636217708146
%X A method was developed to measure the first- and second-order vibration modes in a sandwich microcantilever beam oscillating in the megahertz frequency regime in the present study. Taking advantage of the ultrasonic frequency, a test platform was developed to induce free vibration of the microcantilever using a high-power radio frequency pulser that transmits tone burst signals to a contact transducer, and the resonant frequencies of the microcantilever were measured using a laser-optic interferometer. Results show that the microcantilever¡¯s vibration above 8£¿MHz can be successfully detected, and its vibration modes were identified through a theoretical study based on the Euler¨CBernoulli beam theory and a numerical analysis using the finite element method. The present study proposes a facile and effective way to actuate a high-speed sandwich microcantilever and detect its high-frequency response so that the technique can be employed to study the characteristics of micro- and nanomechanical sandwich structures and their properties
%K Sandwich microcantilever beam
%K natural frequency
%K optical measurement
%K modal analysis
%K beam theory
%U https://journals.sagepub.com/doi/full/10.1177/1099636217708146