In-plane vibration detection using sampling moiré method

Abstract Various methods have been proposed to measure vibration frequency. However, mechanical systems are not efficient as they be attached the object of interest. So, measurements precise when a new mass is introduced surface. Besides, obtaining power and phase distribution on whole surface vibrating possible through using accelerometers or other vibrometers. Out-of-plane detection was previously by one authors, pitch analysis method. In this paper, novel accurate in-plane technique sampling moiré method proposed. This paper first published report an industrial scale size object. Since noncontact deformation deformed body method, in study applied tuning fork high-speed camera. shortly describes principle compares experimental frequency results with those obtained laser displacement meter. Moreover, for time, graphs fork, two different modes, obtained. technology will useful investigation any movable scale.