Dynamic polarimetric imaging measurement of flexible flapping wing

• Main Authors: Di-Sheng Jhrng, 鄭迪升
• Other Authors: Cheng-Yang Liu
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/17933811293505023586

碩士 === 淡江大學 === 機械與機電工程學系碩士班 === 101 === This study used of polarized light scattering measurement techniques to measure the variation situations for the elastic membrane flapping wing mechanism. The optical system uses a highly collimated green laser of light source. Light beam passes through the aperture, a polarizer and a beam expander for collimation. The detector in system is a high-speed camera. This study measure the elastic flapping mechanism at different angles. The polarization images is calculated by using polarized optical image(POL) equation. The wing flapping mechanism can be improved by polarization images. This study uses two types of light sources and compares with laser and white light source. In measurement, we change the incident angle and reflection angle for image detection. The incident angle and receiver angle is controlled by the motorized stages. The wing membrane changing images, wing membrane, flapping frequency ,wings changing angle and flow field have been measured. This study can be used for static measurements and also be applied to dynamic measurements. The optical measurement is a wide range of applications of the optical measurement system.