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Vibration measurement of miniature component by high-speed image-plane digital holographic microscopy

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Vibration measurement of miniature component by high-speed image-plane digital holographic microscopy
นักวิจัย : Fu, Yu , Shi, Hongjian , Miao, Hong
คำค้น : DRNTU::Science::Physics::Optics and light
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2552
อ้างอิง : Fu, Y., Shi, H., & Miao, H. (2009). Vibration measurement of miniature component by high-speed image-plane digital holographic microscopy. Applied Optics, 48(11), 1990-1997. , 0003-6935 , http://hdl.handle.net/10220/6473 , http://dx.doi.org/10.1364/AO.48.001990
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Applied Optics
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

Measuring deformation of vibrating specimens whose dimensions are in the submillimeter range introduces a number of difficulties using laser interferometry. Normal interferometry is not suitable because of a phase ambiguity problem. In addition, the noise effect is much more serious in the measurement of small objects because a high-magnification lens is used. We present a method for full-field measurement of displacement, velocity, and acceleration of a vibrating miniature object based on image-plane digital holographic microscopy. A miniature cantilever beam is excited by a piezoelectric transducer stage with a sinusoidal configuration. A sequence of digital holograms is captured using a high-speed digital holographic microscope. Windowed Fourier analysis is applied in the spatial and spatiotemporal domains to extract the displacement, velocity and acceleration. The result shows that a combination of imageplane digital holographic microscopy and windowed Fourier analyses can be used to study vibration without encountering a phase ambiguity problem, and one can obtain instantaneous kinematic parameters on each point.

บรรณานุกรม :
Fu, Yu , Shi, Hongjian , Miao, Hong . (2552). Vibration measurement of miniature component by high-speed image-plane digital holographic microscopy.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Fu, Yu , Shi, Hongjian , Miao, Hong . 2552. "Vibration measurement of miniature component by high-speed image-plane digital holographic microscopy".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Fu, Yu , Shi, Hongjian , Miao, Hong . "Vibration measurement of miniature component by high-speed image-plane digital holographic microscopy."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2552. Print.
Fu, Yu , Shi, Hongjian , Miao, Hong . Vibration measurement of miniature component by high-speed image-plane digital holographic microscopy. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2552.