Acta Optica Sinica, Volume. 31, Issue 3, 312007(2011)
Optical 3D Deformation Measurement System and its Application to Investigation of Mechanical Behaviors of Micro-Structure
An optical measurement system for simultaneous 3D surface profile and deformation measurement of micro-components is presented by using microscopic fringe projection and digital-image correlation technique. In the system, sinusoidal fringes are projected on the surface of the specimen by a grating phase shifting projector. The deformed fringe patterns are captured by a high-resolution CCD camera and a microscope. The images are processed with phase-shifting technique. The intensity of the specimen′s background before and after deformation obtained by adding the phase-shifting images are processed by digital-image correlation technique. This system will be useful for optical measurement of micro-structure. As an application, the system is used to investigate the mechanical behaviors of molded pulp material in micro-zone during tension testing.
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Shi Hongjian, Ji Hongwei, He Xiaoyuan. Optical 3D Deformation Measurement System and its Application to Investigation of Mechanical Behaviors of Micro-Structure[J]. Acta Optica Sinica, 2011, 31(3): 312007
Category: Instrumentation, Measurement and Metrology
Received: Jun. 7, 2010
Accepted: --
Published Online: Feb. 28, 2011
The Author Email: Hongjian Shi (shj_seu@yahoo.com.cn)