Title: Method for measuring object deformation field by using moire interference carrier frequency modulation technology
Application Number: 200610070348 Application Date: 2006.11.28
Publication Number: 1971208 Publication Date: 2007.05.30
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G01B11/16;G01B11/00;G01B9/02;G01D5/26;G01D5/38
Applicant(s) Name: Shandong Normal University Address:
Inventor(s) Name: Sun Ping
Attorney & Agent: wangshu gang
Abstract:
    The invention supplies a method of measuring deformation field of body with moire intervention carrier modulation. The method is in moire intervention, based on the proportional relationship between angle variations of light and spatial frequency of carrier fringes, the carrier can be introduced by controlling the deflection of reflector to change the light angle of incidence grid; the space modulation of interference fringe can be realized; the phase field of deformation of body can be demodulated by Fourier method, so the deformation field of body can be obtained. The invention makes use of the proportional relationship between angle variations of light and carrier frequency and realizes the space modulation of interference fringe conveniently by deflecting reflector to change the light angle of incidence grid, it is easy to accomplish, and the requirement to measuring environment is low.
Time: 8
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