In-plane deformation gradient measurement using common-path spatial phase shift shearography

Helia Hooshmand-Ziafi; Khosrow Hassani; Masoomeh Dashtdar

doi:10.1117/12.2525234

21 June 2019 In-plane deformation gradient measurement using common-path spatial phase shift shearography

Helia Hooshmand-Ziafi, Khosrow Hassani, Masoomeh Dashtdar

Proceedings Volume 11060, Optical Methods for Inspection, Characterization, and Imaging of Biomaterials IV; 1106008 (2019) https://doi.org/10.1117/12.2525234
Event: SPIE Optical Metrology, 2019, Munich, Germany

Abstract

The spatial phase shifting digital speckle pattern shearing interferometry (DSPSI) system has been widely used to determine map of deformation. In this paper a common-path DSPSI setup is introduced for in-plane strain measurement under dynamic loading, using two laser beams with different wavelengths that symmetrically illuminate the test object, and a single detector. The simplicity, stability and efficiency of the arrangement are provided using a glass plate as a shearing device which is capable of tuning the sensitivity continuously. The phase is recovered from a single frame by the Fourier method. In this setup the spatial carrier frequencies can be adjusted independent of the lateral shearing amount. Ultimately, the desired field of view can easily be achieved by simple imaging optics. To validate the feasibility and the flexibility of our technique, the proposed setup is used to evaluate the strain map of an aluminum plate which is deformed under dynamic stress in its plane. Experimental results are presented and discussed.

Conference Presentation

Citation Download Citation

Helia Hooshmand-Ziafi, Khosrow Hassani, and Masoomeh Dashtdar "In-plane deformation gradient measurement using common-path spatial phase shift shearography", Proc. SPIE 11060, Optical Methods for Inspection, Characterization, and Imaging of Biomaterials IV, 1106008 (21 June 2019); https://doi.org/10.1117/12.2525234

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available