Out-of plane displacement reconstruction of Carrier-wave Electronic Speckle Pattern Interferometry based on sub-pixel and Fourier transform

2011 ◽  
Author(s):  
Lin Zhenheng ◽  
Xie Haihe ◽  
Dai Jiao ◽  
Sun Cunmiao ◽  
Lu Xizhao
Keyword(s):  
Fourier Transform ◽  
Speckle Pattern ◽  
Electronic Speckle Pattern Interferometry ◽  
Carrier Wave ◽  
Out Of Plane ◽  
Displacement Reconstruction ◽  
Plane Displacement

Electronic Speckle Pattern Interferometry Applied to the Displacement Measurement of Sandwich Plates with Single ‘Fully Potted’ Insert

2004 ◽  
Vol 20 (4) ◽  
pp. 273-276 ◽  
Author(s):  
S. J. Huang ◽  
H. L. Lin
Keyword(s):  
Speckle Pattern ◽  
Fem Analysis ◽  
Electronic Speckle Pattern Interferometry ◽  
Sandwich Plates ◽  
Destructive Testing ◽  
Displacement Fields ◽  
Full Field ◽  
Out Of Plane ◽  
Plane Displacement ◽  
Non Destructive

AbstractThe construction and operation of electronic speckle pattern interferometer (ESPI) applied to single-inserted sandwich plates have been earliest presented in this paper. Proposed ESPI has advantages of full-field and non-destructive testing, which can measures microscopic out-of-plane displacement in the elastic region without wasting specimen. For validation purpose, the finite element method (FEM) analysis was conducted. By comparing the results of ESPI and FEM displacement fields around the inserts that a convincing agreement is revealed. The effect of potting material diameter on the displacement of single-inserted sandwich plates was obtained by the ESPI and FEM.

Out-of-plane displacement measurement by electronic speckle pattern interferometry in presence of large in-plane displacement

2002 ◽  
Vol 208 (1-3) ◽  
pp. 17-24 ◽  
Author(s):  
R.A Martı́nez-Celorio ◽  
B Barrientos ◽  
Francisco J Sanchez-Marı́n ◽  
Luis Martı́ López ◽  
J.A Rayas
Keyword(s):  
Speckle Pattern ◽  
Displacement Measurement ◽  
Electronic Speckle Pattern Interferometry ◽  
Out Of Plane ◽  
Plane Displacement

Deformation in Impacted Stitched Composite Plates Subjected to Compressive Load

2011 ◽  
Vol 393-395 ◽  
pp. 36-39
Author(s):  
Jiang Tao Ruan ◽  
Shi Bin Wang ◽  
Jing Wei Tong ◽  
Min Shen ◽  
Francesco Aymerich ◽  
...  
Keyword(s):  
Speckle Pattern ◽  
Compressive Load ◽  
Composite Plates ◽  
Low Velocity Impact ◽  
Electronic Speckle Pattern Interferometry ◽  
Low Velocity ◽  
Out Of Plane ◽  
Compressive Loads ◽  
Graphite Fibre ◽  
Plane Displacement

The study on deformation in impact-damaged graphite-fibre/epoxy stitched composite plates subjected to compressive load is presented. A delaminated cross-ply laminate [03/903]S obtained in low-velocity impact test has been examined using a self-designed anti-buckling device in compressive experiment. The out-of-plane displacement field of the specimen has been measured with an optical whole-filed measurement technique, which is carrier electronic speckle pattern interferometry (carrier-ESPI). Finite element (FE) simulation is also carried out to predict the deformation. The effect of the stitching line on compressive deformation is discussed for various stitched laminates. Finally, the numerical results are compared with experimental measurement deformations under different compressive loads.

To Measure Mechanical Properties along Thickness in FSW Welded Zone by Applied ESPI Technology

2014 ◽  
Vol 626 ◽  
pp. 1-9
Author(s):  
Thai Ping Chen ◽  
Chi Hui Chien ◽  
Tsu Lin Tsay ◽  
Yen Ming Tzeng ◽  
Hsu Hsuan Cheng
Keyword(s):  
Aluminum Alloys ◽  
Young’S Modulus ◽  
Young's Modulus ◽  
Speckle Pattern ◽  
Electronic Speckle Pattern Interferometry ◽  
Concentrated Load ◽  
Friction Stir ◽  
Dissimilar Aluminum Alloys ◽  
Out Of Plane ◽  
Plane Displacement

The purposes of this paper are to weld dissimilar aluminum alloys joints, AA1050 and AA6061, and to find Young’s modulus on the welded zone along the thickness. Dissimilar aluminum alloys plates are friction stir welded in the butt configuration by using an adapted milling machine. Young’s modulus of components is found out by applied a reverse method and the out-of-plane displacement is measured by Electronic Speckle Pattern Interferometry. The out-of-plane displacement of the welded cantilever beam is subjected to a concentrated load. The results reveal that Young’s modulus in the welded zone is the deeper the smaller.

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