Application of Digital Speckle Correlation Method Combined with Edge Tracking in Sheet Tensile Test

Author

Guofeng, Zhou ; Xiaoxing, Li

Author_Institution

Dept. of Aircraft Manuf. Eng., Beihang Univ., Beijing, China

Volume

2

fYear

2010

fDate

6-7 March 2010

Firstpage

239

Lastpage

242

Abstract

A novel detection method based on digital speckle correlation is proposed for the tensile test of sheet metal. Standardized covariance correlation formula is adapted according to the specimen´s tensile deformation. Also a new calibration method employing specimen as the calibrate object is presented combination with edge detection techniques. Purposing to improve the accuracy and rates of correlation search, the edge tracking measure results are adopted as the initial value of correlation search. And the feasibility of this set of method is proved by silica gel tensile tests.

Keywords

calibration; correlation methods; deformation; production engineering computing; sheet metal processing; speckle; tensile testing; tracking; calibration method; digital speckle correlation method; edge detection; edge tracking; sheet metal; sheet tensile test; silica gel tensile tests; standardized covariance correlation formula; tensile deformation; Adaptive optics; Aircraft manufacture; Calibration; Correlation; Holographic optical components; Holography; Materials testing; Speckle; Tensile strain; Tensile stress; digital speckle correlation method; edge tracking; system calibrate; tensile test;

fLanguage

English

Publisher

ieee

Conference_Titel

Education Technology and Computer Science (ETCS), 2010 Second International Workshop on

Conference_Location

Wuhan

Print_ISBN

978-1-4244-6388-6

Electronic_ISBN

978-1-4244-6389-3

Type

conf

DOI

10.1109/ETCS.2010.101

Filename

5460003