Title :
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
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;
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
DOI :
10.1109/ETCS.2010.101
