Title :
The application of two-scale DSCM to measurement of shear strain field on free edge of notched thermoplastic laminate
Author :
Zhao, Guohua ; Shu, Qinglian ; Shen, Min ; Wang, Zhiyong
Author_Institution :
Sch. of Civil Eng. & Archit., Univ. of Jinan, Jinan, China
Abstract :
In this paper, two-scale DSCM (digital speckle correlation method) is applied to measurement of shear strain field on free edge of a notched APC-2/AS-4 laminate specimen with configuration of [±25°]s4. The result indicates: the shear strain has evident free edge effect at laminate interfaces, especially when lay-up angles of the two adjacent layers are opposite, the free edge effect at the interface is more severe. In addition, the existence of hole will reduce free edge effect.
Keywords :
laminates; light interferometry; optical variables measurement; speckle; strain measurement; APC-2/AS-4; digital speckle correlation method; free edge effect; notched thermoplastic laminate; shear strain field measurement; two scale DSCM; Correlation; Digital images; Finite element methods; Laminates; Lenses; Speckle; Strain; free edge effect; shear strain field; strain concentration; two-scale DSCM;
Conference_Titel :
Image and Signal Processing (CISP), 2011 4th International Congress on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-9304-3
DOI :
10.1109/CISP.2011.6100630
