Strain and mechanical properties of the VCM multilayer sheet and their composites using the digital speckle correlation method

被引：11

作者：

Zhang, Dehai ^{[1
]}

Xie, Guizhong ^{[1
,2
]}

Li, Yanqin ^{[1
,2
]}

Liu, Jianxiu ^{[1
,2
]}

机构：

[1] Zhengzhou Univ Light Ind, Mech & Elect Engn Inst, Zhengzhou 450002, Peoples R China

[2] Xi An Jiao Tong Univ, State Key Lab Mfg Syst Engn, Xian 710049, Peoples R China

来源：

APPLIED OPTICS | 2015年 / 54卷 / 25期

关键词：

IMAGE CORRELATION METHOD; SUBPIXEL DISPLACEMENT; COMPRESSIVE FAILURE; ERROR ASSESSMENT; UNCERTAINTY; FIELDS; STEEL;

D O I：

10.1364/AO.54.007534

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The digital speckle correlation method (DSCM) is introduced to solve the challenging problems in the related geometric measurement. Theoretical calculations of strain are deduced using the DSCM. Corresponding strains along x and y directions are obtained from uniaxial tension experiments and digital speckle measurements, using the VCM nondeep drawing multilayer sheet, the VCM deep-drawing multilayer sheet, clad films, nondeep drawing substrate, and deep-drawing substrate sheet as the targeted experimental objects. The results show that the maximum strains along the x direction of the VCM nondeep drawing multilayer sheet, the VCM deep-drawing multilayer sheet, clad film, nondeep drawing substrate, and deep-drawing substrate sheet are 68.473%, 48.632%, 91.632%, 50.784% and 40.068%, respectively, while the maximum strains along the y direction are -2.657%, -15.381%, 2.826%, -9.780% and -7.783%, respectively. The mechanical properties of the VCM multilayer sheet are between those of the substrate and clad film, while mechanical properties of the VCM deep-drawing multilayer sheet are superior to those of the VCM nondeep drawing multi-layer sheet. (C) 2015 Optical Society of America

引用

页码：7534 / 7541

页数：8

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