Material formability is a very important aspect in the automotive stamping, which must be tested for the success of manufacturing. One of the most important sheet metal formability parameters for the stamping is the edge tear-ability. In this paper, a novel test method has been present to test the aluminum sheet edge tear-ability with 3D digital image correlation (DIC) system. The newly developed test specimen and fixture design are also presented. In order to capture the edge deformation and strain, sample's edge surface has been sprayed with artificial speckle. A standard MTS tensile machine was used to record the tearing load and displacement. Through the data processing and evaluation of sequence image, testing results are found valid and reliable. The results show that the 3D DIC system with double CCD can effectively carry out sheet edge tear deformation. The edge tearing test method is found to be a simple, reliable, high precision, and able to provide useful results.
The Research on Edge Tearing with Digital Image Correlation
Sae Technical Papers
SAE 2015 World Congress & Exhibition ; 2015
2015-04-14
Aufsatz (Konferenz)
Englisch
Measurement of Aluminum Edge Stretching Limit Using 3D Digital Image Correlation
SAE Technical Papers | 2015
|Edge Extraction Based Image Correlation
SPIE | 1980
|Analysis of ductile tearing of pipeline-steel in single edge notch tension specimens
Tema Archiv | 2003
|Tearing of Thin Sheets with Wrinkling
AIAA | 2011
|Tearing of Thin Sheets with Wrinkling
British Library Conference Proceedings | 2011
|