2019
DOI: 10.24425/amm.2019.129493
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Application of Two Advanced Vision Methods Based on Structural and Surface Analyses to Detect Defects in the Erichsen Cupping Test

C. Jasiński,
S. Świłło,
A. Kocańda

Abstract: Due to the wide range of various sheet metal grades and the need to verify the material properties, there are numerous methods to determine the material formability. One of them, that allows quick determination of sheet metal formability, is the Erichsen cupping test described in the ISO 20482: 2003 standard. In the presented work, the results of formability assessment for DC04 deep drawing sheet metal were obtained by means of the traditionally carried out Erichsen cupping test and compared with the results o… Show more

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“…After numerical analysis using autocorrelation, complete characteristic scatter points on the laser speckle activity graph can be plotted. Therefore, it is possible to indicate the moment of cracking and fracture [17]. Jasinski's method involved the analysis of images of the speckle effect caused by the emission of coherent light onto the surface of the sheet metal being examined.…”
Section: Literature Reviewmentioning
confidence: 99%
“…After numerical analysis using autocorrelation, complete characteristic scatter points on the laser speckle activity graph can be plotted. Therefore, it is possible to indicate the moment of cracking and fracture [17]. Jasinski's method involved the analysis of images of the speckle effect caused by the emission of coherent light onto the surface of the sheet metal being examined.…”
Section: Literature Reviewmentioning
confidence: 99%