Fracture toughness determination from load-line displacement of 3-point bend specimen using 3D digital image correlation method for CLF-1 steel

2021 ◽  
Vol 543 ◽  
pp. 152565
Author(s):  
Wangzi Zhang ◽  
Yao Xie ◽  
Lei Peng ◽  
Hongbin Liao ◽  
Yuanxi Wan
Keyword(s):  
Fracture Toughness ◽  
Digital Image Correlation ◽  
Digital Image ◽  
Correlation Method ◽  
Image Correlation ◽  
Bend Specimen ◽  
Load Line ◽  
3D Digital Image Correlation ◽  
Load Line Displacement ◽  
Point Bend

Study on Semi-Circular Bending Test Using Digital Image Correlation Method

2013 ◽  
Vol 438-439 ◽  
pp. 421-429
Author(s):  
Peng Fei Li ◽  
Jing Hui Liu
Keyword(s):  
Fracture Toughness ◽  
Digital Image Correlation ◽  
Digital Image ◽  
Fracture Resistance ◽  
Correlation Method ◽  
Asphalt Mixtures ◽  
Image Correlation ◽  
Bending Test ◽  
Single Specimen ◽  
Digital Image Correlation Method

Fracture toughnessJCis sensitive to the characteristic of the material itself, as an effective indicator to appreciate the fracture resistance of the asphalt mixtures, is adopted by more and more researchers. The Semi-Circular Bending Test (SCB) can evaluate the fracture resistance of asphalt mixtures with different kinds of molding means. But currently, the fracture toughnessJCis measured by multi specimens (at least two), the experimental consumption is high, the single specimen calculation formula didnt appear. Using Digital Image Correlation Method (DICM) can compute theJ-contour integral of a single specimen, compared with the results obtained from multi specimens, the repeatability is better, the accuracy is higher. Test and analytic results show that the DICM provide a new approach to study and investigate the fracture toughnessJC.

scholarly journals Strain determination of self-adhesive resin cement using 3D digital image correlation method

2018 ◽  
Vol 146 (7-8) ◽  
pp. 372-377 ◽  
Author(s):  
Aleksandra Mitrovic ◽  
Ivan Tanasic ◽  
Nenad Mitrovic ◽  
Milos Milosevic ◽  
Ljiljana Tihacek-Sojic ◽  
...  
Keyword(s):  
Digital Image Correlation ◽  
Digital Image ◽  
Correlation Method ◽  
Resin Cement ◽  
Image Correlation ◽  
Resin Cements ◽  
Adhesive Resin ◽  
Full Field ◽  
3D Digital Image Correlation ◽  
Dental Procedures

Introduction/Objective. In an attempt to simplify dental procedures, a new group of resin cements, self-adhesive resin cements (SARCs), have been introduced. Performance of SARCs can widely vary. One of the main reasons of adhesion failure is polymerization shrinkage. The aim of this study was to determine, evaluate, and measure strain field of self-adhesive dual cure resin cement during polymerization in self-cure mode using 3D digital image correlation (DIC) method. Methods. The self-adhesive Maxcem Elite (Kerr, Orange, CA, USA) cement was tested in five cylindrical samples (5 mm in diameter and 2 mm in thickness) prepared by filling plastic ring-type molds. Digital images were recorded immediately after sample preparation. Results. Non-uniform strain distribution was found in resin cement with higher strain values along the periphery (up to 15%) and lower strain values in central parts (around 4%) of each sample. Conclusion. It can be concluded that DIC is a powerful tool for full-field strain measurements in material characterization.

Digital image correlation method for measuring deformations of vinyl chloride-coated metal multilayer sheets

2019 ◽  
Vol 33 (05) ◽  
pp. 1950050 ◽  
Author(s):  
Dehai Zhang ◽  
Yanqin Li ◽  
Guizhong Xie ◽  
Duanqin Zhang ◽  
Shen Wu ◽  
...  
Keyword(s):  
Digital Image Correlation ◽  
Vinyl Chloride ◽  
Digital Image ◽  
Deep Drawing ◽  
Steel Plate ◽  
Three Dimensional ◽  
Correlation Method ◽  
Image Correlation ◽  
3D Digital Image Correlation ◽  
Coated Metal

A three-dimensional (3D) digital image correlation (DIC) method is presented for measuring the deformations of vinyl chloride-coated metal (VCM) multilayer sheets and their composites. The calculations and the principle of strain and deformation measurements using the DIC method are described. A VCM multilayer sheet consists of a substrate [steel plate cold commercial (SPCC) and steel plate cold elongation (SPCE)] and a clad (a VCM film). The corresponding deformations of VCM deep-drawing multilayer sheets (SPCE as a substrate and a VCM film as a clad), VCM nondeep-drawing multilayer sheets (SPCC as a substrate and a VCM film as a clad), nondeep-drawing substrates (SPCC), deep-drawing substrates (SPCE) and clads (VCM films) were captured along the x- and y-directions in uniaxial tension experiments and using the DIC method. The maximal measured strains along the x-direction for the VCM deep-drawing multilayer sheets, VCM nondeep-drawing multilayer sheets, nondeep-drawing substrates, deep-drawing substrates and clads were, respectively, 637.835%, 132.210%, 31.688.632%, 107.102%, and 118.937%. The maximal measured strains along the [Formula: see text]-direction were 739.028%, −11.174%, −9.678%, −13.273% and 12.120%, respectively. These data show that the mechanical properties of VCM multilayer sheets are better than those of their substrates and clads. The effectiveness and accuracy of the presented DIC method for VCM multilayer sheet measurements were confirmed in a series of experiments.

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