Extraction of Region Contour in SEM Fractographs

In the domain of material science, quantitative fractography is an analytical tool to study the characteristics of a fracture surface. The inception of Scanning Electron Microscope (SEM) has motivated the researchers toward the quantitative analysis of such surface. Due to fracture, new surfaces are evolved and voids are also formed. Extraction of such regions (surface/void) from SEM fractographs is of immense importance as it enables the subsequent characterization of the surfaces and the study of void distribution. To carry out the analysis, image processing tools are being applied by the researchers mostly on a case to case basis. Thus, well founded image processing technique to cater the specific need is still lacking. In this work, we have proposed a scheme to determine the closed contour of the regions denoting the surface or void. The proposed methodology relies on the systematic combination of basic techniques of image processing to accomplish the task in an automated manner.

[1]  Swapan Das,et al.  Correlation of Fractographic Features with Mechanical Properties in Systematically Varied Microstructures of Cu-Strengthened High-Strength Low-Alloy Steel , 2009 .

[2]  Arpan Das,et al.  Correspondence of fracture surface features with mechanical properties in 304LN stainless steel , 2008 .

[3]  H. Miura,et al.  Deformation behavior of carbon steel with dispersed fine voids at elevated temperatures , 2008 .

[4]  A. Abdollah-zadeh,et al.  The effect of tempering temperature on the mechanical properties and fracture morphology of a NiCrMoV steel , 2008 .

[5]  Chi Feng Lin,et al.  Deformation and failure response of 304L stainless steel SMAW joint under dynamic shear loading , 2004 .

[6]  Jacques Besson,et al.  Anisotropic ductile fracture: Part I: experiments , 2004 .

[7]  Yonggang Huang,et al.  The modified Gurson model accounting for the void size effect , 2004 .

[8]  Peter Matic,et al.  Modeling void coalescence during ductile fracture of a steel , 2004 .

[9]  D. Chae,et al.  Damage accumulation and failure of HSLA-100 steel , 2004 .

[10]  C. J. Young,et al.  Specimen size effects and ductile fracture of HY-100 steel , 2002 .

[11]  D. Koss,et al.  Temperature, strain rate, stress state and the failure of HY-100 steel , 2001 .

[12]  M. Horstemeyer,et al.  High temperature sensitivity of notched AISI 304L stainless steel tests , 1998 .

[13]  H. Rack,et al.  Thermomechanical treatment of high purity 6061 aluminum , 1977 .

[14]  A. Argon,et al.  Separation of second phase particles in spheroidized 1045 steel, Cu-0.6pct Cr alloy, and maraging steel in plastic straining , 1975 .

[15]  J. Gurland,et al.  Metallographic characterization of fracture surface profiles on sectioning planes , 1974 .