Abstract
In this study, digital image correlation is employed to analyze the displacement field around edge V-notches in a polymethyl methacrylate (PMMA) sample with and without tip cracks. First stress intensity factor (SIF) is obtained by substituting experimental displacement field data in the series expansion of the Williams approach and solving the corresponding least squares problem. To study the effects of geometric parameters on the calculated SIF, various opening angles and depths of V-notch are considered for different tip crack length values. Convergence behavior of the results is studied by examining the influence of minimum radius of the data-points extraction region and the number of terms considered in the Williams expansion. It is demonstrated that the results converge after considering two or three terms of the series depending on the value of V-notch opening angle. Also, it is shown that the presence of tip cracks increases the minimum required radius of the data extraction zone.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
